Refined Designated Uses for Chesapeake Bay and Tidal Tributary Waters A. Cross Section of Chesapeake Bay or Tidal Tributary B. Oblique View of the "Chesapeake Bay" and its Tidal Tributaries Figure A-1. Conceptual illustration of the five Chesapeake Bay tidal waters designated uses ------- Migratory Spawning and Nursery Habitat Spawning and Nursery Habitat Figure A-2. Map of the Chesapeake Bay Migratory Spawning and Nursery Designated Use Habitat. Source: Funderburk ef al. 1991. ------- Spawning and Nursery Habitat For Anadromous and Semi-Anadromoys Fish Species Figure A-3. Count of overlapping spawning and nursery areas for striped bass, american shad, hickory shad, alewife and blueback herring, white perch and yellow perch. Source: Funderburk ef al. 1991. ------- Shallow Water Habitat Shallow Water Habitat | | Two Meter Bathymetry Contour Figure A-4. Map of the Chesapeake Bay Shallow Water Designated Use Habitat. Source: Batiukefa/. 1992. ------- Open Water Habitat Open Water Habitat Figure A-5. Map of the Chesapeake Bay Open Water Designated Use Habitat. Source: Funderburk ef a/. 1991. ------- Open Water Dedsignated Use Boundary Open Water Pycnocline Shallow Water Figure A-6. Illustration of how the upper boundary of the pycnocline delineates the lower boundary for the open water designated use. ------- Sub-pycnocline Waters are Influenced by Exchange with the Ocean Above Pyonocline Open Water Sub-pycnocline area is flow restricted Below Pycnoeline Sub-pycnocline area has free exchange with ocean Figure A-7. Illustration of how in areas where the sub-pycnocline water have a free exchange with oxygenated ocean waters, the open water designated use extends ail the way down to the bottom of the water column. ------- Chesapeake Bay Bathymetry and Extents of Designated Use Regions Figure A-8. Illustration of where a combination of the open water, deep water and deep channel designated uses will apply in tandom or where the open water designated use would apply all the way through the water column to the bottom. Open Water/Deep Water/Deep Channel Open Water/Deep Water Open Water Depth (meters) ~ 1-7 8-14 15-21 22-28 29-35 36-42 ------- Deep Water Dedsignated Use Boundaries Open Water Deep Water Shallow Water Upper Lower Figure A-9. Illustration of how the upper and lower boundaries of the pycnocline delineate the boundaries for the deep water designated use. ------- Deep Channel Dedsignated Boundary Open Water Deep Water Deep Channel Shallow Water Figure A-10. Illustration of how the lower boundary of the pycnocline delineates the upper boundary for the deep channel designated use. ------- |