U.S. ENVIRONMENTAL PROTECTION AGENCY NATIONAL EUTROPHICATION SURVEY WORKING PAPER SERIES REPORT ON LAKE BYRON BEADLE COUNTY SOUTH DAKOTA EPA REGION VIII WORKING PAPER No, 602 CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON and ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA •&G.P.O. 699-440 ------- REPORT ON LAKE BYRON BEADLE COUNTY SOUTH DAKOTA EPA REGION VIII WORKING PAPER No, 602 WITH THE COOPERATION OF THE SOUTH DAKOTA DEPARTMENT OF ENVIRONMENTAL PROTECTION AND THE SOUTH DAKOTA NATIONAL GUARD JANUARY/ 1977 ------- CONTENTS Page Foreward ii List of South Dakota Study Lakes iv Lake and Drainage Area Map v Sections I. Conclusions 1 II. Lake and Drainage Basin Characteristics 1 III. Lake Water Quality S.ummary 2 IV. Nutrient Loadings 3 V. Literature Reviewed 7 VI. Appendices 8 ------- 11 FOREWORD The National Eutrophication Survey was initiated in 1972 in response to an Administration commitment to investigate the nation- wide threat of accelerated eutrophication to freshwater lakes and reservoirs. OBJECTIVES The Survey was designed to develop, in conjunction with state environmental agencies, information on nutrient sources, concentrations, and impact on selected freshwater lakes as a basis for formulating comprehensive and coordinated national, regional, and state management practices relating to point-source discharge reduction and non-point source pollution abatement in lake watersheds. ANALYTIC APPROACH The mathematical and statistical procedures selected for the Survey's eutrophication analysis are based on related concepts that: a. A generalized representation or model relating sources, concentrations, and impacts can be constructed. b. By applying measurements of relevant parameters associated with lake degradation, the generalized model can be transformed into an operational representation of a lake, its drainage basin, and related nutrients. c. With such a transformation, an assessment of the potential for eutrophication control can be made. LAKE ANALYSIS In this report, the first stage of evaluation of lake and water- shed data collected from the study lake and its drainage basin is documented. The report is formatted to provide state environmental agencies with specific information for basin planning [§303(e)J, water quality criteria/standards review [§303(c)], clean lakes [§314(a,b)], and water quality monitoring [§106 and §305(b)] activities mandated by the Federal Water Pollution Control Act Amendments of 1972. ------- Beyond the single lake analysis, broader based correlations between nutrient concentrations (and loading) and trophic condi- tion are being made to advance the rationale and data base for refinement of nutrient water quality criteria for the Nation's freshwater lakes. Likewise, multivariate evaluations for the relationships between land use, nutrient export, and trophic condition, by lake class or use, are being developed to assist in the formulation of planning guidelines and policies by EPA and to augment plans implementation by the states. ACKNOWLEDGMENT The staff of the National Eutrophication Survey (Office of Research & Development, U. S. Environmental Protection Agency) expresses sincere appreciation to the South Dakota Departments of Environmental Protection and Game, Fish and Parks for professional involvement, to the South Dakota National Guard for conducting the tributary sampling phase of the Survey, and to those wastewater treatment plant operators who voluntarily provided effluent samples. Allyn Lockner, Secretary, and Blaine Barker and Duane Murphy, Department of Environmental Quality; Douglas Hansen, Department of Game, Fish and Parks; and James Hayden, Director, State Lakes Preservation Committee provided invaluable lake documentation and counsel during the Survey, reviewed the preliminary reports, and provided critiques most useful in the preparation of this Working Paper series. Major General Duane L. Corning, the Adjutant General of South Dakota, and Project Officer Colonel Robert D. Chalberg, who directed the volunteer efforts of the South Dakota National Guardsmen, are also gratefully acknowledged for their assistance to the Survey. ------- iv NATIONAL EUTROPHICATION SURVEY STUDY LAKES STATE OF SOUTH DAKOTA LAKE NAME Albert Alvin Angostura Brant Byron Clear Clear Cochrane Cottonwood Deerfield Enemy Swim Herman John Kampeska Madison Mitchell Norden East Oakwood West Oakwood Pactola Pickerel Poinsett Red Iron South Richmond Roy Sand Sheridan Stockdale East Vermillion Wall Waubay COUNTY Kingsbury Lincoln Fall River Lake Beadle Marshall Minnehaha Deuel Spink Pennington Day Lake Hamli n Codington Lake Davidson Hamli n Brookings Brookings Pennington Day Brookings, Marshall Brown Marshall Brown Pennington Custer McCook Minnehaha Day Lake ------- Tributary Sampling Site X Lake Sampling Site ------- LAKE BYRON STORE! NO. 4605 I. INTRODUCTION Due to lack of flows, only a few tributary samples were collected, and no outlet samples were taken. Therefore, this report relates only to the lake sampling data. However, the few tributary sampling data obtained are included in Appendix D for the record. II. CONCLUSIONS A. Trophic Condition: Survey data indicate that Lake Byron is eutrophic. It ranked thirtieth in overall trophic quality when the 31 South Dakota lakes sampled in 1974 were compared using a combination of six water quality parameters*. Twenty-seven of the lakes had less median total phosphorus, 26 had less median dissolved ortho- phosphorus, 29 had less median inorganic nitrogen, 28 had less mean chlorophyll a_, and 25 had greater mean Secchi disc trans- parency. Survey limnologists noted that the lake was very turbid and observed algal blooms in July and September. B. Rate-Limiting Nutrient: The algal assay results indicate that the lake was limited by nitrogen at the time the sample was collected (09/18/74). The lake data indicate nitrogen limitation at all sampling stations and times. * See Appendix A. ------- III. LAKE AND DRAINAGE BASIN CHARACTERISTICS1" A. Lake Morphometry : 1. Surface area: 5.86 kilometers2. 2. Mean depth: 2.4 meters. 3. Maximum depth: 3.0 meters. 4. Volume: 14.279 x 106 m3. B. Precipitation*: 1. Year of sampling: 33.1 centimeters. 2. Mean annual: 49.4 centimeters. t Table of metric conversions—Appendix B. tt Murphey, 1974. * See Working Paper No. 175, "...Survey Methods, 1973-1976" ------- IV. LAKE WATER QUALITY SUMMARY Lake Byron was sampled three times during the open-water season of 1974 by means of a pontoon-equipped Huey helicopter. Each time, samples for physical and chemical parameters were collected from one or more depths at two stations on the lake (see map, page v). During each visit, a single depth-integrated (near bottom to surface) sample was composited from the stations for phytoplankton ide.otifica- tion and enumeration; and during the last visit, a single 18.9-liter depth-integrated sample was composited for algal assays. Also each time, a depth-integrated sample was collected from each of the stations for chlorophyll a_ analysis. The maximum depths sampled were 0.6 meters at station 1 and 0.9 meters at station 2. The sampling results are presented in full in Appendix C and are summarized in the following table. ------- OF AND TEMP (C) OISS OXY (MG/L) CNDCrVY (MCHOMO) PH (STAND UNITS) TOT ALK (MG/L) TOT P (MG/L) OWTHO P (MG/L) N02*N03 (MG/D AMMONIA (MG/L) KJEL N (MG/L) INORG N (MG/L) TOTAL N (MG/L) CHLRPYL A (UG/L) SECCHI (METERS) 1ST SAMPLING ( 4/24/74) ? SITES RANGE MEAN MEDIAN 10.2 - 10.6 10.4 10.4 9.6 - 9.?. 9.7 9.7 1147. - 1162. 1154. 1154. 8.1 - 8.1 8.1 8.1 246. - 250. 24B. 248. 0.379 - 0.710 0.54<* 0.544 u.130 - 0.319 0.224 0.224 0.190 - 0.340 0.265 0.265 0.400 - 0.570 0.485 0.4d5 2.400 - 2.700 2.550 2.550 0.740 - 0.760 0.750 0.750 2.590 - 3.040 ?.*15 2.815 12.1 - 22.8 17.4 17.4 0.1 - 0.2 0.2 0.2 CHEMICAL c-iA^iCTEKisr ics ro^ LAKE ~ STu^ET CODE 4605 2NO SAMPLING ( 7/11/74) 2 SITES KANGE MEAN MEDIAN 24.3 - 24.8 24.5 24.5 6.0 - 6.4 6.2 6.3 1940. - 2054. 1997. 1998. B.9 - 9.0 9.0 9.0 2dt>. - 306. 295. 293. 0.233 - 0.443 0.356 0.374 0.117 - 0.188 0.155 0.158 0.130 - 0.190 0.162 0.165 0.190 - 0.220 0.207 0.^10 2.900 - 3.400 3.125 3.100 0.3*0 - 0.390 0.370 0.375 3.030 - 3.590 3.287 3.265 57.8 - 183.6 120.7 120.7 0.2 - 0.5 0.3 0.3 3RD SAMPLING ( 9/19/74) 2 SITES *ANGE MEAN MEDIAN 17.8 - 19.2 18.3 17.9 10.2 - 14.d 12.9 13.6 1942. - 2134. 2008. 1947. fc).9 - 8.9 a.9 a.9 420. - 470. 447. 450. 0.458 - 0.792 0.616 0.604 0.131 - 0.252 0.176 0.146 0.020 - 0.030 0.023 0.020 0.060 - 0.080 0.070 0.070 0.900 - 1.100 1.000 1.000 0.080 - 0.100 0.093 O.lOO 0.9^0 - 1.130 1.023 1.020 177.9 - 441.9 309.9 309.9 0.3 - 0.5 0.4 0.4 ------- B. Biological characteristics: 1. Phytoplankton - Sampling Date 04/24/74 07/11/74 09/18/74 Dominant Genera 1. 2. 3. 4. 5. 1. 2. 3. 4. 5. 1. 2. Pennate diatoms Dactylococcopsis sp. Schroederia sp. Centric diatoms Cryptomonas sp. Other genera Total Aphani zomenon sp. Melosira sp. Oocystis sp. Cyclotella sp. Anabaena sp. Other genera Total Aphanizomenon sp. Anabaena sp. Algal Units per ml 337 289 144 96 48 97 1,011 8,635 2,474 151 101 101 607 12,069 137,293 563 2. Chlorophyll ^ - Sampling Date 04/24/74 07/11/74 09/18/74 Total Station Number 1 2 1 2 1 2 137,856 Chlorophyll a (yg/D 22.8 12.1 183.6 57.8 441.9 177.9 ------- 0.200 0.250 0.250 0.200 2.208 2.208 3.208 3.208 44.4 44.0 48.7 57.0 C. Limiting Nutrient Study: 1. Autoclaved, filtered, and nutrient spiked - Ortho P Inorganic N Maximum yield Spike (mg/1) Cone, (mg/1) Cone, (mg/1) (mg/1-dry wt.) Control 0.050 P 0.050 P + 1.0 N 1.0 N 2. Discussion - The control yield of the assay alga, Selenastrum capri- cornutum, indicates that the potential primary productivity of Lake Byron was very high at the time the sample was col- lected (09/18/74). Also, the significant increase in yield with the addition of nitrogen alone indicates that the lake was limited by nitrogen at that time. Mote that the addition of phosphorus alone did not result in an increased yield. The lake data also indicate nitrogen limitation. The mean inorganic nitrogen/orthophosphorus ratios were 3/1 or less at all sampling times. ------- V. LITERATURE REVIEWED Ketelle, Martha 0., and Paul D. Uttormark, 1971. Problem lakes in the United States. EPA Water Poll. Contr. Res. Ser., Proj. 16010 EHR, Wash., DC. Murphey, Duane G., 1974. Personal communication (lake morphometry). SD Dept. of Env. Prot., Pierre. Petrie, Lester R., and L. Rodney Larson, 1966 (?). Quality of water in selected lakes of eastern South Dakota. Rept. of Inv. #1, SD Water Res. Comm., Pierre. Schmidt, Artwin E., 1967. Limnology of selected South Dakota lakes. MS thesis, SD St. U., Brookings. ------- 8 VI. APPENDICES ' APPENDIX A LAKE RANKINGS ------- LAKE DATA TO BE USED IN RANKINGS LAKE CODE LAKE NAME 4601. LAKE ALBERT 4602 ALVIN LAKE 4603 ANGOSTURA RESERVOIR 4604 BRANT LAKE 4605 LAKE BYRON 4606 CLEAR LAKE 4607 CLEAR LAKE 4608 COCHRANE LAKE 4609 COTTONWOOO LAKE 4610 DEERFIELD RESERVOIR 4611 ENEMY SWIM LAKE 4612 LAKE HERMAN 4613 ST JOHN LAKE 4614 LAKE KAMPESKA 4615 MADISON LAKE 4616 LAKE MITCHELL, 4617 LAKE NOROEN 4618 OAKWOOO LAKE EAST . 4619 OAKWOOO LAKE WEST 4620 PACTOLA RESERVOIR 4621 PICKEREL LAKE 4622 LAKE POINSETT 4623 LAKE RED IRON SOUTH 4624 RICHMOND LAKE 4625 ROY LAKE 4626 SAND LAKE 4627 SHERIDAN LAKE 4628 STOCKADE LAKE MEDIAN TOTAL P 0.321 0.067 0.019 0.194 0.443 0.027 1.400 0.037 0.685 0.033 0.037 0.340 0.348 0.220 0.250 0.099 0.256 0.146 0.181 0.011 0.049 0.115 0.042 0.187 0.034. 0.489 O.OS3 0.233 MEDIAN INORG N 0.170 0.970 0.160 0.130 0.370 0.075 0.270 0.150 0.265 0.080 0.085 - 0.155 0.080 0.105 0.090 0.085 0.165 0.175 0.135 0.070 0.095 0.315 0.110 0.150 0.070 0.110 0.105 0.150 500- MEAN SEC 4o9.111 442.833 423.333 432.833 488.333 '430.167 495.333 446.000 490.333 303.333 442.600 485.000 489.400 468.889 445.555 465.833 488.667 487.000 485.833 248.444 439.833 468.444 430.333 410.000 431.000 471.800 394.000 432.000 MEAN CHLORA 106.289 4.700 3.717 34.150 149.350 11.983 691.000 15.683 112.017 3.650 . 14.200 58.733 120.880 20.567 22.578 14.883 46.800 113.600 159.667 1.478 15.833 40.211 6.883 18.467 13.333 65.790 15.433 25.400 15- MIN DO 9.200 9.400 13.000 11.800 9.000 8.800 7.000 15.000 8.600 15.000 8.200 8.600 9.800 8.200 14.000 13.800 10.000 10.000 9.600 11.000 9.600 10.000 7.600 10.000 11.000 12.800 15.000 15.000 MEDIAN DISS ORTHO P 0.019 0.017 O.OOS 0.113 0.146 0.009 0.468 0.008 0.417 0.022 0.013 0.174 0.025 0.128 0.107 0.015 0.050 0.009 0.021 0.006 0.009 0.023 0.010 0.144 0.010 0.288 0.016 0.109 ------- DATA TO BE USED IN RANKINGS LA<£ CODE LAKE NAME 4629 LAKE VERMILLION 4630 WALL LAKE 4631 HAUBAr LAKE NORTH MEDIAN TOTAL P 0.211 0.194 0.093 MEDIAN INORG N 0.100 0.160 0.145 500- MEAN SEC 472.833 441.667 469.555 MEAN CHLOHA 100.800 55.267 127.033 15- MIN DO 9.200 7.400 11.400 MEDIAN DISS ORTHO 0.092 0.076 0.023 ------- PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF LAKES WITH HIGHER VALUES) LAKE CODE LAKE NAME 4601 LAKE ALBERT 4602 ALVIN LAKE 4603 ANGOSTURA RESERVOIR 4604 BRANT LAKE »4605 LAKE BYRON 4606 CLEAR LAKE 4607 CLEAR LAKE 4608 COCHRANE LAKE 4609 COTTONWOOD LAKE 4610 DEERFIELD RESERVOIR 4611 ENEMY SWIM LAKE 4612 LAKE HERMAN 4613 ST JOHN LAKE 4614 LAKE KAMPESKA 4615 MADISON LAKE 4616 LAKE MITCHELL \ 4617 LAKE NOROEN 4618 OAKWOOD LAKE EAST 4619 OAKWOOD LAKE WEST 4620 PACTOLA RESERVOIR 4621 PICKEREL LAKE 4622 LAKE POINSETT 4623 LAKE RED IRON SOUTH 4624 RICHMOND LAKE 4625 ROY LAKE 4626 SAND LAKE 4627 SHERIDAN LAKE 4628 STOCKADE LAKE MEDIAN TOTAL P 20 67 97 40 10 93 0 83 3 9Q 80 17 13 33^ 27 60 23 53 50 100 73 57 77 47 87 7 70 30 ( 6) ( 20) < 29) ( 12) ( 3) ( 28) ( 0) ( 25) ( 1) < 27) < 24) ( 5) < 4) < 10) < 8) < 18) ( 7) ( 16) < 15) ( 30) { 22) ( 17) < 23) ( 14) ( 26) ( 2) < 21) ( 9) MEDIAN INORG N 20 ( 6) 0 ( 0) 30 ( 9) 53 ( 16) 3 ( 1) 93 < 28) 10 ( 3) 40 ( 11) 13 ( 4) 88 .( 26) 82 ( 24) 33 ( 10) 88 ( 26) 65 ( 19) 77 ( 23) 82 ( 24) 23 < 7) 17 ( 5) 50 ( 15) 98 ( 29) 73 < 22) 7 ( 2) 58 ( 17) 40 < 11) 98 < 29) 58 ( 17) 65 < 19) 40 ( 11) 500- MEAN 10 57 87 70 17 83 0 50 3 97 60 27 7 40 53 47 13 20 23 100 67 43 80 90 77 33 93 73 SEC < 3! < 17) < 26) ( 21) ( 5) ( 25) ( 0) < 15) ( . 1) ( 29) ( 18) ( 8) ( 2) < 12) ( 16) ( 14) ( 4) ( 6) < 7) ( 30) ( 20) ( 13) ( 24) < 27) ( 23) ( 10) < 26) ( 22) MEAN CHLORA 23 ( 90 ( 93 < 47 ( 7 ( 83 ( 0 ( 67 ( 20 ( 97 ( 77 ( 33 ( 13 ( 57 < 53 ( .73 < 40 ( 17 ( 3 « 100 ( 63 ( 43 ( 87 ( 60 < 80 ( 30 ( 70 ( 50 ( 7) 27) 28) 14) 2) 25) 0) 20) 6) 29) 23) 10) 4) 17) 16) f 22) 12) 5) 1) 30) 19) 13) 26) 18) 24) 9) 21) 15) 15- MIN DO 68 ( 63 ( 20 ( 27 ( 73 ( 77 ( 100 < 5 ( 82 ( 5 ( 88 ( 82 ( 53 ( 88 ( 13 ( 17 < 45 ( 45 < 58 ( 35 ( 58 ( 45 ( 93 ( 45 ( 35 ( 23 ( 5 ( 5 ( 20) 19) 6) 8) 22) 23> 30) 0> 24) 0) 26) 24) 16) 26) 4) 5) 12) 12) 17) 10) 17) 12) 28) 12) 10) 7) 0) 0> MEDIAN DISS OWTHO P 60 ( 63 < 100 ( 23 ( 13 ( 90 < 0 ( 93 ( 3 ( 53 ( 73 ( 10 ( 43 ( 20 ( 30 < 70 ( 40 < 85 ( 57 i 97 ( 85 ( 47 ( 78 ( ir ( 78 ( 7 < 67 ( 27 ( 18) 19) 30) 7) 4) 27) 0) 28) 1) 16) 22) 3) 13) 6) 9) 21) 12) 25) 17) 29) 25) 14) 23) 5) 23) 2) 20) 8) INDEX NO 201 340 427 260 123 519 110 338 124 430 460 202 217 •303 253 349 184 237 241 530 419 242 473 299 455 158 370 225 ------- PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF LAKES WITH HIGHER VALUES) LAKE CODE LAKE NAME 4629 LAKE VERMILLION 4630 WALL LAKE 4631 WAUBAY LAKE NORTH MEDIAN TOTAL P 37 ( 43 ( 63 ( ID 13) 19) MEDIAN INORG N 70 I 27 i 47 i E 21) I 8) ( 14) 500- MEAN SEC 30 I 63 1 37 1 : 9> [ 19) : ID MEAN CHLORA 27 1 37 1 10 ( I 8) I ID I 3) 15- MIN DO 68 i 97 ' 30 i I 20) ( 29) ( 9) MEDIAN DISS ORTHO P 33 37 50 ( 10) ( 11) ( 15) INDEX NO 265 304 237 ------- LAKES RANKED BY INDEX NOS. RANK • LAKE CODE LAKE NAME INDEX NO 1 2 3 4 s 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 4620 4606 4623 4611 4625 4610 4603 4621 4627 4616 4602 4608 4630 4614 462.4 4629 4604 4615 4622 4619 4631 4618 4628 4613 4612 4601 4617 4626 PACTOLA RESERVOIR CLEAR LAKE LAKE RED IRON SOUTH ENEMY SWIM LAKE ROY LAKE DEERFIELD RESERVOIR ANGOSTURA RESERVOIR PICKEREL LAKE SHERIDAN LAKE LAKE MITCHELL ALVIN LAKE COCHRANE LAKE WALL LAKE LAKE KAMPESKA RICHMOND LAKE LAKE VERMILLIONy BRANT LAKE MADISON LAKE LAKE POINSETT OAKWOOD LAKE WEST WAUBAY LAKE NORTH OAKWOOD LAKE EAST STOCKADE LAKE ST JOHN LAKE LAKE HERMAN LAKE ALBERT LANE NORDEN SAND LAKE 530 519 473 460 455 430 427 419 370 349 340 338 304 3H3 299 265 260 253 242 241 237 237 225 217 202 201 184 158 ------- LAKES RANKED BY INDEX NOS. RANK LAKE CODE LAKE NAME INDEX NO 29 4609 COTTONWOOD LAKE 30 4605 LAKE BYRON 123 31 4607 CLEAR LAKE 110 ------- APPENDIX B CONVERSION FACTORS ------- CONVERSION FACTORS Hectares x 2.471 = acres Kilometers x 0.6214 = miles Meters x 3.281 = feet Cubic meters x 8.107 x 10"4 = acre/feet Square kilometers x 0.3861 = square miles Cubic meters/sec x 35.315 = cubic feet/sec Centimeters x 0.3937 = inches Kilograms x 2.205 = pounds Kilograms/square kilometer x 5.711 - Ibs/square mile ------- APPENDIX C PHYSICAL and CHEMICAL DATA ------- STORE! RETRIEVAL DATE 76/05/03 460501 ^4 34 09.0 096 07 07.0 LAKE BYRON 4600S SOUTn DAKOTA 090691 11EPALES 2111202 0005 FEET DEPTH CLASS 00 DATE FROM TO 74/04/24 74/07/11 74/09/18 DATE FROM TO 74/04/24 74/07/11 74/09/18 TIME DEPTH OF DAY FEET 13 50 0000 11 10 0000 11 10 0002 14 25 0000 TIME DEPTH OF DAY FEET 13 SO 0000 11 10 0000 11 10 0001 11 10 0002 14 ?5 0000 14 25 0002 00010 WATER TEMP CENT 10.2 24.8 24. d 19.2 00665 PHOS-TOT MG/L P 0.379 0.443 0.424 0.792 00300 00 MG/L 9.6 6.0 6.2 10.2 32217 CHLRPHYL A UG/L 22.8 183.6 441.9 00077 TRANSP SECCHI INCHES 5 8 12 00031 INCOT LT REMMNG PERCENT 1.0 1.0 00094 CNOUCTVY FIELD MICROMHO 1147 2054 2054 2134 00400 PH su 8.10 9.00 8.90 8.93 00410 T ALK CAC03 MG/L 246 286 286 470 00610 NH3-iN TOTAL Mt>/L 0.570 0.210 0.190 0.070 00625 TOT KJEL N MG/L 2.400 3.200 3.400 1.100 00630 N02t»N03 N-TOTAL MG/L 0.190 0.180 0.190 0.030 00671 PHOS-UIS ORTHO MG/L P 0.130 0.117 0.134 0.252 ------- STORET RETRIEVAL DATE 76/05/03 46050? 44 34 10.0 098 08 bl.O 3 LAKE BYRON 46005 SOUTH DAKOTA 090691 11EPALES 2111202 0006 FEET DEPTH CLASS 00 DATE FROM TO 74/04/24 74/07/11 74/09/18 DATE FROM TO 74/04/24 74/07/11 74/09/18 TIME DEPTH OF DAY FEET 14 05 0000 10 55 0000 10 55 0003 14 10 0000 14 10 0003 TIME DEPTH OF DAY FEET 14 05 0000 10 55 0000 10 55 0003 14 10 0000 14 10 0002 14 10 0003 00010 WATER TEMP CENT 10.6 24.3 24.3 17.9 17.8 00665 PHOS-TOT MG/L P 0.710 0.233 0.324 0.458 0.604 00300 DO MG/L 9.8 6.4 6.4 14.8 13.6 32217 CHLRPHYL A UG/L 12.1 57.8 177.9 00077 TRANSP SECCHI INCHES 9 18 18 00031 INCDT LT REMNING PERCENT 1.0 1.0 00094 CNDUCTVY FIELD MICROMHO 1162 1941 1940 1947 1942 00400 PH SU 8.10 9.00 9.00 8.90 6.89 00410 T ALK CAC03 MG/L 250 300 306 420 450 00610 NH3-N TOTAL Mo/L 0.400 0.220 0.210 0.060 0.080 00b25 TOT KJEL N MG/L 2.700 3.000 2.900 1.000 0.900 00630 N02&N03 N-TOTAL MG/L 0.340 0.150 0.130 0.020 0.020 00671 PnOS-DIS ORTHO MG/L P 0.319 0.182 0.188 0.146 0.131 ------- APPENDIX D TRIBUTARY DATA ------- STORE! RETRIEVAL DATE 76/05/04 00630 DATE TIME DEPTH N02&N03 FROM OF N-TOTAL TO DAY FEET MG/L 75/04/13 13 25 75/05/18 13 00 75/06/15 14 35 0.830 0.010 0.005 00625 TOT KJEL N 2.000 1.850 2.300 00610 NH3-N TOTAL MG/L 0.660 0.045 0.145 00671 PHOS-DIS ORTHO MG/L P 0.350 0.045 0.040 46G5ril 44 34 50.0 098 09 30.0 4 FOSTER CRE..K 46 7.5 LAKE BYhiU'N T/BfRON LAKt 090691 bROb ON S£C RD 1 Ml N OF CONNORS LAKE 11EPALES 2111204 0000 FEtT DEPTH CLASS 00 00665 OHOS-TOT MG/L P 0.420 0.160 0.150 ------- STORET RETRIEVAL DATE 76/05/04 00630 DATE TIME DEPTH N02&N03 FROM OF N-TOTAL TO DAY FEET MG/L 4605CI 44 35 20.0 098 06 50.0 4 UNNAMED CREEK 46 7.b LK 3Y*ON St LAKE ON SEC RO 5.2 11EPALES oooo FEET DEPTH 090691 Ml E OF JCT ri HWY 37 2111304 CLASS 00 00625 TOT KJEL N- MG/L 00610 NH3-N TOTAL MG/L 00671 PriOS-OIS ORTrtO MG/L P 00665 PHOS-TOT MG/L P 75/04/13 13 35 1.880 1.150 0.113 0.300 0.340 ------- TRIBUTARY FLOW INFORMATION FOR SOUTH DAKOTA 05/03/76 LAKE CODE 4605 BYRON TOTAL DRAINAGE AREA OF LAKE(so KM» SUB-DRAINAGE TRIBUTARY AREA(SO KM) JAN FE8 774.4 MAR APR MAY NORMALIZED FLO*S(CMS> JUN JUL AUG SEP OCT NOV DEC MEAN 4605A1 4605B1 4605ZZ 774.4 626.8 147.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.057 0.0 0.327 0.283 0.028 0.142 0.142 0.0 0.142 0.057 0.026 0.057 0.028 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.047 0.005 SUMMARY TOTAL DRAINAGE AREA OF LAKE = 774.4 SUM OF SUB-DRAINAGE AREAS = 774.4 TOTAL FLOW IN TOTAL FLOW OUT 0.62 0.57 MEAN MONTHLY FLOWS AND DAILY FLOwS(CMS) TRIBUTARY MONTH YEAR MEAN FLOW DAY 4605A1 460SB1 4605ZZ 10 11 12 1 2 3 4 5 6 7 a 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 a 9 74 74 74 75 75 75 75 75 75 75 75 75 74 74 74 75 75 75 75 75 75 75 75 75 74 74 74 75 75 75 75 75 75 75 75 75 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.003 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.028 0.0 0.0 0.0 0.0 0.0 12 3 8 19 9 2 13 17 15 17 17 13 12 3 8 19 9 2 13 18 15 17 17 13 FLOW DAY 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.014 0.0 0.0 0.0 0.0 FLOW DAY FLOW ------- |