1 STATION NAME: Mississippi River downstream of Lock and Dam 25 STATION NUMBER: M241.4K DRAINAGE AREA: 142048.0 SQUARE MILES CONSTITUENT: Total Nitrogen LOAD ESTIMATES FOR 19910101 TO 19970930 TOTAL NUMBER OF OBS.: 114 NUMBER OF UNCENSORED OBS.: 114 CALIBRATION DATA PERIOD OF RECORD: 1991 TO 1997 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 104267. 35604. 50205. 66929. 86109. 121321. 185385. 303774. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 115426. 23937. 51031. 63825. 89849. 149491. 206088. 537517. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 2.1226E+02 + 6.1297E+00 LN(FLOW) - 2.1605E-01 LN(FLOW)**2 + 1.8540E-01 SIN(DECTIME) - 1.9191E-02 COS(DECTIME) - 1.2015E-01 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.108 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 21.02 ( 19 DF) PROBABILITY LEVEL = 0.336 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 2.1226E+02 + 6.1297E+00 LN(FLOW) - 2.1605E-01 LN(FLOW)**2 + 1.8540E-01 SIN(DECTIME) - 1.9191E-02 COS(DECTIME) - 1.2015E-01 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.108 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = + 2.1334E+02 + 6.5178E+00 LN(FLOW) - 2.2932E-01 LN(FLOW)**2 + 1.6768E-01 SIN(DECTIME) - 5.4199E-02 COS(DECTIME) - 1.2206E-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: Mississippi River downstream of Lock and Dam 25 (CONTINUED) STATION NUMBER: M241.4K LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 1400. 2300. 1400. 800. 850. STD DEV LOAD (TON/DAY) 67. 150. 99. 47. 52. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 2. 3. 4. 5. 6. 7. 7. 8. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 129. 593. 997. 1891. 3084. 3568. 4183. 4366. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 1400. 2300. 1400. 800. 850. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 2. 3. 4. 5. 6. 7. 7. 8. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 132. 595. 1000. 1897. 3096. 3585. 4258. 4418. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 1400. 2400. 1600. 810. 810. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 2. 3. 4. 5. 6. 7. 8. 8. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 111. 576. 987. 1966. 3305. 3864. 4699. 5057. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 1200. 1 STATION NAME: Mississippi River downstream of Lock and Dam 25 STATION NUMBER: M241.4K DRAINAGE AREA: 142048.0 SQUARE MILES CONSTITUENT: Total Nitrate + Nitrite LOAD ESTIMATES FOR 19910101 TO 19970930 TOTAL NUMBER OF OBS.: 120 NUMBER OF UNCENSORED OBS.: 119 CALIBRATION DATA PERIOD OF RECORD: 1991 TO 1997 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 108307. 35604. 51826. 67241. 88096. 129437. 202911. 303774. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 115426. 23937. 51031. 63825. 89849. 149491. 206088. 537517. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 8.5633E+01 + 1.0822E+01 LN(FLOW) - 4.2625E-01 LN(FLOW)**2 + 3.3674E-01 SIN(DECTIME) - 4.8542E-02 COS(DECTIME) - 7.0029E-02 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.616 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 81.80 ( 21 DF) PROBABILITY LEVEL = 0.001 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 8.6816E+01 + 1.0703E+01 LN(FLOW) - 4.2096E-01 LN(FLOW)**2 + 3.3576E-01 SIN(DECTIME) - 4.9174E-02 COS(DECTIME) - 7.0291E-02 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.611 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = + 8.7405E+01 + 1.0833E+01 LN(FLOW) - 4.2203E-01 LN(FLOW)**2 + 3.1060E-01 SIN(DECTIME) - 6.5946E-02 COS(DECTIME) - 7.1197E-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 downstream of Lock and Dam 25 (CONTINUED) STATION NUMBER: M241.4K LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 920. 1600. 890. 490. 620. STD DEV LOAD (TON/DAY) 95. 230. 110. 64. 89. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 1. 2. 3. 4. 4. 5. 5. 5. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 74. 447. 738. 1280. 1798. 2141. 2352. 2480. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 820. 1400. 800. 440. 550. 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. 5. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 74. 393. 651. 1169. 1597. 1909. 2100. 2223. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 840. 1500. 850. 440. 520. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 1. 2. 3. 3. 4. 4. 4. 5. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 62. 375. 638. 1221. 1723. 2014. 2268. 2377. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 800. 1 STATION NAME: Mississippi River downstream of Lock and Dam 25 STATION NUMBER: M241.4K DRAINAGE AREA: 142048.0 SQUARE MILES CONSTITUENT: Dissolved Ammonia LOAD ESTIMATES FOR 19910101 TO 19970930 TOTAL NUMBER OF OBS.: 119 NUMBER OF UNCENSORED OBS.: 103 CALIBRATION DATA PERIOD OF RECORD: 1991 TO 1997 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 107098. 35604. 51699. 67063. 86701. 127162. 193693. 303774. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 115426. 23937. 51031. 63825. 89849. 149491. 206088. 537517. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 8.0612E+00 + 1.5501E+00 LN(FLOW) + 6.5783E-01 SIN(DECTIME) + 5.3774E-01 COS(DECTIME) ESTIMATED RESIDUAL VARIANCE = 3.394 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 86.44 ( 20 DF) PROBABILITY LEVEL = 0.001 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 7.9826E+00 + 1.5511E+00 LN(FLOW) + 6.0234E-01 SIN(DECTIME) + 5.0978E-01 COS(DECTIME) ESTIMATED RESIDUAL VARIANCE = 3.015 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = - 7.4686E+00 + 1.5330E+00 LN(FLOW) + 3.2747E-01 SIN(DECTIME) + 4.1956E-01 COS(DECTIME) 1 STATION: Mississippi River downstream of Lock and Dam 25 (CONTINUED) STATION NUMBER: M241.4K LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 71. 150. 45. 26. 55. STD DEV LOAD (TON/DAY) 22. 55. 17. 9. 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. 1. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 4. 19. 41. 102. 178. 217. 321. 387. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 38. 80. 26. 15. 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 2. 11. 22. 55. 94. 119. 171. 208. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 34. 63. 29. 18. 25. 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 3. 12. 21. 49. 77. 97. 153. 185. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 34. 1 STATION NAME: Mississippi River downstream of Lock and Dam 25 STATION NUMBER: M241.4K DRAINAGE AREA: 142048.0 SQUARE MILES CONSTITUENT: Total Phosphorus LOAD ESTIMATES FOR 19910101 TO 19970930 TOTAL NUMBER OF OBS.: 107 NUMBER OF UNCENSORED OBS.: 107 CALIBRATION DATA PERIOD OF RECORD: 1991 TO 1997 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 107388. 35604. 52981. 70227. 90221. 124933. 189920. 303774. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 115426. 23937. 51031. 63825. 89849. 149491. 206088. 537517. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 1.0123E+02 + 1.2969E+00 LN(FLOW) - 6.3562E-03 SIN(DECTIME) - 1.8168E-01 COS(DECTIME) - 5.2449E-02 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.100 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 23.71 ( 18 DF) PROBABILITY LEVEL = 0.165 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 1.0123E+02 + 1.2969E+00 LN(FLOW) - 6.3562E-03 SIN(DECTIME) - 1.8168E-01 COS(DECTIME) - 5.2449E-02 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.100 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = + 9.9166E+01 + 1.1469E+00 LN(FLOW) + 1.8657E-02 SIN(DECTIME) - 2.1217E-01 COS(DECTIME) - 5.0546E-02 DECTIME 1 STATION: Mississippi River downstream of Lock and Dam 25 (CONTINUED) STATION NUMBER: M241.4K LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 75. 110. 100. 46. 33. STD DEV LOAD (TON/DAY) 4. 7. 7. 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. 29. 48. 95. 164. 207. 392. 588. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 76. 110. 100. 46. 33. 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. 30. 48. 95. 165. 208. 395. 593. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 71. 110. 95. 44. 33. 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 8. 31. 49. 90. 151. 183. 325. 462. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 70. 1 STATION NAME: Mississippi River downstream of Lock and Dam 25 STATION NUMBER: M241.4K DRAINAGE AREA: 142048.0 SQUARE MILES CONSTITUENT: Soluble Reactive Phosphorus LOAD ESTIMATES FOR 19910101 TO 19970930 TOTAL NUMBER OF OBS.: 120 NUMBER OF UNCENSORED OBS.: 118 CALIBRATION DATA PERIOD OF RECORD: 1991 TO 1997 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 107392. 35604. 52973. 67850. 88096. 126605. 193420. 303774. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 115426. 23937. 51031. 63825. 89849. 149491. 206088. 537517. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 4.4729E+02 + 1.3720E+00 LN(FLOW) - 2.2706E-01 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.833 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 47.45 ( 21 DF) PROBABILITY LEVEL = 0.001 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 4.4562E+02 + 1.3756E+00 LN(FLOW) - 2.2624E-01 DECTIME ESTIMATED RESIDUAL VARIANCE = 0.820 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = + 4.4562E+02 + 1.2330E+00 LN(FLOW) - 2.2537E-01 DECTIME 1 STATION: Mississippi River downstream of Lock and Dam 25 (CONTINUED) STATION NUMBER: M241.4K LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 32. 49. 39. 20. 17. STD DEV LOAD (TON/DAY) 5. 8. 6. 2. 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 3. 11. 19. 38. 82. 102. 163. 245. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 29. 44. 35. 18. 16. 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. 10. 17. 34. 74. 94. 151. 231. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 27. 40. 32. 18. 16. 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 3. 10. 17. 33. 66. 83. 123. 180. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 22. 1 STATION NAME: Mississippi River downstream of Lock and Dam 25 STATION NUMBER: M241.4K DRAINAGE AREA: 142048.0 SQUARE MILES CONSTITUENT: Total Suspended Sediment LOAD ESTIMATES FOR 19910101 TO 19970930 TOTAL NUMBER OF OBS.: 118 NUMBER OF UNCENSORED OBS.: 117 CALIBRATION DATA PERIOD OF RECORD: 1991 TO 1997 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 107125. 35604. 52546. 68001. 88096. 125490. 191238. 303774. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 115426. 23937. 51031. 63825. 89849. 149491. 206088. 537517. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 5.1852E+00 + 1.9424E+00 LN(FLOW) + 1.2265E-01 SIN(DECTIME) - 6.0236E-01 COS(DECTIME) ESTIMATED RESIDUAL VARIANCE = 0.779 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 83.30 ( 20 DF) PROBABILITY LEVEL = 0.001 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 5.1909E+00 + 1.9430E+00 LN(FLOW) + 1.2181E-01 SIN(DECTIME) - 6.0056E-01 COS(DECTIME) ESTIMATED RESIDUAL VARIANCE = 0.772 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = - 5.7092E+00 + 1.9886E+00 LN(FLOW) - 7.8292E-02 SIN(DECTIME) - 5.2513E-01 COS(DECTIME) WARNING: MAXIMUM PREDICTED CONCENTRATION EXCEEDS 100000 UG/L 1 STATION: Mississippi River downstream of Lock and Dam 25 (CONTINUED) STATION NUMBER: M241.4K LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 51000. 85000. 89000. 16000. 8300. STD DEV LOAD (TON/DAY) 8200. 14000. 18000. 3100. 1300. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 11. 39. 72. 147. 243. 298. 463. 569. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 723. 7054. 17957. 53361. 131858. 195941. 471335. 811825. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 43000. 71000. 76000. 14000. 7000. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 10. 32. 60. 122. 204. 249. 397. 499. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 625. 5881. 15009. 44463. 110403. 165021. 407749. 720089. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 41000. 60000. 76000. 17000. 7000. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 9. 35. 62. 109. 183. 225. 410. 553. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 596. 6356. 14835. 40747. 99181. 155008. 430112. 802248. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 33000. 1 STATION NAME: Mississippi River downstream of Lock and Dam 25 STATION NUMBER: M241.4K DRAINAGE AREA: 142048.0 SQUARE MILES CONSTITUENT: Dissolved Chloride LOAD ESTIMATES FOR 19910101 TO 19970930 TOTAL NUMBER OF OBS.: 117 NUMBER OF UNCENSORED OBS.: 117 CALIBRATION DATA PERIOD OF RECORD: 1991 TO 1997 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 108739. 35604. 52120. 67926. 89491. 130221. 195741. 303774. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 115426. 23937. 51031. 63825. 89849. 149491. 206088. 537517. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 6.3105E+00 + 8.5007E-01 LN(FLOW) + 6.3919E-02 SIN(DECTIME) + 1.1305E-01 COS(DECTIME) ESTIMATED RESIDUAL VARIANCE = 0.047 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 38.42 ( 20 DF) PROBABILITY LEVEL = 0.008 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = + 6.3105E+00 + 8.5007E-01 LN(FLOW) + 6.3919E-02 SIN(DECTIME) + 1.1305E-01 COS(DECTIME) ESTIMATED RESIDUAL VARIANCE = 0.047 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = + 5.7673E+00 + 8.9688E-01 LN(FLOW) + 3.5370E-02 SIN(DECTIME) + 1.0428E-01 COS(DECTIME) 1 STATION: Mississippi River downstream of Lock and Dam 25 (CONTINUED) STATION NUMBER: M241.4K LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 5500. 7700. 5600. 4200. 4300. STD DEV LOAD (TON/DAY) 130. 270. 190. 150. 160. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 13. 17. 19. 20. 23. 23. 24. 26. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 1680. 3462. 4545. 7229. 9217. 10775. 14169. 18318. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 5500. 7700. 5600. 4200. 4300. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 13. 17. 19. 20. 23. 23. 24. 26. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 1685. 3465. 4547. 7234. 9231. 10799. 14215. 18397. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 5500. 7700. 5800. 4300. 4200. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 14. 17. 19. 20. 22. 22. 23. 24. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 1550. 3399. 4515. 7269. 9382. 11317. 15515. 20325. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 5500. 1 STATION NAME: Mississippi River downstream of Lock and Dam 25 STATION NUMBER: M241.4K DRAINAGE AREA: 142048.0 SQUARE MILES CONSTITUENT: Dissolved Silicon LOAD ESTIMATES FOR 19910101 TO 19970930 TOTAL NUMBER OF OBS.: 117 NUMBER OF UNCENSORED OBS.: 117 CALIBRATION DATA PERIOD OF RECORD: 1991 TO 1997 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 108218. 35604. 52120. 67926. 89491. 128679. 195741. 303774. PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS MEAN MINIMUM 10TH PCT 25TH PCT MEDIAN 75TH PCT 90TH PCT MAXIMUM 115426. 23937. 51031. 63825. 89849. 149491. 206088. 537517. MAXIMUM LIKELIHOOD ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 5.8165E+01 + 1.1026E+01 LN(FLOW) - 4.0922E-01 LN(FLOW)**2 - 1.9556E-01 SIN(DECTIME) + 2.6966E-01 COS(DECTIME) ESTIMATED RESIDUAL VARIANCE = 0.383 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC = 58.06 ( 20 DF) PROBABILITY LEVEL = 0.001 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL --------------------------------------------- LN(LOAD) = - 5.8165E+01 + 1.1026E+01 LN(FLOW) - 4.0922E-01 LN(FLOW)**2 - 1.9556E-01 SIN(DECTIME) + 2.6966E-01 COS(DECTIME) ESTIMATED RESIDUAL VARIANCE = 0.383 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL --------------------------------------------------- LN(LOAD) = - 5.7121E+01 + 1.1167E+01 LN(FLOW) - 4.2800E-01 LN(FLOW)**2 - 9.2792E-02 SIN(DECTIME) + 1.5814E-01 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 downstream of Lock and Dam 25 (CONTINUED) STATION NUMBER: M241.4K LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.) ----------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 1400. 1800. 1400. 1200. 930. STD DEV LOAD (TON/DAY) 110. 200. 180. 140. 99. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 1. 3. 4. 5. 6. 7. 7. 8. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 62. 584. 1055. 1982. 2658. 3286. 4325. 4805. LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.) ---------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 1300. 1800. 1300. 1200. 890. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 1. 3. 4. 4. 6. 6. 7. 8. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 64. 555. 1002. 1883. 2536. 3173. 4458. 4837. LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.) ----------------------------------------------------------------------------- ANNUAL SPRING SUMMER FALL WINTER AVERAGE LOAD (TON/DAY) 1200. 1700. 1200. 1000. 830. PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 1. 3. 4. 4. 5. 5. 5. 5. PREDICTED LOAD SUMMARY STATISTICS (TON/DAY) MINIMUM 25TH PCT MEDIAN 75TH PCT 90TH PCT 95TH PCT 99TH PCT MAXIMUM 85. 613. 1018. 1743. 2158. 2500. 2884. 3070. LOAD ESTIMATED BY BEALE RATIO ESTIMATOR --------------------------------------- AVERAGE ANNUAL LOAD (TON/DAY): 1200.