1 STATION NAME: Wapsipinicon River near confluence with Mississippi River STATION NUMBER: WP02.6M DRAINAGE AREA: 2519.0 SQUARE MILES CONSTITUENT: Total Nitrogen LOAD ESTIMATES FOR 19930101 TO 19970930 TOTAL NUMBER OF OBS.: 110 NUMBER OF UNCENSORED OBS.: 110 CALIBRATION DATA PERIOD OF RECORD: 1993 TO 1997 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 2341. 265. 398. 699. 1206. 2760. 5273. 19566. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 2564. 178. 436. 753. 1265. 2951. 6719. 23242. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 1.5071E+02 + 1.3917E+00 LN(FLOW) + 8.3863E-02 SIN(DECTIME) + 2.5366E-01 COS(DECTIME) + 7.5729E-02 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.192 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 17.42 ( 19 DF) PROBABILITY LEVEL = 0.561 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 1.5071E+02 + 1.3917E+00 LN(FLOW) + 8.3863E-02 SIN(DECTIME) + 2.5366E-01 COS(DECTIME) + 7.5729E-02 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.192 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = - 1.4898E+02 + 1.5142E+00 LN(FLOW) + 7.0489E-02 SIN(DECTIME) + 3.2851E-01 COS(DECTIME) + 7.4450E-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. WARNING: THE MAXIMUM PREDICTED CONCENTRATION EXCEEDS THE MAXIMUM OBSERVED SAMPLE CONCENTRATION. 1 STATION: Wapsipinicon River near confluence with Mississippi River (CONTINUED) STATION NUMBER: WP02.6M LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 53. 89. 69. 20. 28. STD DEV LOAD (TON/DAY) 4. 8. 7. 2. 3. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 3. 4. 5. 7. 9. 10. 12. 20. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 1. 8. 18. 53. 151. 235. 497. 943. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 53. 89. 68. 20. 28. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 3. 4. 5. 7. 9. 10. 12. 20. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 1. 8. 18. 53. 150. 234. 496. 949. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 62. 100. 81. 23. 33. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 2. 4. 5. 7. 10. 12. 16. 28. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 1. 8. 18. 57. 175. 284. 645. 1351. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 45. 1 STATION NAME: Wapsipinicon River near confluence with Mississippi River STATION NUMBER: WP02.6M DRAINAGE AREA: 2519.0 SQUARE MILES CONSTITUENT: Total Nitrate + Nitrite LOAD ESTIMATES FOR 19930101 TO 19970930 TOTAL NUMBER OF OBS.: 114 NUMBER OF UNCENSORED OBS.: 114 CALIBRATION DATA PERIOD OF RECORD: 1993 TO 1997 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 2325. 265. 407. 726. 1211. 2760. 5178. 19566. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 2564. 178. 436. 753. 1265. 2951. 6719. 23242. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 1.6284E+01 + 5.4052E+00 LN(FLOW) - 2.4102E-01 LN(FLOW)**2 + 3.4028E-01 SIN(DECTIME) + 7.6546E-01 COS(DECTIME) ESTIMATED RESIDUAL VARIANCE = 0.666 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 29.40 ( 19 DF) PROBABILITY LEVEL = 0.060 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 1.6284E+01 + 5.4052E+00 LN(FLOW) - 2.4102E-01 LN(FLOW)**2 + 3.4028E-01 SIN(DECTIME) + 7.6546E-01 COS(DECTIME) ESTIMATED RESIDUAL VARIANCE = 0.666 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = - 1.5987E+01 + 5.3202E+00 LN(FLOW) - 2.3380E-01 LN(FLOW)**2 + 2.3420E-01 SIN(DECTIME) + 6.9600E-01 COS(DECTIME) WARNING: THE MAXIMUM PREDICTED CONCENTRATION EXCEEDS THE MAXIMUM OBSERVED SAMPLE CONCENTRATION. 1 STATION: Wapsipinicon River near confluence with Mississippi River (CONTINUED) STATION NUMBER: WP02.6M LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 59. 120. 44. 18. 44. STD DEV LOAD (TON/DAY) 9. 21. 9. 3. 8. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 2. 5. 8. 12. 16. 23. 25. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 4. 18. 64. 176. 244. 515. 1001. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 57. 120. 43. 17. 43. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 2. 5. 7. 12. 16. 22. 24. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 4. 17. 61. 169. 245. 500. 1035. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 56. 110. 48. 19. 39. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 2. 5. 7. 11. 14. 20. 22. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 4. 17. 61. 172. 258. 474. 994. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 36. 1 STATION NAME: Wapsipinicon River near confluence with Mississippi River STATION NUMBER: WP02.6M DRAINAGE AREA: 2519.0 SQUARE MILES CONSTITUENT: Dissolved Ammonia LOAD ESTIMATES FOR 19930101 TO 19970930 TOTAL NUMBER OF OBS.: 114 NUMBER OF UNCENSORED OBS.: 102 CALIBRATION DATA PERIOD OF RECORD: 1993 TO 1997 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 2325. 265. 407. 726. 1211. 2760. 5178. 19566. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 2564. 178. 436. 753. 1265. 2951. 6719. 23242. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 8.3129E+02 - 5.7623E+00 LN(FLOW) + 4.6862E-01 LN(FLOW)**2 + 1.4590E+00 SIN(DECTIME) + 8.3709E-01 COS(DECTIME) + 4.2778E-01 DECTIME ESTIMATED RESIDUAL VARIANCE = 1.818 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 50.73 ( 19 DF) PROBABILITY LEVEL = 0.001 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 7.6858E+02 - 5.2087E+00 LN(FLOW) + 4.3293E-01 LN(FLOW)**2 + 1.3336E+00 SIN(DECTIME) + 8.4194E-01 COS(DECTIME) + 3.9532E-01 DECTIME ESTIMATED RESIDUAL VARIANCE = 1.671 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = - 7.6813E+02 - 5.2400E+00 LN(FLOW) + 4.4089E-01 LN(FLOW)**2 + 1.3223E+00 SIN(DECTIME) + 8.5733E-01 COS(DECTIME) + 3.9513E-01 DECTIME WARNING: THE MAXIMUM PREDICTED CONCENTRATION EXCEEDS THE MAXIMUM OBSERVED SAMPLE CONCENTRATION. 1 STATION: Wapsipinicon River near confluence with Mississippi River (CONTINUED) STATION NUMBER: WP02.6M LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 2.40 4.90 0.82 0.09 3.50 STD DEV LOAD (TON/DAY) 0.90 1.60 0.33 0.02 1.80 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 0. 0. 0. 1. 1. 10. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 0. 1. 4. 10. 33. 473. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 2.00 3.90 0.76 0.09 2.90 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 0. 0. 0. 1. 1. 9. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 0. 1. 3. 8. 26. 410. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 2.30 4.50 0.92 0.10 3.50 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 0. 0. 0. 1. 1. 11. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 0. 1. 4. 9. 30. 533. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 0.82 1 STATION NAME: Wapsipinicon River near confluence with Mississippi River STATION NUMBER: WP02.6M DRAINAGE AREA: 2519.0 SQUARE MILES CONSTITUENT: Total Phosphorus LOAD ESTIMATES FOR 19930101 TO 19970930 TOTAL NUMBER OF OBS.: 105 NUMBER OF UNCENSORED OBS.: 105 CALIBRATION DATA PERIOD OF RECORD: 1993 TO 1997 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 2397. 265. 390. 694. 1211. 2806. 5651. 19566. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 2564. 178. 436. 753. 1265. 2951. 6719. 23242. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 3.3818E+02 + 1.3097E+00 LN(FLOW) - 2.5114E-03 SIN(DECTIME) - 2.6476E-01 COS(DECTIME) + 1.6838E-01 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.533 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 10.86 ( 18 DF) PROBABILITY LEVEL = 0.900 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 3.3818E+02 + 1.3097E+00 LN(FLOW) - 2.5114E-03 SIN(DECTIME) - 2.6476E-01 COS(DECTIME) + 1.6838E-01 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.533 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = - 3.3860E+02 + 1.2314E+00 LN(FLOW) + 1.5049E-02 SIN(DECTIME) - 3.6963E-01 COS(DECTIME) + 1.6884E-01 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: Wapsipinicon River near confluence with Mississippi River (CONTINUED) STATION NUMBER: WP02.6M LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 2.60 3.90 4.30 0.90 0.83 STD DEV LOAD (TON/DAY) 0.32 0.54 0.64 0.14 0.14 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 0. 0. 0. 1. 1. 1. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 1. 3. 7. 11. 22. 36. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 2.80 4.30 4.70 0.98 0.91 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 0. 0. 0. 1. 1. 1. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 1. 3. 8. 12. 24. 39. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 2.70 4.00 4.50 0.92 0.80 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 0. 0. 0. 1. 1. 1. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 1. 3. 8. 11. 22. 35. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 3.0 1 STATION NAME: Wapsipinicon River near confluence with Mississippi River STATION NUMBER: WP02.6M DRAINAGE AREA: 2519.0 SQUARE MILES CONSTITUENT: Soluble Reactive Phosphorus LOAD ESTIMATES FOR 19930101 TO 19970930 TOTAL NUMBER OF OBS.: 76 NUMBER OF UNCENSORED OBS.: 60 CALIBRATION DATA PERIOD OF RECORD: 1993 TO 1997 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 1874. 301. 442. 711. 1200. 2659. 4713. 7156. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 2564. 178. 436. 753. 1265. 2951. 6719. 23242. WARNING: THE RATIO OF LARGEST PREDICTION DATA SET STEAMFLOW AND LARGEST CALIBRATION DATA SET STREAMFLOW EXCEEDS 2.0 MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 6.3898E+02 - 3.8360E+00 LN(FLOW) + 4.3549E-01 LN(FLOW)**2 + 6.4244E-02 SIN(DECTIME) + 1.3037E+00 COS(DECTIME) - 3.1572E-01 DECTIME ESTIMATED RESIDUAL VARIANCE = 2.234 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 35.59 ( 12 DF) PROBABILITY LEVEL = 0.001 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 4.1380E+02 - 3.5752E+00 LN(FLOW) + 4.0882E-01 LN(FLOW)**2 + 2.2862E-02 SIN(DECTIME) + 1.1066E+00 COS(DECTIME) - 2.0301E-01 DECTIME ESTIMATED RESIDUAL VARIANCE = 1.937 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = + 4.1440E+02 - 3.6473E+00 LN(FLOW) + 4.3525E-01 LN(FLOW)**2 + 1.1728E-01 SIN(DECTIME) + 1.1498E+00 COS(DECTIME) - 2.0378E-01 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. WARNING: THE MAXIMUM PREDICTED CONCENTRATION EXCEEDS THE MAXIMUM OBSERVED SAMPLE CONCENTRATION. 1 STATION: Wapsipinicon River near confluence with Mississippi River (CONTINUED) STATION NUMBER: WP02.6M LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 7. 12. 10. 2. 3. STD DEV LOAD (TON/DAY) 6. 9. 9. 1. 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. 2. 4. 12. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 0. 1. 8. 41. 169. 426. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 10. 12. 20. 2. 4. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 0. 0. 0. 1. 6. 15. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 0. 1. 8. 36. 251. 828. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 25. 30. 52. 4. 11. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 0. 0. 1. 3. 17. 45. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 0. 0. 1. 15. 77. 675. 2462. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 0.52 WARNING: ESTIMATE OF MEAN ANNUAL LOAD CALCULATED BY RATING-CURVE METHOD AND BEALE RATIO ESTIMATOR DIFFER BY MORE THAN ONE ORDER OF MAGNITUDE 1 STATION NAME: Wapsipinicon River near confluence with Mississippi River STATION NUMBER: WP02.6M DRAINAGE AREA: 2519.0 SQUARE MILES CONSTITUENT: Total Suspended Sediment LOAD ESTIMATES FOR 19930101 TO 19970930 TOTAL NUMBER OF OBS.: 110 NUMBER OF UNCENSORED OBS.: 110 CALIBRATION DATA PERIOD OF RECORD: 1993 TO 1997 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 2208. 265. 398. 699. 1195. 2570. 5027. 19566. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 2564. 178. 436. 753. 1265. 2951. 6719. 23242. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 3.1660E+02 + 3.2471E+00 LN(FLOW) - 1.3780E-01 LN(FLOW)**2 - 1.5983E-01 SIN(DECTIME) - 1.1862E+00 COS(DECTIME) + 1.5703E-01 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.751 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 33.59 ( 19 DF) PROBABILITY LEVEL = 0.021 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 3.1660E+02 + 3.2471E+00 LN(FLOW) - 1.3780E-01 LN(FLOW)**2 - 1.5983E-01 SIN(DECTIME) - 1.1862E+00 COS(DECTIME) + 1.5703E-01 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.751 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = - 3.1658E+02 + 3.2964E+00 LN(FLOW) - 1.5405E-01 LN(FLOW)**2 - 1.0449E-01 SIN(DECTIME) - 1.2147E+00 COS(DECTIME) + 1.5723E-01 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. WARNING: MAXIMUM PREDICTED CONCENTRATION EXCEEDS 100000 UG/L 1 STATION: Wapsipinicon River near confluence with Mississippi River (CONTINUED) STATION NUMBER: WP02.6M LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 960. 1100. 2100. 290. 98. STD DEV LOAD (TON/DAY) 150. 200. 370. 51. 17. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 10. 34. 80. 185. 279. 333. 416. 441. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 5. 82. 326. 1210. 2907. 4302. 6822. 8068. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 1100. 1300. 2500. 340. 120. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 13. 39. 93. 215. 321. 384. 483. 512. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 6. 95. 379. 1405. 3345. 5116. 8303. 10509. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 920. 1100. 2000. 290. 110. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 17. 40. 91. 202. 323. 384. 457. 483. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 8. 101. 411. 1320. 2812. 3616. 5430. 6206. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 940. 1 STATION NAME: Wapsipinicon River near confluence with Mississippi River STATION NUMBER: WP02.6M DRAINAGE AREA: 2519.0 SQUARE MILES CONSTITUENT: Dissolved Chloride LOAD ESTIMATES FOR 19930101 TO 19970930 TOTAL NUMBER OF OBS.: 111 NUMBER OF UNCENSORED OBS.: 111 CALIBRATION DATA PERIOD OF RECORD: 1993 TO 1997 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 2371. 265. 422. 735. 1222. 2800. 5249. 19566. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 2564. 178. 436. 753. 1265. 2951. 6719. 23242. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 8.3041E+01 + 1.4255E+00 LN(FLOW) - 3.4060E-02 LN(FLOW)**2 + 4.0865E-02 SIN(DECTIME) + 5.4533E-02 COS(DECTIME) + 4.3253E-02 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.049 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 21.07 ( 19 DF) PROBABILITY LEVEL = 0.333 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 8.3041E+01 + 1.4255E+00 LN(FLOW) - 3.4060E-02 LN(FLOW)**2 + 4.0865E-02 SIN(DECTIME) + 5.4533E-02 COS(DECTIME) + 4.3253E-02 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.049 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = - 8.2910E+01 + 1.4130E+00 LN(FLOW) - 3.3173E-02 LN(FLOW)**2 + 6.8624E-02 SIN(DECTIME) + 6.5345E-02 COS(DECTIME) + 4.3220E-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: Wapsipinicon River near confluence with Mississippi River (CONTINUED) STATION NUMBER: WP02.6M LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 110. 160. 130. 56. 61. STD DEV LOAD (TON/DAY) 3. 7. 6. 2. 2. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 10. 16. 18. 19. 20. 21. 21. 22. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 9. 38. 63. 133. 259. 331. 512. 670. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 110. 160. 130. 56. 61. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 10. 16. 18. 19. 20. 21. 21. 22. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 9. 38. 62. 133. 259. 332. 514. 674. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 110. 170. 130. 55. 62. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 10. 16. 18. 19. 20. 21. 22. 22. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 9. 38. 63. 135. 263. 340. 525. 699. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 110. 1 STATION NAME: Wapsipinicon River near confluence with Mississippi River STATION NUMBER: WP02.6M DRAINAGE AREA: 2519.0 SQUARE MILES CONSTITUENT: Dissolved Silicon LOAD ESTIMATES FOR 19930101 TO 19970930 TOTAL NUMBER OF OBS.: 112 NUMBER OF UNCENSORED OBS.: 105 CALIBRATION DATA PERIOD OF RECORD: 1993 TO 1997 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 2353. 265. 403. 734. 1217. 2787. 5226. 19566. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 2564. 178. 436. 753. 1265. 2951. 6719. 23242. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 6.6893E+00 + 2.2338E+00 LN(FLOW) + 4.2969E-02 SIN(DECTIME) + 1.5124E+00 COS(DECTIME) ESTIMATED RESIDUAL VARIANCE = 2.116 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 49.32 ( 19 DF) PROBABILITY LEVEL = 0.001 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 6.3744E+00 + 2.1940E+00 LN(FLOW) + 3.9912E-02 SIN(DECTIME) + 1.4689E+00 COS(DECTIME) ESTIMATED RESIDUAL VARIANCE = 2.000 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = - 1.9505E+00 + 1.6415E+00 LN(FLOW) + 6.6442E-02 SIN(DECTIME) + 8.6378E-01 COS(DECTIME) WARNING: THE MAXIMUM PREDICTED CONCENTRATION EXCEEDS THE MAXIMUM OBSERVED SAMPLE CONCENTRATION. WARNING: MAXIMUM PREDICTED CONCENTRATION EXCEEDS 100000 UG/L 1 STATION: Wapsipinicon River near confluence with Mississippi River (CONTINUED) STATION NUMBER: WP02.6M LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 160. 270. 120. 48. 170. STD DEV LOAD (TON/DAY) 51. 91. 47. 17. 64. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 2. 6. 13. 24. 35. 88. 266. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 4. 19. 80. 346. 786. 2163. 12718. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 110. 190. 89. 34. 120. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 1. 4. 9. 17. 24. 61. 186. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 0. 3. 13. 56. 241. 557. 1508. 8873. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 43. 74. 42. 17. 33. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 1. 2. 4. 5. 7. 9. 15. 29. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 1. 4. 11. 34. 107. 221. 463. 1373. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 27.