1 STATION NAME: Mississippi River at Fridley, MN STATION NUMBER: UM-859 DRAINAGE AREA: 19,491 SQUARE MILES CONSTITUENT: Total Nitrogen LOAD ESTIMATES FOR 19670101 TO 19961231 TOTAL NUMBER OF OBS.: 144 NUMBER OF UNCENSORED OBS.: 144 CALIBRATION DATA PERIOD OF RECORD: 1979 TO 1994 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 10564. 958. 3490. 4370. 8030. 14675. 23050. 44400. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 9360. 728. 2990. 4400. 6860. 11600. 19300. 72300. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 1.7727E+01 + 1.8321E+00 LN(FLOW) - 4.1834E-02 LN(FLOW)**2 + 1.1265E-01 SIN(DECTIME) + 3.0019E-04 COS(DECTIME) + 7.9064E-03 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.054 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 22.53 ( 25 DF) PROBABILITY LEVEL = 0.605 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 1.7727E+01 + 1.8321E+00 LN(FLOW) - 4.1834E-02 LN(FLOW)**2 + 1.1265E-01 SIN(DECTIME) + 3.0019E-04 COS(DECTIME) + 7.9064E-03 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.054 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = - 1.6794E+01 + 1.9531E+00 LN(FLOW) - 4.9002E-02 LN(FLOW)**2 + 9.1108E-02 SIN(DECTIME) - 1.0827E-02 COS(DECTIME) + 7.1731E-03 DECTIME NOTE: AIKAIKE INFORMATION CRITERION AND SCHWARZ POSTERIOR PROBABILITY CRITERIA DID NOT SELECT SAME BEST FIT MODEL. MODEL SELECTED ON BASIS OF AIKAIKE INFORMATION CRITERION. 1 STATION: Mississippi River at Fridley, MN (CONTINUED) STATION NUMBER: UM-859 LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 38. 67. 37. 28. 21. STD DEV LOAD (TON/DAY) 1. 3. 1. 1. 1. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 1. 1. 1. 2. 2. 2. 2. 2. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 2. 16. 27. 48. 84. 107. 170. 279. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 38. 67. 37. 28. 21. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 1. 1. 1. 2. 2. 2. 2. 2. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 2. 16. 27. 48. 84. 107. 170. 282. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 38. 65. 37. 28. 21. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 1. 1. 1. 2. 2. 2. 2. 2. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 2. 16. 27. 48. 83. 105. 163. 266. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 40. 1 STATION NAME: Mississippi River at Fridley, MN STATION NUMBER: UM-859 DRAINAGE AREA: 19,491 SQUARE MILES CONSTITUENT: Nitrate + Nitrite LOAD ESTIMATES FOR 19670101 TO 19961231 TOTAL NUMBER OF OBS.: 186 NUMBER OF UNCENSORED OBS.: 174 CALIBRATION DATA PERIOD OF RECORD: 1976 TO 1996 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 9904. 934. 2826. 4210. 7175. 13825. 22300. 44400. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 9360. 728. 2990. 4400. 6860. 11600. 19300. 72300. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 3.2258E+01 + 7.5787E+00 LN(FLOW) - 3.2435E-01 LN(FLOW)**2 + 1.9425E-01 SIN(DECTIME) + 1.0481E+00 COS(DECTIME) ESTIMATED RESIDUAL VARIANCE = 1.036 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 40.98 ( 34 DF) PROBABILITY LEVEL = 0.191 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 2.6812E+01 + 6.4294E+00 LN(FLOW) - 2.6422E-01 LN(FLOW)**2 + 2.0428E-01 SIN(DECTIME) + 9.8265E-01 COS(DECTIME) ESTIMATED RESIDUAL VARIANCE = 0.994 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = - 2.6608E+01 + 6.4743E+00 LN(FLOW) - 2.7139E-01 LN(FLOW)**2 + 2.8921E-01 SIN(DECTIME) + 8.4938E-01 COS(DECTIME) 1 STATION: Mississippi River at Fridley, MN (CONTINUED) STATION NUMBER: UM-859 LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 18. 29. 7. 17. 18. STD DEV LOAD (TON/DAY) 2. 5. 1. 3. 3. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 1. 1. 1. 2. 2. 2. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 4. 11. 24. 43. 57. 88. 129. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 16. 28. 7. 15. 16. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 1. 1. 1. 1. 2. 2. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 4. 10. 22. 39. 52. 85. 134. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 15. 27. 7. 12. 14. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 0. 1. 1. 1. 1. 1. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 4. 10. 21. 34. 48. 76. 116. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 10. 1 STATION NAME: Mississippi River at Fridley, MN STATION NUMBER: UM-859 DRAINAGE AREA: 19,491 SQUARE MILES CONSTITUENT: Total Ammonia LOAD ESTIMATES FOR 19670101 TO 19961231 TOTAL NUMBER OF OBS.: 261 NUMBER OF UNCENSORED OBS.: 166 CALIBRATION DATA PERIOD OF RECORD: 1967 TO 1996 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 9411. 934. 2712. 4175. 6390. 11700. 20080. 64000. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 9360. 728. 2990. 4400. 6860. 11600. 19300. 72300. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 6.9048E+01 + 9.6273E-01 LN(FLOW) + 3.4017E-01 SIN(DECTIME) + 3.8747E-01 COS(DECTIME) - 3.4961E-02 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.560 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 112.17 ( 49 DF) PROBABILITY LEVEL = 0.001 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 1.1561E+02 + 9.4412E-01 LN(FLOW) + 3.0148E-01 SIN(DECTIME) + 2.9113E-01 COS(DECTIME) - 5.8270E-02 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.507 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = + 1.2500E+02 + 9.3492E-01 LN(FLOW) + 1.9942E-01 SIN(DECTIME) + 1.4420E-01 COS(DECTIME) - 6.2950E-02 DECTIME 1 STATION: Mississippi River at Fridley, MN (CONTINUED) STATION NUMBER: UM-859 LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 3.70 6.80 2.40 2.40 3.20 STD DEV LOAD (TON/DAY) 0.25 0.63 0.18 0.23 0.29 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 0. 0. 0. 0. 0. 0. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 2. 3. 4. 7. 10. 18. 49. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 5.10 9.40 3.50 3.30 4.00 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 0. 0. 0. 0. 1. 1. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 2. 4. 6. 10. 15. 28. 81. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 5.10 9.10 4.20 3.50 3.60 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 0. 0. 0. 0. 1. 1. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 2. 4. 6. 10. 16. 28. 79. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 2.5 - 3.9 1 STATION NAME: Mississippi River at Fridley, MN STATION NUMBER: UM-859 DRAINAGE AREA: 19,491 SQUARE MILES CONSTITUENT: Total Phosphorus LOAD ESTIMATES FOR 19670101 TO 19961231 TOTAL NUMBER OF OBS.: 250 NUMBER OF UNCENSORED OBS.: 249 CALIBRATION DATA PERIOD OF RECORD: 1967 TO 1994 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 9292. 934. 2592. 4100. 6300. 11600. 19120. 64000. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 9360. 728. 2990. 4400. 6860. 11600. 19300. 72300. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 3.5372E+01 + 1.0905E+00 LN(FLOW) - 6.2111E-03 SIN(DECTIME) - 3.7204E-01 COS(DECTIME) - 1.8562E-02 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.142 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 57.42 ( 47 DF) PROBABILITY LEVEL = 0.142 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 3.5259E+01 + 1.0898E+00 LN(FLOW) - 5.5394E-03 SIN(DECTIME) - 3.7177E-01 COS(DECTIME) - 1.8502E-02 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.141 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = + 3.5184E+01 + 1.0583E+00 LN(FLOW) - 3.3367E-02 SIN(DECTIME) - 3.6163E-01 COS(DECTIME) - 1.8329E-02 DECTIME 1 STATION: Mississippi River at Fridley, MN (CONTINUED) STATION NUMBER: UM-859 LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 3.20 5.40 4.00 2.10 1.10 STD DEV LOAD (TON/DAY) 0.10 0.25 0.15 0.10 0.05 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 0. 0. 0. 0. 0. 0. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 1. 2. 4. 7. 10. 16. 35. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 3.20 5.40 4.00 2.10 1.10 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 0. 0. 0. 0. 0. 0. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 1. 2. 4. 7. 10. 16. 35. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 3.10 5.10 3.90 2.10 1.10 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 0. 0. 0. 0. 0. 0. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 1. 2. 4. 7. 10. 15. 32. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 3.3 1 STATION NAME: Mississippi River at Fridley, MN STATION NUMBER: UM-859 DRAINAGE AREA: 19,491 SQUARE MILES CONSTITUENT: Total Suspended Solids LOAD ESTIMATES FOR 19670101 TO 19961231 TOTAL NUMBER OF OBS.: 251 NUMBER OF UNCENSORED OBS.: 249 CALIBRATION DATA PERIOD OF RECORD: 1967 TO 1994 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 9281. 934. 2604. 4100. 6300. 11600. 19040. 64000. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 9360. 728. 2990. 4400. 6860. 11600. 19300. 72300. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 1.3881E+00 + 1.2973E+00 LN(FLOW) - 2.2030E-01 SIN(DECTIME) - 8.9394E-01 COS(DECTIME) ESTIMATED RESIDUAL VARIANCE = 0.347 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 89.48 ( 47 DF) PROBABILITY LEVEL = 0.001 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 1.4085E+00 + 1.2952E+00 LN(FLOW) - 2.1874E-01 SIN(DECTIME) - 8.9220E-01 COS(DECTIME) ESTIMATED RESIDUAL VARIANCE = 0.345 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = + 2.0526E+00 + 1.2255E+00 LN(FLOW) - 1.5284E-01 SIN(DECTIME) - 8.7606E-01 COS(DECTIME) 1 STATION: Mississippi River at Fridley, MN (CONTINUED) STATION NUMBER: UM-859 LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 500. 780. 840. 290. 75. STD DEV LOAD (TON/DAY) 28. 57. 52. 22. 5. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 3. 6. 13. 24. 31. 35. 42. 52. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 6. 91. 215. 660. 1334. 1809. 3169. 6270. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 500. 790. 850. 290. 76. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 3. 6. 13. 24. 32. 35. 42. 53. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 6. 92. 216. 665. 1343. 1823. 3190. 6313. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 480. 770. 800. 270. 79. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 3. 6. 13. 24. 30. 33. 38. 45. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 7. 95. 216. 649. 1268. 1718. 2914. 5345. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 500. 1 STATION NAME: Mississippi River at Fridley, MN STATION NUMBER: UM-859 DRAINAGE AREA: 19,491 SQUARE MILES CONSTITUENT: Total Chloride LOAD ESTIMATES FOR 19670101 TO 19771231 TOTAL NUMBER OF OBS.: 90 NUMBER OF UNCENSORED OBS.: 88 CALIBRATION DATA PERIOD OF RECORD: 1967 TO 1977 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 7136. 934. 1555. 2860. 5120. 7243. 12600. 64000. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 8724. 728. 2400. 4100. 5995. 10000. 19400. 72300. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 6.5160E+00 + 6.7538E-01 LN(FLOW) ESTIMATED RESIDUAL VARIANCE = 0.280 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 49.55 ( 15 DF) PROBABILITY LEVEL = 0.001 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 6.5112E+00 + 6.7627E-01 LN(FLOW) ESTIMATED RESIDUAL VARIANCE = 0.274 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = + 6.0063E+00 + 7.3092E-01 LN(FLOW) 1 STATION: Mississippi River at Fridley, MN (CONTINUED) STATION NUMBER: UM-859 LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 170. 240. 160. 140. 120. STD DEV LOAD (TON/DAY) 12. 24. 12. 9. 7. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 4. 7. 9. 10. 11. 13. 15. 17. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 33. 107. 138. 195. 304. 360. 497. 729. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 170. 240. 160. 140. 120. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 4. 7. 9. 10. 11. 13. 15. 17. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 33. 107. 138. 195. 305. 362. 502. 742. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 170. 260. 170. 140. 120. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 4. 8. 9. 10. 11. 13. 14. 15. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 30. 106. 139. 202. 329. 396. 563. 860. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 170.