1 STATION NAME: Mississippi River below Alton, IL STATION NUMBER: 05587550 DRAINAGE AREA: 171500.0 SQUARE MILES CONSTITUENT: Total Nitrogen LOAD ESTIMATES FOR 19750101 TO 19881231 TOTAL NUMBER OF OBS.: 119 NUMBER OF UNCENSORED OBS.: 119 CALIBRATION DATA PERIOD OF RECORD: 1975 TO 1989 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 113938. 19100. 35600. 58600. 94400. 159000. 222000. 406000. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 119093. 14200. 38100. 58875. 93700. 163000. 241000. 452000. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 7.1408E-01 + 1.3228E+00 LN(FLOW) + 2.0002E-01 SIN(DECTIME) + 9.9398E-02 COS(DECTIME) ESTIMATED RESIDUAL VARIANCE = 0.124 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 15.90 ( 20 DF) PROBABILITY LEVEL = 0.723 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 7.1408E-01 + 1.3228E+00 LN(FLOW) + 2.0002E-01 SIN(DECTIME) + 9.9398E-02 COS(DECTIME) ESTIMATED RESIDUAL VARIANCE = 0.124 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = - 3.6244E-01 + 1.2900E+00 LN(FLOW) + 2.3609E-01 SIN(DECTIME) + 7.9144E-02 COS(DECTIME) 1 STATION: Mississippi River below Alton, IL (CONTINUED) STATION NUMBER: 05587550 LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 1500. 3000. 1200. 880. 1100. STD DEV LOAD (TON/DAY) 68. 180. 63. 56. 60. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 2. 3. 4. 5. 6. 6. 7. 8. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 64. 518. 966. 2024. 3800. 4609. 6901. 9345. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 1500. 3000. 1200. 880. 1100. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 2. 3. 4. 5. 6. 6. 7. 8. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 65. 518. 966. 2023. 3801. 4614. 6909. 9362. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 1500. 3100. 1200. 840. 1100. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 2. 3. 4. 5. 6. 6. 7. 8. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 67. 518. 964. 2010. 3746. 4593. 6871. 9237. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 1500. 1 STATION NAME: Mississippi River below Alton, IL STATION NUMBER: 05587550 DRAINAGE AREA: 171500.0 SQUARE MILES CONSTITUENT: Total Nitrate + Nitrite LOAD ESTIMATES FOR 19750101 TO 19881231 TOTAL NUMBER OF OBS.: 123 NUMBER OF UNCENSORED OBS.: 123 CALIBRATION DATA PERIOD OF RECORD: 1975 TO 1989 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 114879. 19100. 36280. 59100. 94650. 159500. 221200. 406000. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 119093. 14200. 38100. 58875. 93700. 163000. 241000. 452000. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 3.0002E+00 + 1.4742E+00 LN(FLOW) + 1.9286E-01 SIN(DECTIME) + 1.0739E-01 COS(DECTIME) ESTIMATED RESIDUAL VARIANCE = 0.289 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 17.82 ( 21 DF) PROBABILITY LEVEL = 0.660 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 3.0002E+00 + 1.4742E+00 LN(FLOW) + 1.9286E-01 SIN(DECTIME) + 1.0739E-01 COS(DECTIME) ESTIMATED RESIDUAL VARIANCE = 0.289 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = - 2.4774E+00 + 1.4305E+00 LN(FLOW) + 1.8434E-01 SIN(DECTIME) + 1.4336E-01 COS(DECTIME) 1 STATION: Mississippi River below Alton, IL (CONTINUED) STATION NUMBER: 05587550 LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 1100. 2100. 760. 580. 700. STD DEV LOAD (TON/DAY) 74. 200. 64. 56. 60. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 1. 2. 2. 3. 4. 5. 5. 6. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 30. 302. 604. 1366. 2718. 3366. 5234. 7318. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 1000. 2100. 760. 580. 700. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 1. 2. 2. 3. 4. 5. 5. 6. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 30. 300. 600. 1357. 2700. 3347. 5238. 7298. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 1000. 2000. 720. 580. 710. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 1. 2. 2. 3. 4. 4. 5. 6. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 32. 310. 606. 1314. 2562. 3149. 4963. 6712. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 940. 1 STATION NAME: Mississippi River below Alton, IL STATION NUMBER: 05587550 DRAINAGE AREA: 171500.0 SQUARE MILES CONSTITUENT: Dissolved Ammonia LOAD ESTIMATES FOR 19750101 TO 19881231 TOTAL NUMBER OF OBS.: 71 NUMBER OF UNCENSORED OBS.: 66 CALIBRATION DATA PERIOD OF RECORD: 1979 TO 1989 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 116855. 25300. 39120. 72300. 103000. 153000. 217400. 345000. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 119093. 14200. 38100. 58875. 93700. 163000. 241000. 452000. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 1.2019E+02 + 1.1537E+00 LN(FLOW) + 5.8681E-01 SIN(DECTIME) + 6.9697E-01 COS(DECTIME) - 6.1883E-02 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.972 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 12.92 ( 11 DF) PROBABILITY LEVEL = 0.299 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 1.1865E+02 + 1.1474E+00 LN(FLOW) + 5.7129E-01 SIN(DECTIME) + 6.4969E-01 COS(DECTIME) - 6.1049E-02 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.952 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = + 1.2152E+02 + 1.1446E+00 LN(FLOW) + 5.1593E-01 SIN(DECTIME) + 7.9686E-01 COS(DECTIME) - 6.2505E-02 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 below Alton, IL (CONTINUED) STATION NUMBER: 05587550 LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 62. 130. 23. 26. 69. STD DEV LOAD (TON/DAY) 12. 32. 5. 6. 14. 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. 1. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 2. 17. 40. 74. 159. 209. 316. 398. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 65. 130. 25. 28. 71. 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 3. 19. 42. 77. 167. 217. 328. 420. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 65. 130. 22. 31. 79. 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 2. 19. 43. 79. 163. 214. 324. 400. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 52. - 53. 1 STATION NAME: Mississippi River below Alton, IL STATION NUMBER: 05587550 DRAINAGE AREA: 171500.0 SQUARE MILES CONSTITUENT: Total Phosphorus LOAD ESTIMATES FOR 19750101 TO 19881231 TOTAL NUMBER OF OBS.: 125 NUMBER OF UNCENSORED OBS.: 125 CALIBRATION DATA PERIOD OF RECORD: 1975 TO 1989 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 115058. 19100. 36620. 58850. 94650. 159750. 220800. 406000. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 119093. 14200. 38100. 58875. 93700. 163000. 241000. 452000. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 6.1362E+01 + 1.2274E+00 LN(FLOW) - 3.2178E-02 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.174 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 34.29 ( 22 DF) PROBABILITY LEVEL = 0.046 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 6.1362E+01 + 1.2274E+00 LN(FLOW) - 3.2178E-02 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.174 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = + 6.1674E+01 + 1.3017E+00 LN(FLOW) - 3.2762E-02 DECTIME 1 STATION: Mississippi River below Alton, IL (CONTINUED) STATION NUMBER: 05587550 LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 87. 150. 78. 61. 57. STD DEV LOAD (TON/DAY) 4. 9. 4. 3. 2. 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 7. 35. 60. 121. 191. 238. 336. 462. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 88. 150. 79. 61. 58. 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 7. 35. 60. 122. 193. 240. 339. 467. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 92. 160. 81. 62. 59. 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 6. 34. 61. 127. 206. 259. 375. 527. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 92. 1 STATION NAME: Mississippi River below Alton, IL STATION NUMBER: 05587550 DRAINAGE AREA: 171500.0 SQUARE MILES CONSTITUENT: Soluble Reactive Phosphorus (measured as Dissolved Orthophosphate) LOAD ESTIMATES FOR 19750101 TO 19881231 TOTAL NUMBER OF OBS.: 48 NUMBER OF UNCENSORED OBS.: 47 CALIBRATION DATA PERIOD OF RECORD: 1981 TO 1989 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 121229. 25300. 39060. 70050. 104000. 157875. 224850. 345000. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 119093. 14200. 38100. 58875. 93700. 163000. 241000. 452000. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 4.6544E+00 + 1.3177E+00 LN(FLOW) - 3.2255E-01 SIN(DECTIME) + 9.8754E-03 COS(DECTIME) ESTIMATED RESIDUAL VARIANCE = 0.365 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 11.76 ( 6 DF) PROBABILITY LEVEL = 0.068 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 4.6271E+00 + 1.3157E+00 LN(FLOW) - 3.1581E-01 SIN(DECTIME) + 1.3281E-02 COS(DECTIME) ESTIMATED RESIDUAL VARIANCE = 0.358 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = - 2.6909E+00 + 1.1508E+00 LN(FLOW) - 2.4883E-01 SIN(DECTIME) - 8.9127E-02 COS(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 below Alton, IL (CONTINUED) STATION NUMBER: 05587550 LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 28. 40. 27. 28. 18. STD DEV LOAD (TON/DAY) 3. 7. 4. 4. 3. 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 2. 11. 21. 41. 58. 73. 103. 193. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 28. 40. 27. 27. 19. 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 2. 11. 20. 40. 58. 73. 104. 196. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 27. 38. 28. 25. 17. 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 2. 12. 21. 39. 55. 66. 88. 145. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 28. - 29. 1 STATION NAME: Mississippi River below Alton, IL STATION NUMBER: 05587550 DRAINAGE AREA: 171500.0 SQUARE MILES CONSTITUENT: Total Suspended Sediment LOAD ESTIMATES FOR 19750101 TO 19881231 TOTAL NUMBER OF OBS.: 112 NUMBER OF UNCENSORED OBS.: 112 CALIBRATION DATA PERIOD OF RECORD: 1975 TO 1989 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 111645. 19100. 37510. 57000. 91250. 153000. 216100. 406000. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 119093. 14200. 38100. 58875. 93700. 163000. 241000. 452000. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 1.8337E+02 + 2.0733E+00 LN(FLOW) - 9.5530E-02 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.689 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 20.51 ( 19 DF) PROBABILITY LEVEL = 0.365 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 1.8337E+02 + 2.0733E+00 LN(FLOW) - 9.5530E-02 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.689 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = + 1.5733E+02 + 2.0295E+00 LN(FLOW) - 8.2132E-02 DECTIME WARNING: MAXIMUM PREDICTED CONCENTRATION EXCEEDS 100000 UG/L 1 STATION: Mississippi River below Alton, IL (CONTINUED) STATION NUMBER: 05587550 LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 93000. 210000. 71000. 46000. 43000. STD DEV LOAD (TON/DAY) 12000. 32000. 8000. 4900. 4600. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 14. 84. 141. 267. 407. 538. 795. 1045. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 751. 13504. 34007. 115203. 248806. 376947. 680365. 1211379. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 94000. 210000. 72000. 46000. 43000. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 14. 85. 141. 268. 410. 543. 806. 1064. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 771. 13586. 34070. 115943. 250608. 381137. 690917. 1234348. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 91000. 200000. 70000. 46000. 43000. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 17. 88. 142. 263. 391. 502. 734. 929. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 914. 14080. 34355. 114855. 240160. 361311. 637781. 1120813. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 86000. 1 STATION NAME: Mississippi River below Alton, IL STATION NUMBER: 05587550 DRAINAGE AREA: 171500.0 SQUARE MILES CONSTITUENT: Dissolved Chloride LOAD ESTIMATES FOR 19750101 TO 19881231 TOTAL NUMBER OF OBS.: 125 NUMBER OF UNCENSORED OBS.: 125 CALIBRATION DATA PERIOD OF RECORD: 1975 TO 1989 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 114219. 19100. 36620. 57450. 94400. 159750. 220800. 406000. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 119093. 14200. 38100. 58875. 93700. 163000. 241000. 452000. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 1.1933E+01 + 7.4163E-01 LN(FLOW) + 1.1504E-01 SIN(DECTIME) + 7.7381E-02 COS(DECTIME) + 9.9218E-03 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.063 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 26.01 ( 22 DF) PROBABILITY LEVEL = 0.251 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 1.1933E+01 + 7.4163E-01 LN(FLOW) + 1.1504E-01 SIN(DECTIME) + 7.7381E-02 COS(DECTIME) + 9.9218E-03 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.063 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = - 1.1981E+01 + 7.4520E-01 LN(FLOW) + 1.1049E-01 SIN(DECTIME) + 1.0559E-01 COS(DECTIME) + 9.9228E-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 below Alton, IL (CONTINUED) STATION NUMBER: 05587550 LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 6700. 10000. 5700. 5000. 5700. STD DEV LOAD (TON/DAY) 180. 410. 210. 200. 220. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 15. 19. 22. 26. 29. 31. 34. 39. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 1163. 3976. 5718. 8613. 12283. 13653. 17204. 19752. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 6700. 10000. 5700. 5000. 5700. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 15. 19. 22. 26. 29. 31. 34. 39. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 1164. 3972. 5713. 8608. 12279. 13652. 17199. 19756. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 6700. 10000. 5600. 5100. 5900. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 15. 19. 22. 26. 29. 31. 34. 40. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 1146. 3991. 5763. 8587. 12276. 13660. 17309. 20024. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 6600. 1 STATION NAME: Mississippi River below Alton, IL STATION NUMBER: 05587550 DRAINAGE AREA: 171500.0 SQUARE MILES CONSTITUENT: Dissolved Silica (The values represented here are for SiO2. Values for loads and concentrations have been converted to represent elemental Si. Si = 0.46744 * SiO2 ) LOAD ESTIMATES FOR 19750101 TO 19881231 TOTAL NUMBER OF OBS.: 125 NUMBER OF UNCENSORED OBS.: 124 CALIBRATION DATA PERIOD OF RECORD: 1975 TO 1989 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 114219. 19100. 36620. 57450. 94400. 159750. 220800. 406000. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 119093. 14200. 38100. 58875. 93700. 163000. 241000. 452000. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 1.0088E+01 + 1.0436E+01 LN(FLOW) - 3.7230E-01 LN(FLOW)**2 - 5.3558E-02 SIN(DECTIME) + 5.0877E-01 COS(DECTIME) - 3.3278E-02 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.644 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 45.80 ( 22 DF) PROBABILITY LEVEL = 0.002 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 8.6694E+00 + 1.0476E+01 LN(FLOW) - 3.7418E-01 LN(FLOW)**2 - 5.0414E-02 SIN(DECTIME) + 5.0598E-01 COS(DECTIME) - 3.2665E-02 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.639 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = + 8.7617E+00 + 1.0497E+01 LN(FLOW) - 3.7627E-01 LN(FLOW)**2 - 1.3422E-01 SIN(DECTIME) + 5.0328E-01 COS(DECTIME) - 3.2648E-02 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 below Alton, IL (CONTINUED) STATION NUMBER: 05587550 LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 2900. 5000. 1700. 2300. 2600. STD DEV LOAD (TON/DAY) 340. 800. 220. 350. 360. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 4. 7. 10. 13. 14. 18. 20. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 12. 707. 1981. 4139. 7241. 9295. 12508. 19998. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 2800. 4800. 1700. 2200. 2500. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 4. 7. 10. 12. 14. 17. 19. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 12. 678. 1900. 3957. 6938. 8947. 12303. 20066. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 2700. 4400. 1700. 2400. 2500. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 4. 7. 9. 12. 13. 17. 19. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 14. 692. 1894. 3842. 6397. 8188. 11526. 19742. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 2400.