Chesapeake Bay Program A Watershed Partnership United States Region III Monitoring and Tidal Monitoring EPA 903-R-05-004 Environmental Chesapeake Bay Analysis and Analysis CBP/TRS 278-06 Protection Agency Program Office Subcommittee Workgroup December 2005 Chesapeake Bay Program Analytical Segmentation Scheme Revisions, Decisions and Rationales 1983-2003 2005 Addendum December 2005 ------- Chesapeake Bay Program Analytical Segmentation Scheme Revisions, Decisions and Rationales 1983-2003 2005 Addendum Prepared by the Chesapeake Bay Program Monitoring and Analysis Subcommittee Tidal Monitoring and Analysis Workgroup Annapolis, Maryland December 2005 ------- ------- Contents Introduction 1 Methods Used to Subdivide Segments and Split Segments by Jurisdiction 2 Web Access to Segmentation by Jurisdiction 4 Literature Cited 4 Appendix B Maryland's and Virginia's Chesapeake Bay Program Split Segments Boundary Delineations by Jurisdiction 5 Appendix C 2003 Chesapeake Bay Program Segmentation Scheme Coordinates Geo-reference and Narrative Descriptions by Jurisdiction 11 Contents ------- ------- INTRODUCTION In October 2004, the Chesapeake Bay Program released Chesapeake Bay Program Analytical Segmentation Scheme: Revisions, Decisions, and Rationales 1983-2003 (U.S. Environmental Protection Agency 2004). The Segmentation Scheme Report provided documentation on the development of the spatial segmentation scheme of the Chesapeake Bay and tidal tributaries over the period from 1983 to 2003. Included within the Segmentation Scheme Report were tables describing the segment boundaries and split segment boundaries. Segments have been defined as a way of grouping areas with similar natural charac- teristics. To date, segment boundaries have been defined based on selected ecological criteria. As a result, management and monitoring strategies can be defined for each segment as a whole. Additional information on the rationale for utilizing natural characteristics for delineating segments can be found in the Segmentation Scheme Report. It has become increasingly apparent that the political jurisdictions charged with adopting water quality standards and developing management strategies for waters within their jurisdiction need well defined boundaries for the segments that lie within their authority. The 2003 revisions to the Chesapeake Bay Program segmentation scheme included multiple segments and split segments that crossed jurisdictional boundaries. This has led to some confusion as to the area within segments that are under the jurisdiction of the individual states and the District of Columbia. In an effort to address this concern, the Chesapeake Bay Program has revised the descrip- tions contained within the Segmentation Scheme to more fully reflect jurisdictional boundaries. The purpose of this addendum is to provide an updated description of segments and split segments by jurisdiction. Each segment or split segment definition contains a series of points that are defined by both a set of latitude and longitude coordinates in decimal degrees and a textual narrative describing their location. The segment boundaries follow the shorelines between the geo-referenced boundary coordinates including within each segment, all tidally influenced waters. In the original Segmentation Scheme Report, the segment and split segment descrip- tions were presented in Appendix B (split segments) and Appendix C (segments). For purposes of this Addendum, the updated segment descriptions are presented here as revisions to those appendices. Appendix A of the original Segmentation Scheme remains unchanged and therefore is not replicated here. Introduction ------- METHODS USED TO SUBDIVIDE SEGMENTS AND SPLIT SEGMENTS BY JURISDICTION Originally, the impetus to divide certain Chesapeake Bay Program segments came from the desire of Maryland, Virginia and the District of Columbia to adopt submerged aquatic vegetation (SAV) restoration acreages in their respective water quality standards regulations for the tidal Potomac River. Each Chesapeake Bay Program segment was allocated acreage-specific SAV restoration goals, but the juris- dictions wanted to know what portions of those segments were legally responsible for. To allocate the area of individual Chesapeake Bay Program segments shared by two or more jurisdictions to the appropriate jurisdiction, it became necessary to apply state and District boundary data to be able to subdivide those segments. However, there were no legally recognized boundary data for the tidal Potomac River or even one common boundary dataset that all of the jurisdictions were using. An attempt was made to create a jurisdictional boundary file for the tidal Potomac River that Maryland, Virginia and the District of Columbia could agree upon. After examining several different digital boundary files, it was determined that the best boundary along the Virginia shoreline was one produced by the Virginia Depart- ment of Conservation and Recreation (VA DCR). The VA DCR boundary was mostly based on the state boundaries appearing on digital 1:24000 scale quad sheets (digital raster graphics, or DRGs). The Maryland-Virginia state boundary delineated on the quad sheets appears to be based on the Mathews-Nelson Survey of 1927, which used the legally defined boundary of the low-water mark on the Virginia side of the river, except where embayments were crossed from one point on land to another point on land. However, shorelines can change in almost 80 years, either through natural or anthropogenic influences, which may partially account for discrepancies between the legal definition of the boundaries and how the data appear today. The state boundary was digitized on-screen using the DRGs as a background upon which to trace the line work. In the lower Potomac River, DCR used 1:12000 scale digital orthophoto quarter quads (DOQQs) having photo dates of 1992-1996 as the source for the boundary definition. Maps of the state boundary along the Potomac River are included in Technical Support Document for Identification of Chesapeake Bay Designated Uses and Attainability: 2004 Addendum (U.S. Envi- ronmental Protection Agency 2004b). For the Maryland-District of Columbia boundary lines that cross the Potomac River diagonally from the Virginia shoreline, data provided by the District of Columbia Department of Health's Water Quality Control Branch were used. These data and the VA DCR data were merged to create a boundary file that all three jurisdictions agreed to use in allocating SAV restoration goals in those shared segments. Later, it was determined that all segments that crossed jurisdictional boundaries needed to be subdivided. This included the continuation of the Maryland-Virginia boundary across the Chesapeake Bay and partly up the tidal Pocomoke River, and Methods Used to Divide Segments and Split Segments by Jurisdiction ------- the two tidal tributaries—C & D Canal and Nanticoke River—that straddled the Maryland-Delaware boundary. The Maryland-Virginia state boundary from VA DCR extended across the Chesa- peake Bay and up the tidal Pocomoke River. This boundary was used with slight modification of some of the vertices of the boundary in Pocomoke Sound that subdi- vided segments POCMH and POCOH. Maryland Department of the Environment provided coordinates of a series of navigational buoys that define the Maryland- Virginia state boundary at those vertices. The original VA DCR boundary data were altered to reflect these navigational buoy locations. The differences in distance between the navigational buoy locations and the vertices in the VA DCR data were all less than 30 meters, most less than 10 meters. For the Maryland-Delaware boundary, Maptech 1:24,000 scale DRGs were used to digitize the boundary line on-screen. The GIS coverage was then edited and the two affected segments were split by the state boundary. Those Chesapeake Bay Program segments that encompass multiple jurisdictions are: Segment Name C&D Canal Upper Nanticoke River Anacostia Upper Potomac River Middle Potomac River Lower Potomac River Lower Central Chesapeake Tangier Sound Lower Pocomoke River Middle Pocomoke River Segment Effected Descriptor C&DOH NANTF ANATF POTTF POTOH POTMH CB5MH TANMH POCMH POCOH Jurisdictions (DE, MD) (DE, MD) (DC, MD) (DC, MD, VA) (MD, VA) (MD, VA) (MD, VA) (MD, VA) (MD, VA) (MD, VA) The Chesapeake Bay Program split segments were created to aid Maryland and Virginia in their adoption of SAV restoration acreages and water quality standards (U.S. Environmental Protection Agency 2004b). Two of the segments that were split for this purpose (POTOH and TANMH) share both Maryland and Virginia waters. Since the two segments were split by request of Maryland Department of the Envi- ronment for Maryland attainment, only the Maryland portion of those segments was required. The state boundary data that was used to subdivide all shared segments by jurisdiction was also used to subdivide the split segments POTOH 1 and TANMH 1. Only the Maryland portion of these split segments was retained in the data set. Methods Used to Divide Segments and Split Segments by Jurisdiction ------- WEB ACCESS TO SEGMENTATION SCHEMES The Chesapeake Bay Program partners maintain web access to the past and present segmentation schemes at www.chesapeakebay.net. Segment maps and a map of cur- rent monitoring stations can be found under Maps and Mapping at this website. Segment maps and monitoring maps are available in GIS format at: ftp://ftp.chesapeakebay.net/pub/Geographic/Chesapeake Bay. The appendices contained in this addendum are available as an EXCEL file at: www.chesapeakebay.net/segmentscheme.htm. LITERATURE CITED U.S. Environmental Protection Agency. 2004a. Chesapeake Bay Program Analytical Segmentation Scheme: Revisions, Decisions and Rationale 1983-2003. EPA 903-R- 04-008. CBP/TRS 268/04. Chesapeake Bay Program Office, Annapolis, Maryland. U.S. Environmental Protection Agency. 2004b. Technical Support Document for Identification of Chesapeake Bay Designated Uses and Attainability. EPA 903-R-04- 006. Chesapeake Bay Program Office, Annapolis, Maryland. Web Access to Segmentation Schemes / Literature Cited ------- appendix b> Maryland's and Virginia's Chesapeake Bay Program Split Segments Boundary Delineations by Jurisdiction Table B-1. Latitude/longitude and narrative geo-reference identifiers for the end coordinates bounding each of Maryland's and Virginia's split Chesapeake Bay Program segments. Segment Description Chesapeake Bay Program Segment Split Segment Number of Latitude/ Longitude Coordinates to Follow MARYLAND SPLIT SEGMENTS Northern Chesapeake 39.420143 -76.123344 -76.035194 -75.997681 -76.007698 -76.010475 -76.072807 39.401688 39.429420 39.449200 39.449471 39.475323 39.476006 39.475132 39.475132 39.476006 39.475323 39.449471 39.529629 39.540794 39.608994 39.608959 39.609001 39.608971 Gunpowder River 39.316414 39.312862 39.312767 39.303204 39.356564 39.358330 39.326569 39.326477 -76.094421 -76.097580 -76.097580 -76.094421 -76.072807 -76.010475 -75.979271 -76.002899 -76.121094 -76.132683 -76.135147 -76.143379 -76.331039 -76.321449 -76.321190 -76.296249 -76.322929 -76.345024 -76.361801 -76.361130 CB1TF CB1TF1 8 1000 feet southwest of Cherry Tree Point, Aberdeen Proving Ground North of Chesapeake Haven, Grove Neck 1300 feet southwest of Wroth Point Turkey Point Turkey Point, 0.1 miles west southwest of lighthouse Locust Point on Spesutie Island East side of Spesutie Narrows bridge West side of Spesutie Narrows bridge CB1TF2 10 West side of Spesutie Narrows bridge East side of Spesutie Narrows bridge Locust Point on Spesutie Island Turkey Point, 0.1 miles west southwest of lighthouse Red Point East side of Carpenter Point Port Deposit East side Spencer Island West side Spencer Island Just south of Rock Run on western shore GUNOH GUNOH1 8 Carroll Island, midway between White Oak and Carroll Points Carroll Point Carroll Point Rickett Point at end of Ricketts Point Road Maxwell Point Cunninghill Cove, mouth of unnamed creek 170 feet south of west side of bridge to Carroll Island 170 feet south of east side of bridge to Carroll Island appendix b • Maryland's and Virginia's CBP Split Segments Boundary Delineations ------- Segment Description Chesapeake Bay Program Segment Split Segment Number of Latitude/ Longitude Coordinates to Follow 39.358330 39.356564 39.412685 -76.345024 -76.322929 -76.400780 Lower Patuxent River GUNOH2 Cunninghill Cove, mouth of unnamed creek Maxwell Point Gunpowder Falls, 1500 feet below Route 7 PAXMH1 3 12 38.304638 38.319176 38.322941 38.321041 38.386593 38.389153 38.412220 38.411896 38.481140 38.475594 38.342590 38.339634 38.475594 38.481140 38.540684 38.542320 38.321041 38.322941 38.339634 38.342590 38.389153 38.386593 38.446831 38.411896 38.412220 38.433407 -76.421448 -76.420990 -76.451630 -76.451965 -76.498840 -76.506416 -76.542747 -76.544487 -76.647560 -76.662788 -76.500587 -76.499550 -76.662788 -76.647560 -76.668045 -76.678818 -76.451965 -76.451630 -76.499550 -76.500587 -76.506416 -76.498840 -76.492088 -76.544487 -76.542747 -76.540894 PAXMH Fishing Point Drum Point Point of land south of Ship Point and east of Ma Leg Island Eastern tip of Solomons Island Mouth of St. Leonard Creek, east side Petersons Point Island Creek mouth, east side Island Creek mouth, Broomes Island side 0.64 miles south of Sandy Point near Buzzard Island Trent Hall Point Mouth of Cuckold Creek, north side Mouth of Cuckold Creek, south side PAXMH2 4 Trent Hall Point 0.64 miles south of Sandy Point near Buzzard Island Gods Grace Point near end of Leitchs Wharf Road Chalk Point, eastern side PAXMH3 2 Eastern tip of Solomons Point of land south of Ship Point and east of Ma Leg Island PAXMH4 2 Mouth of Cuckold Creek, south side Mouth of Cuckold Creek, north side PAXMH5 3 Petersons Point Mouth of St. Leonard Creek, east side 0.25 miles downstream of Parran Road PAXMH6 3 Island Creek mouth, Broomes Island Side Island Creek mouth, east side 0.7 miles north of point where Marshall Road ends Middle Potomac River 38.389680 -77.029268 POTOH POTOH1 8 MLW 1 mile southeast of Mathias Point, just north of Route 639 38.407509 -76.997322 0.65 miles northwest of the town of Popes Creek 38.444935 -77.016396 1.5 miles southeast of Chapel Point, due east of Windmill Point 38.444565 -77.040695 Windmill Point 38.408894 -77.110886 Blossom Point 38.408745 -77.124855 0.15 miles southwest of Benny Gray Point 38.523266 -77.256630 1000 feet southwest of Moss Point 38.524168 -77.284864 MLW midway between Shipping Point and Quantico Pier Following the MLW line which defines the Maryland/Virginia boundary to the first point described above, except for the following embayments where the boundary is the confluence of the mouth of the embayment with the Potomac River: Unnamed Embayment (Chopawamsic Island) Unnamed Embayment (near Arkendale Road) Aquia Creek Potomac Creek appendix b • Maryland's and Virginia's CBP Split Segments Boundary Delineations ------- Segment Description 38.444565 38.444935 38.500164 38.408745 38.408894 38.475391 Elk River 39.449200 39.429420 39.474773 39.486473 39.523182 39.525536 39.544392 39.545540 39.545540 39.544392 39.607624 Sassafras River 39.389511 39.372025 39.371868 39.378330 39.378330 39.371868 39.376785 Tangier Sound 37.941404 37.953599 37.953392 37.946050 37.906718 37.911304 37.911789 37.924927 38.015781 38.016033 38.020733 38.020973 38.036049 38.058910 38.064907 38.065315 38.075314 38.075665 38.078552 38.122917 38.125946 38.131565 38.136566 38.232738 -77.040695 -77.016396 -77.026306 -77.124855 -77.110886 -77.130676 -76.007698 -75.997681 -75.940498 -75.923767 -75.871521 -75.874619 -75.855301 -75.876144 -75.876144 -75.855301 -75.822853 -76.040848 -76.101227 -75.955750 -75.961472 -75.961472 -75.955750 -75.806549 -76.083908 -76.052055 -75.993331 -75.943628 -75.952630 -75.883558 -75.837732 -75.848007 -75.845947 -75.846458 -75.856712 -75.856819 -75.868935 -75.868744 -75.866974 -75.866608 -75.870750 -75.871155 -75.877586 -75.937126 -75.941216 -75.948860 -75.959633 -75.972618 Chesapeake Number of Latitude/ Bay Program Split Longitude Coordinates Segment Segment to Follow POTOH2 3 Windmill Point 1 .5 miles southeast of Chapel Point, due east of Windmill Point Port Tobacco Marina (edge of 7.5' quad sheet) POTOH3 3 0.15 miles southwest of Benny Gray Point Blossom Point Wards Run, 0.25 miles upstream of Hill Top Fork ELKOH ELKOH1 8 Turkey Point 1300 feet southwest of Wroth Point East of Ford Landing on Veazey Neck Town Point West of where the road north from Randalia ends East side of Welch Point Paddy Biddle Cove 0.6 miles south of Elkmore ELKOH2 3 0.6 miles south of Elkmore Paddy Biddle Cove Elkton, 500 feet below Route 7 SASOH SASOH1 4 Grove Point 2850 feet east of Howells Point 0.66 miles northwest of Freeman Creek Cassidy Wharf SASOH2 3 Cassidy Wharf 0.66 miles northwest of Freeman Creek 350 feet upstream of Route 301 TANMH TANMH1 28 MD/VA boundary, 2.25 miles west of Smith Gut Point MD/VA boundary, 1450 feet west of Hog Neck MD/VA boundary, 400 feet east of Horse Hammock MD/VA boundary, between Smith and Cedar Island MD/VA boundary, 2.75 miles west of Clump Island MD/VA boundary, 300 feet north of Green Harbor Island MD/VA boundary, 1.15 miles south of Cow Gap Island Eastward Point, on eastern side of Broad Creek East side of Daugherty Creek Canal West side of Daugherty Creek Canal South side of gut southwest of Acre Creek North side of gut southwest of Acre Creek 700 feet east of Flatcap Point, Janes Island South shore of Pat Island NE Pat Island- across gut from Hazard Island Hazard Island- across gut from Pat Island Gut between Hazard Cove and Mine Cr.- south side Gut between Hazard Cove and Mine Cr.- north side Hazard Island- 1200 feet northeast of tip of Hazard Pt. Eastern side of Little Deal Island Eastern point on north side of Little Deal Island Wenona on Deal Island, north of channel Twiggs Point Southern-most point of Clay Island appendix b • Maryland's and Virginia's CBP Split Segments Boundary Delineations ------- Segment Description 38.216042 38.215809 38.231964 38.231445 38.232738 38.136566 38.160080 38.160442 38.202679 38.227970 38.243217 38.244740 Manokin River 38.131565 38.125946 38.122917 38.078552 38.075665 38.075314 38.069160 38.069599 38.073784 38.074146 38.133823 38.142979 38.160442 38.160080 38.142979 38.133823 38.172668 Big Annemessex 38.058910 38.036049 38.020973 38.020733 38.016033 38.015781 38.078850 38.074585 38.074146 38.073784 38.069599 38.069160 38.065315 38.064907 38.074585 38.078850 38.087246 -76.032051 -76.032349 -76.134285 -76.135773 -75.972618 -75.959633 -75.932388 -75.929558 -75.890579 -75.893486 -75.906105 -75.941284 -75.948860 -75.941216 -75.937126 -75.877586 -75.871155 -75.870750 -75.855591 -75.853897 -75.848656 -75.848228 -75.827339 -75.821144 -75.929558 -75.932388 -75.821144 -75.827339 -75.732979 River -75.868744 -75.868935 -75.856819 -75.856712 -75.846458 -75.845947 -75.782249 -75.787170 -75.848228 -75.848656 -75.853897 -75.855591 -75.866608 -75.866974 -75.787170 -75.782249 -75.733032 Chesapeake Number of Latitude/ Bay Program Split Longitude Coordinates Segment Segment to Follow Bishops Head Point Bishops Head Point Lower Hooper Island between Nancys and Creek Points Lower Hooper Island between Nancys and Creek Points TANMH2 8 Southern-most point of Clay Island Twiggs Point Upper Thorofare, Deal Island side Upper Thorofare at the mouth of Moores Gut 1 100 feet west of the tip of Long Point Nanticoke Point (Stump Point Marsh) West of Waterview, north of Jones Creek Sandy Island, northeast of Frog Point MANMH MANMH1 14 Wenona on Deal Island, north of channel Eastern point on north side of Little Deal Island Eastern side of Little Deal Island Hazard Island, 1200 feet northeast of tip of Hazard Point Gut between Hazard Cove and Mine Creek, north side Gut between Hazard Cove and Mine Creek, south side West part Hazard Island at Shirtpond Cove East part Hazard Island at Shirtpond Cove West side of gut heading north from Flatland Cove East side of gut heading north from Flatland Cove Cormal Point Champ Point Upper Thorofare at the mouth of Moores Gut Upper Thorofare, Deal Island side MANMH2 3 Champ Point Cormal Point Manokin River confluence with Hall Branch BIGMH BIGMH1 14 South shore of Pat Island 700 feet east of Flatcap Point, Janes Island North side of gut southwest of Acre Creek South side of gut southwest of Acre Creek West side of Daugherty Creek Canal East side of Daugherty Creek Canal Persimmon Point Charles Point East side of gut heading north from Flatland Cove West side of gut heading north from Flatland Cove East part Hazard Island at Shirtpond Cove West part Hazard Island at Shirtpond Cove Hazard Island, across gut from Pat Island Northeast Pat Island, across gut from Hazard Island BIGMH2 3 Charles Point Persimmon Point 1000 feet below confluence with Annemesex Creek appendix b • Maryland's and Virginia's CBP Split Segments Boundary Delineations ------- Segment Description Chesapeake Bay Program Segment Split Segment Number of Latitude/ Longitude Coordinates to Follow VIRGINIA SPLIT SEGMENTS Upper James River 37.227379 -76.946426 37.241180 -76.945686 37.332580 -77.267880 37.334998 -77.274640 37.329826 -77.281128 37.317638 -77.277275 37.334998 37.332580 37.533394 -77.274640 -77.267880 -77.436775 JMSTF JMSTF1 6 0.3 miles downstream of Sloop Point Tettington, 500 feet downstream of road to the river Most western point of Eppes Island South of Bermuda Hundred, west of substation Mouth of small creek east of Shand Creek and north of light City Point, Hopewell JMSTF2 3 South of Bermuda Hundred, west of substation Most western point of Eppes Island Upstream of Mayos Bridge, as far as Browns Island dam appendix b • Maryland's and Virginia's CBP Split Segments Boundary Delineations ------- ------- 11 appendix 2003 Chesapeake Bay Program Segmentation Scheme Coordinates Geo-reference and Narrative Descriptions by Jurisdiction Table C-1. Textual description of coordinates bounding the 2003 Chesapeake Bay Program Segmentation Scheme segments by jurisdiction. Segment Description Chesapeake Bay Program Segment Number of Latitude/ Longitude Coordinates to Follow MARYLAND SEGMENT BOUNDARIES Northern Chesapeake Bay 39.420143 39.401688 39.429420 39.4492 39.529629 39.540794 39.608994 39.608959 39.609001 39.608971 Bush River 39.339172 39.351715 39.482510 Gunpowder River 39.316414 39.312862 39.312767 39.303204 39.412685 39.326569 39.326477 Middle River 39.286442 39.309422 39.326477 39.326569 39.329792 -76.123344 -76.035194 -75.997681 -76.007698 -75.979271 -76.002899 -76.121094 -76.132683 -76.135147 -76.143379 -76.256592 -76.232986 -76.215805 -76.331039 -76.321449 -76.321190 -76.296249 -76.400780 -76.361801 -76.361130 -76.384102 -76.342964 -76.361130 -76.361801 -76.446922 CB1TF 10 1000 feet southwest of Cherry Tree Point, Aberdeen Proving Ground North of Chesapeake Haven, Grove Neck 1300 feet southwest of Wroth Point Turkey Point Red Point East side of Carpenter Point Port Deposit East side Spencer Island West side Spencer Island Just south of Rock Run on western shore BSHOH 3 800 feet upriver of Leges Point Mouth of Abbey Creek Church Creek, at the railroad tracks GUNOH 7 Carroll Island, midway between White Oak and Carroll Points Carroll Point Carroll Point Rickett Point at end of Ricketts Point Road Gunpowder Falls, 1500 feet below Route 7 170 feet south of west side of bridge to Carroll Island 170 feet south of east side of bridge to Carroll Island MIDOH 5 North shore of Holly Beach Carroll Island, between Weir Point and Hawthorn Cove 170 feet south of east side of bridge to Carroll Island 170 feet south of west side of bridge to Carroll Island 150 feet downstream of railroad tracks, above Eastern Blvd appendix c • 2003 CBP Segmentation Scheme Coordinates Geo-reference and Narrative Descriptions ------- 12 Segment Description Upper Chesapeake 39.225143 39.207447 39.372025 39.389511 39.401688 39.420143 39.351715 39.339172 39.303204 39.312767 39.312862 39.316414 39.309422 39.286442 39.248951 39.231178 Back River 39.231178 39.248951 39.307873 Patapsco River 39.131855 39.195377 39.275375 Magothy River 39.039185 39.074715 39.114807 Bay -76.408775 -76.246994 -76.101227 -76.040848 -76.035194 -76.123344 -76.232986 -76.256592 -76.296249 -76.321190 -76.321449 -76.331039 -76.342964 -76.384102 -76.410530 -76.408920 -76.408920 -76.410530 -76.520416 -76.435081 -76.444511 -76.654480 -76.414330 -76.422539 -76.548195 Upper Central Chesapeake 38.995991 -76.413185 38.989105 39.016422 39.029720 39.054563 39.056882 39.207447 39.225143 39.195377 39.131855 39.074715 39.039185 Severn River 38.946095 38.976032 39.079697 South River 38.888672 38.886829 38.907860 38.983105 -76.330185 -76.296959 -76.242516 -76.220229 -76.220903 -76.246994 -76.408775 -76.444511 -76.435081 -76.422539 -76.414330 -76.455879 -76.452377 -76.623398 -76.489876 -76.475616 -76.466240 -76.606232 Chesapeake Number of Latitude/ Bay Program Longitude Coordinates Segment to Follow CB2OH 16 North Point State Park, Black Marsh, 1200 feet northeast of small creek 3000 feet south of Route 21 (Tolchester Beach Road) 2850 feet east of Howells Point Grove Point North of Chesapeake Haven, Grove Neck 1000 feet southwest of Cherry Tree Point, Aberdeen Proving Ground Mouth of Abbey Creek 800 feet upriver of Leges Point Rickett Point at end of Ricketts Point Road Carroll Point Carroll Point Carroll Island, midway between White Oak and Carroll Points Carroll Island, between Weir Point and Hawthorn Cove North shore of Holly Beach Rocky Point Park, between Claybank and Cedar Points Swan Point, in line with llth Street BACOH 3 Swan Point, in line with llth Street Rocky Point Park, between Claybank and Cedar Points Moores Run, 1.25 miles above 1-695 PATMH 3 Bodkin Neck between Cedar and Bodkin Points North Point south of Fort Howard Gwynns Falls, upstream end of Carroll Park MAGMH 3 Between Beacon Hill and Tydings on the Bay East side Gibson Island across from Hapenny Way End of estuary below Catherine Avenue. CB3MH 12 500 feet southeast of Moss Pond 0.6 miles northeast of where Route 50 west meets the Bay Kent Island, 1600 feet north of Grollman Road Wickes Beach, Eastern Neck Island Northern tip of Eastern Neck Island, east of Route 445 bridge South end of Eastern Neck, east of Route 445 bridge 3000 feet south of Route 21 (Tolchester Beach Road) North Point State Park, Black Marsh, 1200 feet northeast of small creek North Point south of Fort Howard Bodkin Neck between Cedar and Bodkin Points East side Gibson Island across from Hapenny Way Between Beacon Hill and Tydings on the Bay SEVMH 3 Bay Ridge, near Bainbridge Avenue Greenbury Point, 800 feet up east side from the tip Severn Run, 1100 feet downstream of Veterans Hwy SOUMH 4 Saunders Point, south of Mayo Beach Park 0.8 miles east of Saunders Point Southern shore of Thomas Point Park 700 feet upstream of Route 50 appendix c • 2003 CBP Segmentation Scheme Coordinates Geo-reference and Narrative Descriptions ------- 13 Segment Description Rhode River 38.867775 38.864788 38.886829 38.888672 38.883629 West River 38.848892 38.864788 38.867775 38.822258 Middle Central 38.384819 38.393951 38.421051 38.421944 38.487057 38.526997 38.527523 38.672421 38.719185 38.719967 38.752529 38.836365 38.989105 38.995991 38.976032 38.946095 38.907860 38.848892 Chesapeake Number of Latitude/ Bay Program Longitude Coordinates Segment to Follow -76.519608 -76.485870 -76.475616 -76.489876 -76.554649 -76.493805 -76.485870 -76.519608 -76.551514 Chesapeake Bay -76.381432 -76.282532 -76.288589 -76.288742 -76.331779 -76.333771 -76.333801 -76.340698 -76.334084 -76.333054 -76.340332 -76.369392 -76.330185 -76.413185 -76.452377 -76.455879 -76.466240 -76.493805 RHDMH 5 Salt Pond at the mouth of the Rhode River 1.2 miles east southeast of Dutchman Point 0.8 miles east of Saunders Point Saunders Point, south of Mayo Beach Park Muddy Creek, 1200 feet below North and South Forks converge WSTMH 4 Felicity Cove, 250 feet north of Bay Road 1.2 miles east southeast of Dutchman Point Salt Pond at the mouth of the Rhode River 2400 feet downstream of Shady Side CB4MH 18 Cove Point Meekins Neck, 800 feet north of Cattail Island Meekins Neck, across channel from Point #4 Southern tip of Taylors Island West side of Oyster Cove, Taylors Island 190 feet south of LCHMH Point #3 East edge of tidal flat north of existing James Island 720 feet along shore north northwest of Blackwalnut Point South side Knapps Narrows, 275 feet west of Route 33 North side Knapps Narrows, 150 feet west of Route 33 1500 feet northeast of Green Marsh Point Kent Point 0.6 miles northeast of where Route 50 west meets the Bay 500 feet southeast of Moss Pond Greenbury Point, 800 feet up east side from the tip Bay Ridge, near Bainbridge Avenue Southern shore of Thomas Point Park Felicity Cove, 250 feet north of Bay Road Western Branch Patuxent River 38.784637 -76.713326 38.785023 -76.712456 38.797241 -76.729507 Upper Patuxent River 38.700325 -76.695824 38.700516 -76.694160 38.874958 -76.677834 38.785023 -76.712456 38.784637 -76.713326 Middle Patuxent River 38.542320 -76.678818 38.540684 -76.668045 38.700516 -76.694160 38.700325 -76.695824 Lower Patuxent River 38.304638 -76.421448 38.319176 -76.420990 38.540684 -76.668045 38.542320 -76.678818 WBRTF 3 Mouth of Western Branch, west side Mouth of Western Branch, east side Where Western Branch narrows, north of sewage plant PAXTF 5 On marshy point 0.5 miles north of Hotschkins Branch 0.8 miles north of Jones Point Near unnamed stream south of Mt. Nebo Branch Mouth of Western Branch, east side Mouth of Western Branch, west side PAXOH 4 Chalk Point, eastern side Gods Grace Point near end of Leitchs Wharf Road 0.8 miles north of Jones Point On marshy point 0.5 miles north of Hotschkins Branch PAXMH 4 Fishing Point Drum Point Gods Grace Point near end of Leitchs Wharf Road Chalk Point, eastern side appendix c • 2003 CBP Segmentation Scheme Coordinates Geo-reference and Narrative Descriptions ------- 14 Segment Description Lower Central 37.889451 37.885680 37.941404 38.051910 38.231445 38.248581 38.248642 38.295982 38.298965 38.348228 38.349953 38.393951 38.384819 38.319176 38.304638 38.038605 37.909725 Chesapeake Bay -76.236198 -76.229038 -76.083908 -76.128838 -76.135773 -76.153191 -76.154419 -76.204597 -76.206718 -76.227264 -76.227982 -76.282532 -76.381432 -76.420990 _76.421448 -76.321442 -76.263702 Anacostia River 38.918850 38.918261 38.938805 -76.941951 -76.941198 -76.942162 Upper Potomac River 38.524168 38.523266 38.554722 38.566856 38.702038 38.711002 38.809449 38.805753 38.802464 38.791836 -77.284864 -77.256630 -77.220268 -77.209755 -77.044693 -77.036736 -77.016184 -77.020951 -77.025166 -77.038923 Chesapeake Number of Latitude/ Bay Program Longitude Coordinates Segment to Follow CB5MH 17 Smith Point. MD/VA boundary, 2500 feet southwest of Smith Point MD/VA boundary, 2.25 miles west of Smith Gut Point 7000 feet north and 2500 feet west of Fog Point, Smith Island Lower Hooper Island between Nancys and Creek Points. Lower Hooper Island, northeast end of The Thorofare Middle Hooper Island, northwest end of The Thorofare Northwest tip of Middle Hooper Island across from Ferry Point Ferry Point Drawbridge, northern Upper Hooper Island Drawbridge, southern Meekins Neck Meekins Neck, 800 feet north of Cattail Island Cove Point Drum Point Fishing Point Point Lookout East of Ophelia, 300 feet northwest of light ANATF 3 MD/DC boundary, western shore MD/DC boundary, eastern side of Route 50 bridge 100 feet below Bladensburg Road bridge POTTF 10 MLW midway between Shipping Point and Quantico Pier 1000 feet southwest of Moss Point Stump Neck, east of radio towers and west of Roach Road Cornwallis Neck, 0.25 miles northwest of Deep Point Mockley Point, 500 feet west of tip West of Fort Washington DC/MD boundary, northern shore of Oxon Creek DC/MD boundary, southern shore of Oxon Creek DC/MD boundary, near Fox Ferry Point DC/MD/VA boundary 200 feet east of Jones Point Park Following the MLW line which defines the Maryland/Virginia boundary to the first point described above, except for the following embayments where the boundary is the confluence of the mouth of the embayment with the Potomac River: Hunting Creek Unnamed embayment (Mason Neck NWR) Little Hunting Creek Occoquan Bay Dogue Creek Powells Creek Gunston Cove Quantico Creek Piscataway River 38.711002 38.702038 38.697979 -77.036736 -77.044693 -76.996788 Mattawoman Creek 38.566856 -77.209755 38.554722 -77.220268 38.591194 -77.124672 PISTF 3 West of Fort Washington Mockley Point, 500 feet west of tip Piscataway Creek Park, north of sewage disposal plant MATTF 3 Cornwallis Neck, 0.25 miles northwest of Deep Point Stump Neck, east of radio towers and west of Roach Road 2300 feet downstream of Routes 224/225 (7.5' quad edge) appendix c • 2003 CBP Segmentation Scheme Coordinates Geo-reference and Narrative Descriptions ------- Segment Description 15 Chesapeake Bay Program Segment Number of Latitude/ Longitude Coordinates to Follow Middle Potomac River 38.389680 -77.029268 38.407509 -76.997322 38.523266 -77.256630 38.524168 -77.284864 POTOH 4 MLW 1 mile southeast of Mathias Point, just north of Route 639 0.65 miles northwest of the town of Popes Creek 1000 feet southwest of Moss Point MLW midway between Shipping Point and Quantico Pier Following the MLW line which defines the Maryland/Virginia boundary to the first point described above, except for the following embayments where the boundary is the confluence of the mouth of the embayment with the Potomac River: Unnamed Embayment (Chopawamsic Island) Unnamed Embayment (near Arkendale Road) Aquia Creek Potomac Creek Lower Potomac River 37.909777 -76.263700 38.038605 -76.321442 38.407509 -76.997322 38.389680 -77.029268 POTMH 4 MLW east of Ophelia, 300 feet northwest of light Point Lookout 0.65 miles northwest of the town of Popes Creek MLW 1 mile southeast of Mathias Point, just north of Route 639 Following the MLW line which defines the Maryland/Virginia boundary to the first point described above, except for the following embayments where the boundary is the confluence of the mouth of the embayment with the Potomac River: Upper Machodoc Creek Rosier Creek Monroe Bay Mattox Creek Popes Creek Nomini Bay Lower Machodoc Creek Unnamed Embayment (south of Ragged Point) Northeast River 39.540794 39.529629 39.608879 Elk River 39.449200 39.429420 39.474773 39.486473 39.523182 39.525536 39.607624 -76.002899 -75.979271 -75.937988 -76.007698 -75.997681 -75.940498 -75.923767 -75.871521 -75.874619 -75.822853 Gardner Creek Jackson Creek Bonum Creek Yeocomico River Coan River Presley Creek Hull Creek Hock Creek 3 NORTF East side of Carpenter Point Red Point 750 feet above railroad bridge, 1500 feet below Route 40 ELKOH 7 Turkey Point 1300 feet southwest of Wroth Point East of Ford Landing on Veazey Neck Town Point West of where the road north from Randalia ends East side of Welch Point Elkton, 500 feet below Route 7 C&D Canal 39.525536 39.523182 39.534616 39.536623 -75.874619 -75.871521 -75.779424 -75.779582 C&DOH East side of Welch Point West of where the road north from Randalia ends MD/DE state line, southern shore MD/DE state line, northern shore Bohemia River BOHOH 39.486473 -75.923767 Town Point 39.474773 -75.940498 East of Ford Landing on Veazey Neck 39.461319 -75.783554 600 feet below entrance of Sandy Branch appendix c • 2003 CBP Segmentation Scheme Coordinates Geo-reference and Narrative Descriptions ------- 16 Segment Description Sassafras River 39.389511 39.372025 39.376785 -76.040848 -76.101227 -75.806549 Chesapeake Bay Program Segment SASOH Grove Point 2850 feet east of Howells Point 350 feet upstream of Route 301 Number of Latitude/ Longitude Coordinates to Follow 3 Upper Chester River 39.246002 -75.986618 39.245350 -75.985878 39.254440 -75.839638 CHSTF Travilla Wharf Marshy point across from Travilla Wharf Andover Branch 900 feet above Route 313 Middle Chester River 39.147564 -76.086426 39.146572 -76.075684 39.245350 -75.985878 39.246002 -75.986618 CHSOH 1100 feet below Browns Creek Northwest Point, west of Riverview Marshy point across from Travilla Wharf Travilla Wharf Lower Chester 39.029720 39.016422 38.970539 38.970455 39.146572 39.147564 39.056882 39.054563 River -76.242516 -76.296959 -76.248413 -76.246330 -76.075684 -76.086426 -76.220903 -76.220229 Eastern Bay 38.836365 38.752529 38.970455 38.970539 -76.369392 -76.340332 -76.246330 -76.248413 CHSMH 8 Wickes Beach, Eastern Neck Island Kent Island, 1600 feet north of Grollman Road Route 50, west side of Kent Narrows Route 50, east side of Kent Narrows Northwest Point, west of Riverview 1100 feet below Browns Creek South end of Eastern Neck, east of Route 445 bridge Northern tip of Eastern Neck Island, east of Route 445 bridge EASMH 4 Kent Point 1500 feet northeast of Green Marsh Point Route 50, east side of Kent Narrows Route 50, west side of Kent Narrows Upper Choptank River 38.810635 -75.902985 38.808270 -75.900391 38.980827 -75.792931 Middle Choptank River 38.653545 -75.959129 38.647415 -75.952339 38.808270 -75.900391 38.810635 -75.902985 CHOTF 3 1850 feet downstream from mouth of Tuckahoe Creek 1000 feet downstream of Gilpin Point 3500 feet upstream of Route 313 bridge CHOOH 4 1.5 miles downstream of Bow Knee Point 1.05 miles upstream of Cabin Creek 1000 feet downstream of Gilpin Point 1850 feet downstream from mouth of Tuckahoe Creek Lower Choptank River 38.672421 -76.340698 38.571705 -76.336029 38.573353 -76.306503 38.628571 -76.171051 38.649193 -76.153114 38.719967 -76.333054 38.719185 -76.334084 Mouth of Choptank River 38.649193 -76.153114 38.628571 -76.171051 38.647415 -75.952339 38.653545 -75.959129 CHOMH1 7 720 feet along shore north northwest of Blackwalnut Point Hills Point 1.6 miles almost due west of Hills Point 400 feet west of Castle Haven Point 0.9 miles north of Chlora Point North side Knapps Narrows, 150 feet west of Route 33 South side Knapps Narrows, 275 feet west of Route 33 CHOMH2 4 0.9 miles north of Chlora Point 400 feet west of Castle Haven Point 1.05 miles upstream of Cabin Creek 1.5 miles downstream of Bow Knee appendix c • 2003 CBP Segmentation Scheme Coordinates Geo-reference and Narrative Descriptions ------- 17 Segment Description Chesapeake Bay Program Segment Number of Latitude/ Longitude Coordinates to Follow Little Choptank 38.573353 38.571705 38.527523 38.526997 38.487057 38.421944 38.421051 38.398201 38.398605 Honga River 38.231964 38.215809 38.398605 38.398201 38.349953 38.348228 38.298965 38.295982 38.248642 38.248581 Fishing Bay 38.216042 38.232738 38.404148 38.404133 River -76.306503 -76.336029 -76.333801 -76.333771 -76.331779 -76.288742 -76.288589 -76.237053 -76.237030 -76.134285 -76.032349 -76.237030 -76.237053 -76.227982 -76.227264 -76.206718 -76.204597 -76.154419 -76.153191 -76.032051 -75.972618 -76.002716 -76.029968 Upper Nanticoke River 38.538052 -75.745972 38.536259 -75.744843 38.559706 -75.701489 38.561509 -75.701629 Middle Nanticoke River 38.387169 -75.859673 38.381268 -75.839233 38.536259 -75.744843 38.538052 -75.745972 38.553452 -75.774071 Lower Nanticoke River 38.24474 -75.941284 38.243217 -75.906105 38.381268 -75.839233 38.387169 -75.859673 Wicomico River 38.227970 38.202679 38.361588 Tangier Sound 37.941404 37.953599 37.953392 37.946050 37.906718 -75.893486 -75.890579 -75.583061 -76.083908 -76.052055 -75.993331 -75.943628 -75.952630 LCHMH 9 1.6 miles almost due west of Hills Point Hills Point East edge of tidal flat north of existing James Island 190 feet south of LCHMH Point #3 West side of Oyster Cove, Taylors Island Southern tip of Taylors Island Meekins Neck, across channel from Point #6 West shore Great Marsh Creek 1800 feet above Route 335 East shore Great Marsh Creek 1800 feet above Route 335 HNGMH 10 Lower Hooper Island between Nancys and Creek Points Bishops Head Point Great Marsh Creek, north side, 1900 feet above Route 335 Great Marsh Creek, south side, 1900 feet above Route 335 Drawbridge, southern Meekins Neck Drawbridge, northern Upper Hooper Island Ferry Point Northwest tip of Middle Hooper Island across from Ferry Point Middle Hooper Island, northwest end of The Thorofare Lower Hooper Island, northeast end of The Thorofare FSBMH 4 Bishops Head Point Southern-most point of Clay Island Transquaking River west of Thorofare Marsh Backgarden Pond, southeast shore NANTF 4 600 feet upstream of Molly Horn Branch 375 feet upstream of Plum Creek MD/DE state line, southern shore MD/DE state line, northern shore NANOH 5 900 feet downstream of Wapremander Creek 600 feet upstream of Quantico Creek 375 feet upstream of Plum Creek 600 feet upstream of Molly Horn Branch Marshyhope Creek, 500 feet downstream of Big Indian NANMH 4 Sandy Island, northeast of Frog Point West of Waterview, north of Jones Creek 600 feet upstream of Quantico Creek 900 feet downstream of Wapremander Creek WICMH 3 Nanticoke Point (Stump Point Marsh) 1100 feet west of the tip of Long Point Beaverdam Creek, 3000 feet upstream of Route 12 TANMH 33 MD/VA boundary, 2.25 miles west of Smith Gut Point MD/VA boundary, 1450 feet west of Hog Neck MD/VA boundary, 400 feet east of Horse Hammock MD/VA boundary, between Smith and Cedar Islands MD/VA boundary, 2.75 miles west of Clump Island appendix c • 2003 CBP Segmentation Scheme Coordinates Geo-reference and Narrative Descriptions ------- 18 Segment Description 37.911304 37.911789 37.924927 38.015781 38.016033 38.020733 38.020973 38.036049 38.058910 38.064907 38.065315 38.075314 38.075665 38.078552 38.122917 38.125946 38.131565 38.160080 38.160442 38.202679 38.227970 38.243217 38.244740 38.232738 38.216042 38.215809 38.231964 38.231445 Manokin River 38.131565 38.125946 38.122917 38.078552 38.075665 38.075314 38.069160 38.069599 38.073784 38.074146 38.172668 38.160442 38.160080 Big Annemessex 38.058910 38.036049 38.020973 38.020733 38.016033 38.015781 38.087246 38.074146 38.073784 38.069599 38.069160 38.065315 38.064907 -75.883558 -75.837732 -75.848007 -75.845947 -75.846458 -75.856712 -75.856819 -75.868935 -75.868744 -75.866974 -75.866608 -75.870750 -75.871155 -75.877586 -75.937126 -75.941216 -75.948860 -75.932388 -75.929558 -75.890579 -75.893486 -75.906105 -75.941284 -75.972618 -76.032051 -76.032349 -76.134285 -76.135773 -75.948860 -75.941216 -75.937126 -75.877586 -75.871155 -75.870750 -75.855591 -75.853897 -75.848656 -75.848228 -75.732979 -75.929558 -75.932388 River -75.868744 -75.868935 -75.856819 -75.856712 -75.846458 -75.845947 -75.733032 -75.848228 -75.848656 -75.853897 -75.855591 -75.866608 -75.866974 Chesapeake Number of Latitude/ Bay Program Longitude Coordinates Segment to Follow MD/VA boundary, 300 feet north of Green Harbor Island MD/VA boundary, 1.15 south of Cow Gap Island Eastward Point, on eastern side of Broad Creek East side of Daugherty Creek Canal West side of Daugherty Creek Canal South side of gut southwest of Acre Creek North side of gut southwest of Acre Creek 700 feet east of Flatcap Point, Janes Island South shore of Pat Island Northeast Pat Island, across gut from Hazard Island Hazard Island, across gut from Pat Island Gut between Hazard Cove and Mine Creek, south side Gut between Hazard Cove and Mine Creek, north side Hazard Island, 1200 feet northeast of tip of Hazard Point Eastern side of Little Deal Island Eastern point on north side of Little Deal Island Wenona on Deal Island, north of channel Upper Thorofare, Deal Island side Upper Thorofare at the mouth of Moores Gut 1100 feet west of the tip of Long Point Nanticoke Point, Stump Point Marsh West of Waterview, north of Jones Creek Sandy Island, northeast of Frog Point Southern-most point of Clay Island Bishops Head Point Bishops Head Point Lower Hooper Island between Nancys and Creek Point Lower Hooper Island between Nancys and Creek Point MANMH 13 Wenona on Deal Island, north of channel Eastern point on north side of Little Deal Island Eastern side of Little Deal Island Hazard Island, 1200 feet northeast of tip of Hazard Point Gut between Hazard Cove and Mine Creek, north side Gut between Hazard Cove and Mine Creek, south side West part Hazard Island at Shirtpond Cove East part Hazard Island at Shirtpond Cove West side of gut heading north from Flatland Cove East side of gut heading north from Flatland Cove Manokin River confluence with Hall Branch Upper Thorofare at the mouth of Moores Gut Upper Thorofare, Deal Island side BIGMH 13 South shore of Pat Island 700 feet east of Flatcap Point, Janes Island North side of gut southwest of Acre Creek South side of gut southwest of Acre Creek West side of Daugherty Creek Canal East side of Daugherty Creek Canal 1000 feet below confluence with Annemesex Creek East side of gut heading north from Flatland Cove West side of gut heading north from Flatland Cove East part Hazard Island at Shirtpond Cove West part Hazard Island at Shirtpond Cove Hazard Island, across gut from Pat Island Northeast Pat Island, across gut from Hazard Island appendix c • 2003 CBP Segmentation Scheme Coordinates Geo-reference and Narrative Descriptions ------- 19 Segment Description Chesapeake Bay Program Segment Number of Latitude/ Longitude Coordinates to Follow Upper Pocomoke River 38.062958 -75.617470 38.062840 -75.616302 38.183201 -75.391991 POCTF West of Unionville, Somerset County side West of Unionville, Worcester County side Snow Hill, 1900 feet upstream of Route 12 3 Middle Pocomoke River 37.966858 -75.674603 37.951850 -75.676225 37.949924 -75.667353 37.945125 -75.656153 37.946728 -75.648248 37.966423 -75.648553 37.994347 -75.624314 37.994449 -75.623122 38.062840 -75.616302 38.062958 -75.617470 Lower Pocomoke River 37.924927 -75.848007 37.911789 -75.837732 37.912169 -75.801148 37.941226 -75.761753 37.954523 -75.704753 37.955327 -75.691653 37.951850 -75.676225 37.966858 -75.674603 DELAWARE SEGMENT BOUNDARIES C&D Canal 39.536623 -75.779582 39.534616 -75.779424 39.542904 -75.724831 Nanticoke 38.561509 -75.701629 38.559706 -75.701489 38.642723 -75.606522 POCOH 10 On mainland 4000 feet northwest of Fair Island MD/VA boundary, Pocomoke Sound MD/VA boundary, Pocomoke Sound MD/VA boundary south of Williams Point MD/VA boundary, Pocomoke Sound MD/VA boundary, 700 feet upstream of mouth Intersection of Somerset County and Worcester County, MD County, VA Worcester/ Accomack Co. boundary, eastern shore West of Unionville, Worcester County side West of Unionville, Somerset County side POCMH 8 Eastward Point, on eastern side of Broad Creek MD/VA boundary, 1.15 south of Cow Gap Island MD/VA boundary, Pocomoke Sound MD/VA boundary, Pocomoke Sound MD/VA boundary, Pocomoke Sound MD/VA boundary, Pocomoke Sound MD/VA boundary, Pocomoke Sound On mainland 4000 feet northwest of Fair Island C&DOH 3 MD/DE state line, northern shore MD/DE state line, southern shore North of Summit Bridge and 250 feet east of the power line NANTF 3 MD/DE state line, northern shore MD/DE state line, southern shore Seaford, DE just above Middleford Road and Accomack DISTRICT OF COLUMBIA SEGMENT BOUNDARIES Upper Potomac River 38.791836 -77.038923 38.802464 -77.025166 38.805753 -77.020951 38.809449 -77.016184 38.850609 -77.018761 38.850546 -77.022368 38.856720 -77.022491 38.929682 -77.115663 38.929522 -77.116453 Anacostia River 38.856720 -77.022491 38.850546 -77.022368 38.850609 -77.018761 38.918261 -76.941198 38.918850 -76.941951 POTTF 9 DC/MD/VA boundary 200 feet east of Jones Point Park DC/MD boundary, near Fox Ferry Point DC/MD boundary, southern shore of Oxon Creek. DC/MD boundary, northern shore of Oxon Creek. Border between Boiling Air Force Base and US Naval Station 2250 feet due south of western side of Hains Point Hains Point Chain Bridge, eastern shore MHW, Chain Bridge, western shore ANATF 5 Hains Point 2250 feet due south of western side of Hains Point Border between Boiling Air Force Base and US Naval Station DC/MD boundary, eastern side of Route 50 bridge DC/MD boundary, western shore appendix c • 2003 CBP Segmentation Scheme Coordinates Geo-reference and Narrative Descriptions ------- 20 Chesapeake Number of Latitude/ Segment Bay Program Longitude Coordinates Description Segment to Follow VIRGINIA SEGMENT BOUNDARIES Lower Central Chesapeake Bay CB5MH 6 37.619465 -76.280251 Fleets Island, at end of road north of Windmill Point 37.797581 -76.025650 3 miles west northwest of Tangier Sound Light 37.941404 -76.083908 MD/VA boundary, 2.25 miles west of Smith Gut Point 37.885680 -76.229038 MD/VA boundary, 2500 feet southwest of Smith Point 37.889451 -76.236198 Smith Point 37.909725 -76.263702 East of Ophelia, 300 feet northwest of light Upper Potomac River POTTF 5 38.524181 -77.285294 Midway between Shipping Point and Quantico Pier 38.524168 -77.284864 MLW midway between Shipping Point and Quantico Pier 38.791836 -77.038923 DC/MD/VA boundary 200 feet east of Jones Point Park 38.929522 -77.116453 MHW, Chain Bridge, western shore 38.929473 -77.116695 Chain Bridge, western shore Following the MLW line which defines the Maryland/Virginia boundary to the first point described above. This segment contains the following embayments where the Maryland/Virginia boundary is the confluence of the mouth of the embayment with the Potomac River: Hunting Creek Unnamed embayment (Mason Neck NWR) Little Hunting Creek Occoquan Bay Dogue Creek Powells Creek Gunston Cove Quantico Creek Middle Potomac River POTOH 4 38.389660 -77.029305 1 mile southeast of Mathias Point, just north of Route 639 38.389680 -77.029268 MLW 1 mile southeast of Mathias Point, just north of Route 639 38.524168 -77.284864 MLW midway between Shipping Point and Quantico Pier 38.524181 -77.285294 Midway between Shipping Point and Quantico Pier Following the MLW line which defines the Maryland/Virginia boundary to the first point described above. This segment contains the following embayments where the Maryland/Virginia boundary is the confluence of the mouth of the embayment with the Potomac River: Unnamed Embayment (Chopawamsic Island) Aquia Creek Unnamed Embayment (near Arkendale Road) Potomac Creek Lower Potomac River POTMH 4 37.909725 -76.263702 East of Ophelia, 300 feet northwest of light 37.909777 -76.263700 MLW east of Ophelia, 300 feet northwest of light 38.389680 -77.029268 MLW 1 mile southeast of Mathias Point, just north of Route 639 38.389660 -77.029305 1 mile southeast of Mathias Point, just north of Route 639 Following the MLW line which defines the Maryland/Virginia boundary to the first point described above. This segment contains the following embayments where the Maryland/Virginia boundary is the confluence of the mouth of the embayment with the Potomac River: Upper Machodoc Creek Gardner Creek Rosier Creek Jackson Creek Monroe Bay Bonum Creek Mattox Creek Yeocomico River Popes Creek Coan River Nomini Bay Presley Creek Lower Machodoc Creek Hull Creek Unnamed Embayment Hock Creek (south of Ragged Point) appendix c • 2003 CBP Segmentation Scheme Coordinates Geo-reference and Narrative Descriptions ------- 21 Segment Description Chesapeake Bay Program Segment Number of Latitude/ Longitude Coordinates to Follow Middle Pocomoke River 37.951850 -75.676225 37.941841 -75.677261 37.994449 -75.623122 37.994347 -75.624314 37.966423 37.946728 37.945125 37.949924 -75.648553 -75.648248 -75.656153 -75.667353 Lower Pocomoke River 37.911789 37.806671 37.806152 37.787926 37.941841 37.951850 37.955327 37.954523 37.941226 37.912169 Tangier Sound 37.792580 37.781960 37.846237 37.911789 37.911304 37.906718 37.946050 37.953392 37.953599 37.941404 37.797581 Western Lower 37.084686 37.087894 37.083694 37.729496 37.619465 37.613708 37.512447 37.473808 37.462313 37.459854 37.309418 37.105408 Eastern Lower 37.083694 37.010635 37.111908 37.115574 37.787926 37.806152 37.806671 37.846237 -75.837732 -75.755676 -75.755272 -75.741074 -75.677261 -75.676225 -75.691653 -75.704753 -75.761753 -75.801148 -76.032707 -75.873726 -75.786530 -75.837732 -75.883558 -75.952630 -75.943628 -75.993331 -76.052055 -76.083908 -76.025650 Chesapeake Bay -76.271126 -76.268974 -76.165154 -76.123352 -76.280251 -76.280586 -76.285423 -76.263008 -76.257705 -76.257225 -76.275558 -76.283676 Chesapeake Bay -76.165154 -75.965233 -75.933571 -75.970390 -75.741074 -75.755272 -75.755676 -75.786530 POCOH 8 MD/VA boundary, Pocomoke Sound Between Pig Point and Shad Landing Worcester/Accomack County boundary, eastern shore Intersection of Somerset County and Worcester County, MD and Accomack County, VA MD/VA boundary, 700 feet upstream of mouth MD/VA boundary, Pocomoke Sound MD/VA boundary south of Williams Point MD/VA boundary, Pocomoke Sound POCMH 10 MD/VA boundary, 1.15 miles south of Cow Gap Island Scott Island, west side Scott Island, south side South of Webb Island, between Deep Creek and Doe Creek Between Pig Point and Shad Landing MD/VA boundary, Pocomoke Sound MD/VA boundary, Pocomoke Sound MD/VA boundary, Pocomoke Sound MD/VA boundary, Pocomoke Sound MD/VA boundary, Pocomoke Sound TANMH 11 3.25 miles west, 0.3 miles north of Tangier Sound Light 1 mile southeast of south tip of Watts Island, just east of quad bound. 0.57 miles west southwest of flashing red light at tip of Guilford Flats MD/VA boundary, 1.15 miles south of Cow Gap Island MD/VA boundary, 300 feet north of Green Harbor Island MD/VA boundary, 2.75 miles west of Clump Island MD/VA boundary, between Smith and Cedar Islands MD/VA boundary, 400 feet east of Horse Hammock MD/VA boundary, 1450 feet west of Hog Neck MD/VA boundary, 2.25 miles west of Smith Gut Point 3 miles west northwest of Tangier Sound Light CB6PH 12 900 feet southwest of abandoned lighthouse north northeast of Grand View 400 feet northeast of abandoned lighthouse north northeast of Grand View 6 miles east of Grand View, 10.2 miles west of Fishermans Island 10 miles east of Hughlett Point, approximately 1 mile north of wreck Fleets Island, at end of road north of Windmill Point Windmill Point Gwynn Island, east side of northern end Gwynn Island, 0.25 miles northeast of Sandy Point tip 0.08 miles north northeast from northern tip of Rigby Island Rigby Island, east side of northern end North side of Deep Creek, north of New Point Comfort East side of Northend Point CB7PH 11 6 miles east of Grand View, 10.2 miles west of Fishermans Island 5 miles south of Fishermans Island, 6.3 miles northeast of Cape Henry 0.68 miles west of Smith Island, 2 miles east of Route 13 300 feet due north of light in channel, 260 feet west of Route 13 South of Webb Island, between Deep Creek and Doe Creek Scott Island, south side Scott Island, west side 0.57 miles southwest of flashing red light at tip of Guilford Flats appendix c • 2003 CBP Segmentation Scheme Coordinates Geo-reference and Narrative Descriptions ------- 22 Segment Description 37.781960 37.792580 37.729496 -75.873726 -76.032707 -76.123352 Chesapeake Number of Latitude/ Bay Program Longitude Coordinates Segment to Follow 1 mile southeast of south tip of Watts Island, just east of quad boundary 3.25 miles west, 0.3 miles north of Tangier Sound Light 10 miles east of Hughlett Point, approximately 1 mile north of wreck Mouth of the 36.967342 36.907486 36.907352 36.919083 37.010635 37.083694 37.087894 37.084686 37.017586 37.002299 Chesapeake Bay -76.296967 -76.093224 -76.090591 -75.993782 -75.965233 -76.165154 -76.268974 -76.271126 -76.297104 -76.300643 Upper Rappahannock River 38.082386 -76.979980 38.089813 -76.973442 38.312946 -77.462326 Middle Rappahannock River 37.979389 -76.924652 37.988907 -76.895859 38.089813 -76.973442 38.082386 -76.979980 Lower Rappahannock River 37.558598 -76.297974 37.558395 -76.283516 37.613708 -76.280586 37.653767 -76.457794 37.649799 -76.496513 37.988907 -76.895859 37.979389 -76.924652 Corrotoman River 37.649799 37.653767 37.769997 Piankatank River 37.473808 37.512447 37.558395 37.558598 37.577724 37.459854 37.462313 -76.496513 -76.457794 -76.478516 -76.263008 -76.285423 -76.283516 -76.297974 -76.583008 -76.257225 -76.257705 Upper Mattaponi River 37.656723 -76.882187 37.658237 -76.881470 37.788898 -77.104210 CB8PH 10 Where 1-64 south meets Willoughby Spit West side of Lesner Bridge (Route 60) East side of Lesner Bridge (Route 60) Fort Story, 2000 feet north of North Virginia Beach 5 miles south of Fishermans Island, 6.3 miles northeast of Cape Henry 6 miles east of Grand View, 10.2 miles west of Fishermans Island 400 feet northeast of abandoned lighthouse north northeast of Grand View 900 feet southwest of abandoned lighthouse north northeast of of Grand View Fort Monroe Military Reservation, west of Thimble Shoal 0.32 miles east northeast of Old Point Comfort lighthouse RPPTF 3 430 feet east of the mouth of Hutchinson Swamp 0.7 miles upstream of Peedee Creek Fredericksburg, 300 feet above aqueduct RPPOH 4 1000 feet downstream (southeast) of Jenkins Landing Mulberry Island, 0.33 miles upstream (northwest) of Mulberry Point 0.7 miles upstream of Peedee Creek 430 feet east of the mouth of Hutchinson Swamp RPPMH 7 Stingray Point 0.8 miles east of Stingray Point (point 1) Windmill Point 0.5 miles northwest of Orchard Point Approximately 0.25 miles south of Whitehouse Creek mouth Mulberry Island, 0.33 miles upstream (northwest) of Mulberry Point 1000 feet downstream (southeast) of Jenkins Landing CRRMH 3 Approximately 0.25 miles south of Whitehouse Creek mouth 0.5 miles northwest of Orchard Point Western Branch, 400 feet upstream of Route 3 PIAMH 7 Gwynn Island, 0.25 miles northeast of Sandy Point tip Gwynn Island, east side of northern end 0.8 miles east of Stingray Point (RPPMH point 1) Stingray Point Dragon Swamp, 0.5 miles below Zion Branch Rigby Island, east side of northern end 0.08 miles north northeast from northern tip of Rigby Island MPNTF 3 Across the river from Courthouse Landing 1000 feet upstream of Mitchell Hill Creek Aylett, 800 feet above Route 360 bridge appendix c • 2003 CBP Segmentation Scheme Coordinates Geo-reference and Narrative Descriptions ------- 23 Segment Description Chesapeake Bay Program Segment Number of Latitude/ Longitude Coordinates to Follow Lower Mattaponi River 37.538822 -76.791504 37.537014 -76.786194 37.658237 -76.881470 37.656723 -76.882187 Upper Pamunkey River 37.543476 -76.976799 37.543507 -76.974968 37.689621 -77.214119 Lower Pamunkey River 37.532749 -76.810616 37.535069 -76.805229 37.543507 -76.974968 37.543476 -76.976799 Middle York River 37.288246 37.316483 37.537014 37.538822 37.535069 37.532749 Lower York River 37.223167 37.262413 37.316483 37.288246 Mobjack Bay 37.105408 37.309418 37.262413 37.223167 Upper James River 37.227379 37.241180 37.533394 37.329826 37.317638 Appomattox River 37.317638 37.329826 37.233662 Middle James River 37.154785 37.202007 37.245670 37.245888 37.241180 37.227379 -76.598122 -76.577034 -76.786194 -76.791504 -76.805229 -76.810616 -76.420166 -76.390877 -76.577034 -76.598122 -76.283676 -76.275558 -76.390877 -76.420166 -76.946426 -76.945686 -77.436775 -77.281128 -77.277275 -77.277275 -77.281128 -77.407867 -76.670403 -76.626305 -76.871529 -76.897522 -76.945686 -76.946426 MPNOH 4 Lord Delaware Bridge (Route 33), West Point side Lord Delaware Bridge (Route 33), east side 1000 feet upstream of Mitchell Hill Creek Across the river from Courthouse Landing PMKTF 3 0.75 miles upstream of creek at Cook Landing Cohoke Marsh, 0.9 miles downstream of Turkey Creek 2000 feet upstream of Totopotomoy Creek PMKOH 4 Eltham Bridge (Routes. 30/33), west side Eltham Bridge (Routes 30/33), east side (West Point) Cohoke Marsh, 0.9 miles downstream of Turkey Creek 0.75 miles upstream of creek at Cook Landing YRKMH 6 Naval Supply Center, Cheatham Annex Blundering Point, 1000 feet northwest of tip Lord Delaware Bridge (Route 33), east side Lord Delaware Bridge (Route 33), West Point side Eltham Bridge (Routes 30/33), east side (West Point) Eltham Bridge (Routes 30/33), west side YRKPH 4 Sandbox, northeast tip of Goodwin Neck Jenkins Neck, between Hog Island and Sandy Point Blundering Point, 1000 feet northwest of tip Naval Supply Center, Cheatham Annex MOBPH 4 East side of Northend Point North side of Deep Creek, north of New Point Comfort Jenkins Neck, between Hog Island and Sandy Point Sandbox, northeast tip of Goodwin Neck JMSTF 5 0.3 miles downstream of Sloop Point Tettington, 500 feet downstream of road to the river Upstream of Mayos Bridge, as far as Browns Island dam Mouth of small creek east of Shand Creek and north of light City Point, Hopewell APPTF 3 City Point, Hopewell Mouth of small creek east of Shand Creek and north of light Petersburg, 1500 feet upstream of Route 1 bridge JMSOH 6 0.7 miles north of Hunnicut Creek, south of Hog Island Near Carters Grove Home, 1.25 miles southeast of Grove Creek 1300 feet north northwest of Barrets Point During Point Tettington, 500 feet downstream of road to the river 0.3 miles downstream of Sloop Point appendix c • 2003 CBP Segmentation Scheme Coordinates Geo-reference and Narrative Descriptions ------- 24 Segment Description Chesapeake Bay Program Segment Number of Latitude/ Longitude Coordinates to Follow Chickahominy River 37.245888 -76.897522 37.245670 -76.871529 37.429108 -77.028267 Lower James River 36.923653 -76.385788 36.964985 -76.410645 37.202007 -76.626305 37.154785 -76.670403 Mouth of James River 36.967342 -76.296967 37.002299 -76.300643 37.017586 -76.297104 36.964985 -76.410645 36.923653 -76.385788 36.923153 -76.354614 36.925476 -76.329292 Western Branch Elizabeth River 36.856030 -76.331711 36.860474 -76.341103 36.818913 -76.399612 Southern Branch Elizabeth River 36.839340 -76.290077 36.839539 -76.295753 36.723557 -76.248955 CHKOH 3 During Point 1300 feet north northwest of Barrets Point Above Holly Landing, 150 feet below temporary divergence JMSMH 4 Northwest corner of Craney Island Disposal Area Newport News Point, just south of Lincoln Park Near Carters Grove Home, 1.25 miles southeast of Grove Creek 0.7 miles north of Hunnicut Creek, south of Hog Island JMSPH 7 Where 1-64 S meets Willoughby Spit 0.32 miles east northeast of Old Point Comfort lighthouse Fort Monroe Military Reservation, west of Thimble Shoal Newport News Point, just south of Lincoln Park Northwest corner of Craney Island Disposal Area Northeast corner of Craney Island Disposal Area Northwest side of pond 1950 feet south of Sewells Point Docks WBEMH 3 Pinner Point, northwest corner at railroad tracks Lovett Point, southeast corner 1800 feet south of Hodges Ferry Bridge (Route 337) SBEMH 3 930 feet west of the south end of Berkley Bridge 250 feet south of light and 2500 feet north of Downtown Tunnel Great Bridge Lock Eastern Branch Elizabeth River 36.843090 -76.289368 36.839779 -76.289261 36.827354 -76.167595 EBEMH The Waterside 700 feet west of the south end of Berkley Bridge 300 feet downstream of Route 165 3 Lafayette River LAFMH 3 36.903587 -76.323219 Tanners Point 36.901581 -76.314362 1400 feet due east of light southeast of Tanners Point 36.865322 -76.257843 Calvary Cemetery, 3400 feet upstream of Route 168 Mouth to mid-Elizabeth River ELIPH 10 36.925476 -76.329292 Northwest side of pond 1950 feet south of Sewells Point Docks 36.923153 -76.354614 Northeast corner of Craney Island Disposal Area 36.860474 -76.341103 Lovett Point, southeast corner 36.856030 -76.331711 Pinner Point, northwest corner at railroad tracks 36.839539 -76.295753 250 feet south of light and 2500 feet north of Downtown Tunnel 36.839340 -76.290077 930 feet west of the south end of Berkley Bridge 36.839779 -76.289261 700 feet west of the south end of Berkley Bridge 36.843090 -76.289368 The Waterside 36.901581 -76.314362 1400 feet due east of light southeast of Tanners Point 36.903587 -76.323219 Tanners Point Lynnhaven River 36.907352 36.907486 LYNPH -76.090591 East side of Lesner Bridge (Route 60) -76.093224 West side of Lesner Bridge (Route 60) appendix c • 2003 CBP Segmentation Scheme Coordinates Geo-reference and Narrative Descriptions ------- Chesapeake Bay Program A Watershed Partnership U.S. Environmental Protection Agency Region III Chesapeake Bay Program Office Annapolis, Maryland 1-800-YOUR-BAY Monitoring and Analysis Subcommittee and Tidal Monitoring and Analysis Workgroup ------- |