1
 
 
 
 STATION NAME:  Upper Iowa River near confluence with Mississippi River
 STATION NUMBER:  UI02.9M        
 DRAINAGE AREA:      990.0 SQUARE MILES
 
 CONSTITUENT: Total Nitrogen                               
 LOAD ESTIMATES FOR   19950101 TO   19970930
 TOTAL NUMBER OF OBS.:    54        NUMBER OF UNCENSORED OBS.:    54
 CALIBRATION DATA PERIOD OF RECORD: 1995 TO 1997
 
 
 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS
       MEAN   MINIMUM  10TH PCT  25TH PCT    MEDIAN  75TH PCT  90TH PCT   MAXIMUM
       537.      167.      233.      298.      400.      616.     1019.     2135.
 
 PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS
       MEAN   MINIMUM  10TH PCT  25TH PCT    MEDIAN  75TH PCT  90TH PCT   MAXIMUM
       704.      122.      244.      309.      444.      832.     1415.     6456.
 
 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) = + 7.6608E+00 - 8.6004E-01 LN(FLOW) + 1.7430E-01 LN(FLOW)**2
 
 ESTIMATED RESIDUAL VARIANCE =    0.138
 
 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC =   11.49 (  7 DF)
 PROBABILITY LEVEL =  0.119
 
 
 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL
 ---------------------------------------------

 LN(LOAD) = + 7.6608E+00 - 8.6004E-01 LN(FLOW) + 1.7430E-01 LN(FLOW)**2
 
 ESTIMATED RESIDUAL VARIANCE =    0.138
 
 
 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL
 ---------------------------------------------------

 LN(LOAD) = + 1.1775E+01 - 2.1539E+00 LN(FLOW) + 2.7654E-01 LN(FLOW)**2
 
 
 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:   Upper Iowa River near confluence with Mississippi River    (CONTINUED)
 STATION NUMBER:  UI02.9M        
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.)
 -----------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)            11.       22.       12.        3.        3.
 STD DEV LOAD (TON/DAY)             2.        5.        2.        0.        0.
 
 
 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         3.        3.        3.        4.        6.        7.       12.       18.
 
 PREDICTED LOAD SUMMARY STATISTICS (TON/DAY)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         1.        3.        4.        9.       21.       38.      129.      312.
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.)
 ----------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)            11.       23.       12.        3.        3.
 
 
 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         3.        3.        3.        4.        5.        7.       13.       23.
 
 PREDICTED LOAD SUMMARY STATISTICS (TON/DAY)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         1.        2.        4.        9.       21.       38.      141.      395.
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.)
 -----------------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)            13.       27.       15.        3.        3.
 
 
 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         3.        3.        3.        4.        6.        8.       19.       40.
 
 PREDICTED LOAD SUMMARY STATISTICS (TON/DAY)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         1.        2.        4.        9.       22.       44.      201.      702.
 
 
 LOAD ESTIMATED BY BEALE RATIO ESTIMATOR
 ---------------------------------------
 
 AVERAGE ANNUAL LOAD (TON/DAY):       7.7
1
 
 
 
 STATION NAME:  Upper Iowa River near confluence with Mississippi River                      
 STATION NUMBER:  UI02.9M        
 DRAINAGE AREA:      990.0 SQUARE MILES
 
 CONSTITUENT: Total Nitrate + Nitrite                               
 LOAD ESTIMATES FOR   19950101 TO   19970930
 TOTAL NUMBER OF OBS.:    58        NUMBER OF UNCENSORED OBS.:    58
 CALIBRATION DATA PERIOD OF RECORD: 1995 TO 1997
 
 
 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS
       MEAN   MINIMUM  10TH PCT  25TH PCT    MEDIAN  75TH PCT  90TH PCT   MAXIMUM
       559.      167.      236.      305.      400.      665.     1050.     2135.
 
 PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS
       MEAN   MINIMUM  10TH PCT  25TH PCT    MEDIAN  75TH PCT  90TH PCT   MAXIMUM
       704.      122.      244.      309.      444.      832.     1415.     6456.
 
 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) = - 1.6612E+02 + 1.3405E+00 LN(FLOW) + 1.3488E-01 SIN(DECTIME)
            + 2.2304E-01 COS(DECTIME) + 8.3585E-02 DECTIME
 
 ESTIMATED RESIDUAL VARIANCE =    0.069
 
 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC =   18.13 (  8 DF)
 PROBABILITY LEVEL =  0.020
 
 
 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL
 ---------------------------------------------

 LN(LOAD) = - 1.6612E+02 + 1.3405E+00 LN(FLOW) + 1.3488E-01 SIN(DECTIME)
            + 2.2304E-01 COS(DECTIME) + 8.3585E-02 DECTIME
 
 ESTIMATED RESIDUAL VARIANCE =    0.069
 
 
 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL
 ---------------------------------------------------

 LN(LOAD) = - 1.6616E+02 + 1.3628E+00 LN(FLOW) + 1.2079E-01 SIN(DECTIME)
            + 2.1441E-01 COS(DECTIME) + 8.3538E-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:   Upper Iowa River near confluence with Mississippi River (CONTINUED)
 STATION NUMBER:  UI02.9M        
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.)
 -----------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)             8.       18.        8.        3.        4.
 STD DEV LOAD (TON/DAY)             1.        2.        1.        0.        0.
 
 
 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         2.        3.        3.        4.        5.        6.        8.        9.
 
 PREDICTED LOAD SUMMARY STATISTICS (TON/DAY)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         1.        2.        4.        9.       18.       29.       80.      132.
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.)
 ----------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)             8.       18.        8.        3.        4.
 
 
 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         2.        3.        3.        4.        5.        6.        8.        9.
 
 PREDICTED LOAD SUMMARY STATISTICS (TON/DAY)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         1.        2.        4.        9.       18.       29.       82.      135.
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.)
 -----------------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)             9.       18.        8.        3.        3.
 
 
 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         2.        3.        3.        4.        5.        6.        8.       10.
 
 PREDICTED LOAD SUMMARY STATISTICS (TON/DAY)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         1.        2.        4.        9.       19.       30.       86.      140.
 
 
 LOAD ESTIMATED BY BEALE RATIO ESTIMATOR
 ---------------------------------------
 
 AVERAGE ANNUAL LOAD (TON/DAY):       7.3
1
 
 
 
 STATION NAME:  Upper Iowa River near confluence with Mississippi River                      
 STATION NUMBER:  UI02.9M        
 DRAINAGE AREA:      990.0 SQUARE MILES
 
 CONSTITUENT: Dissolved Ammonia                            
 LOAD ESTIMATES FOR   19950101 TO   19970930
 TOTAL NUMBER OF OBS.:    58        NUMBER OF UNCENSORED OBS.:    54
 CALIBRATION DATA PERIOD OF RECORD: 1995 TO 1997
 
 
 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS
       MEAN   MINIMUM  10TH PCT  25TH PCT    MEDIAN  75TH PCT  90TH PCT   MAXIMUM
       559.      167.      236.      305.      400.      665.     1050.     2135.
 
 PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS
       MEAN   MINIMUM  10TH PCT  25TH PCT    MEDIAN  75TH PCT  90TH PCT   MAXIMUM
       704.      122.      244.      309.      444.      832.     1415.     6456.
 
 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) = - 3.4413E+00 + 1.2658E+00 LN(FLOW) + 6.6621E-01 SIN(DECTIME)
            + 1.8391E-01 COS(DECTIME)
 
 ESTIMATED RESIDUAL VARIANCE =    1.560
 
 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC =   31.59 (  8 DF)
 PROBABILITY LEVEL =  0.001
 
 
 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL
 ---------------------------------------------

 LN(LOAD) = - 3.3846E+00 + 1.2610E+00 LN(FLOW) + 6.5046E-01 SIN(DECTIME)
            + 2.1085E-01 COS(DECTIME)
 
 ESTIMATED RESIDUAL VARIANCE =    1.464
 
 
 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL
 ---------------------------------------------------

 LN(LOAD) = - 1.2940E+00 + 9.7571E-01 LN(FLOW) + 7.3217E-01 SIN(DECTIME)
            + 2.3627E-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:   Upper Iowa River near confluence with Mississippi River    (CONTINUED)
 STATION NUMBER:  UI02.9M       
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.)
 -----------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)           0.19      0.46      0.13      0.03      0.08
 STD DEV LOAD (TON/DAY)           0.07      0.19      0.05      0.01      0.02
 
 
 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.        0.        0.        0.        0.        1.        2.        2.
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.)
 ----------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)           0.16      0.41      0.11      0.03      0.07
 
 
 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.        0.        0.        0.        0.        1.        2.        3.
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.)
 -----------------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)           0.13      0.30      0.09      0.03      0.07
 
 
 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.        0.        0.        0.        0.        0.        1.        1.
 
 
 LOAD ESTIMATED BY BEALE RATIO ESTIMATOR
 ---------------------------------------
 
 AVERAGE ANNUAL LOAD (TON/DAY):       0.11
1
 
 
 
 STATION NAME:  Upper Iowa River near confluence with Mississippi River                      
 STATION NUMBER:  UI02.9M        
 DRAINAGE AREA:      990.0 SQUARE MILES
 
 CONSTITUENT: Total Phosphorus                             
 LOAD ESTIMATES FOR   19950101 TO   19970930
 TOTAL NUMBER OF OBS.:    45        NUMBER OF UNCENSORED OBS.:    45
 CALIBRATION DATA PERIOD OF RECORD: 1995 TO 1997
 
 
 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS
       MEAN   MINIMUM  10TH PCT  25TH PCT    MEDIAN  75TH PCT  90TH PCT   MAXIMUM
       573.      167.      236.      332.      450.      643.     1099.     2135.
 
 PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS
       MEAN   MINIMUM  10TH PCT  25TH PCT    MEDIAN  75TH PCT  90TH PCT   MAXIMUM
       704.      122.      244.      309.      444.      832.     1415.     6456.
 
 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) = - 3.8881E+00 + 1.4744E+00 LN(FLOW)
 
 ESTIMATED RESIDUAL VARIANCE =    0.950
 
 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC =   33.12 (  6 DF)
 PROBABILITY LEVEL =  0.001
 
 
 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL
 ---------------------------------------------

 LN(LOAD) = - 3.8881E+00 + 1.4744E+00 LN(FLOW)
 
 ESTIMATED RESIDUAL VARIANCE =    0.950
 
 
 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL
 ---------------------------------------------------

 LN(LOAD) = - 5.1491E+00 + 1.7152E+00 LN(FLOW)
 
 
 WARNING: THE MAXIMUM PREDICTED CONCENTRATION EXCEEDS THE MAXIMUM
          OBSERVED SAMPLE CONCENTRATION.
 
1
 
 
 
 STATION:   Upper Iowa River near confluence with Mississippi River    (CONTINUED)
 STATION NUMBER:  UI02.9M        
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.)
 -----------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)           0.31      0.62      0.35      0.09      0.09
 STD DEV LOAD (TON/DAY)           0.09      0.22      0.10      0.02      0.02
 
 
 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.        0.        0.        0.        1.        1.        3.        5.
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.)
 ----------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)           0.26      0.53      0.29      0.07      0.07
 
 
 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.        0.        0.        0.        1.        1.        3.        5.
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.)
 -----------------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)           0.34      0.73      0.38      0.06      0.07
 
 
 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
         0.        0.        0.        0.        1.        1.        4.       10.
 
 
 LOAD ESTIMATED BY BEALE RATIO ESTIMATOR
 ---------------------------------------
 
 AVERAGE ANNUAL LOAD (TON/DAY):       0.25
1
 
 
 
 STATION NAME:  Upper Iowa River near confluence with Mississippi River                      
 STATION NUMBER:  UI02.9M        
 DRAINAGE AREA:      990.0 SQUARE MILES
 
 CONSTITUENT: Soluble Reactive Phosphorus
 LOAD ESTIMATES FOR   19950101 TO   19970930
 TOTAL NUMBER OF OBS.:    54        NUMBER OF UNCENSORED OBS.:    40
 CALIBRATION DATA PERIOD OF RECORD: 1995 TO 1997
 
 
 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS
       MEAN   MINIMUM  10TH PCT  25TH PCT    MEDIAN  75TH PCT  90TH PCT   MAXIMUM
       538.      167.      233.      298.      400.      616.     1019.     2135.
 
 PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS
       MEAN   MINIMUM  10TH PCT  25TH PCT    MEDIAN  75TH PCT  90TH PCT   MAXIMUM
       704.      122.      244.      309.      444.      832.     1415.     6456.
 
 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) = + 1.1653E+03 + 1.8588E+00 LN(FLOW) + 1.1558E+00 SIN(DECTIME)
            + 1.1908E+00 COS(DECTIME) - 5.8788E-01 DECTIME
 
 ESTIMATED RESIDUAL VARIANCE =    2.055
 
 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC =   19.91 (  7 DF)
 PROBABILITY LEVEL =  0.006
 
 
 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL
 ---------------------------------------------

 LN(LOAD) = + 6.4040E+02 + 1.6488E+00 LN(FLOW) + 9.8236E-01 SIN(DECTIME)
            + 9.7378E-01 COS(DECTIME) - 3.2424E-01 DECTIME
 
 ESTIMATED RESIDUAL VARIANCE =    1.715
 
 
 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL
 ---------------------------------------------------

 LN(LOAD) = + 6.3932E+02 + 1.5299E+00 LN(FLOW) + 1.3670E+00 SIN(DECTIME)
            + 9.8459E-01 COS(DECTIME) - 3.2339E-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:   Upper Iowa River near confluence with Mississippi River    (CONTINUED)
 STATION NUMBER:  UI02.9M        
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.)
 -----------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)           0.18      0.53      0.04      0.01      0.09
 STD DEV LOAD (TON/DAY)           0.10      0.32      0.02      0.00      0.04
 
 
 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
         0.        0.        0.        0.        0.        1.        2.        6.
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.)
 ----------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)           0.15      0.42      0.04      0.01      0.07
 
 
 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.        0.        0.        0.        0.        1.        2.        4.
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.)
 -----------------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)           0.18      0.54      0.04      0.01      0.09
 
 
 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
         0.        0.        0.        0.        0.        1.        3.        5.
 
 
 LOAD ESTIMATED BY BEALE RATIO ESTIMATOR
 ---------------------------------------
 
 AVERAGE ANNUAL LOAD (TON/DAY):       0.04
1
 
 
 
 STATION NAME:  Upper Iowa River near confluence with Mississippi River                      
 STATION NUMBER:  UI02.9M        
 DRAINAGE AREA:      990.0 SQUARE MILES
 
 CONSTITUENT: Total Suspended Sediment                     
 LOAD ESTIMATES FOR   19950101 TO   19970930
 TOTAL NUMBER OF OBS.:    58        NUMBER OF UNCENSORED OBS.:    58
 CALIBRATION DATA PERIOD OF RECORD: 1995 TO 1997
 
 
 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS
       MEAN   MINIMUM  10TH PCT  25TH PCT    MEDIAN  75TH PCT  90TH PCT   MAXIMUM
       559.      167.      236.      305.      400.      665.     1050.     2135.
 
 PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS
       MEAN   MINIMUM  10TH PCT  25TH PCT    MEDIAN  75TH PCT  90TH PCT   MAXIMUM
       704.      122.      244.      309.      444.      832.     1415.     6456.
 
 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) = - 2.9206E+00 + 2.2312E+00 LN(FLOW) - 3.6599E-01 SIN(DECTIME)
            - 4.9768E-01 COS(DECTIME)
 
 ESTIMATED RESIDUAL VARIANCE =    0.366
 
 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC =    4.72 (  8 DF)
 PROBABILITY LEVEL =  0.787
 
 
 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL
 ---------------------------------------------

 LN(LOAD) = - 2.9206E+00 + 2.2312E+00 LN(FLOW) - 3.6599E-01 SIN(DECTIME)
            - 4.9768E-01 COS(DECTIME)
 
 ESTIMATED RESIDUAL VARIANCE =    0.366
 
 
 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL
 ---------------------------------------------------

 LN(LOAD) = - 3.4721E+00 + 2.3311E+00 LN(FLOW) - 2.7470E-01 SIN(DECTIME)
            - 5.0545E-01 COS(DECTIME)
 
 
 WARNING: THE MAXIMUM PREDICTED CONCENTRATION EXCEEDS THE MAXIMUM
          OBSERVED SAMPLE CONCENTRATION.
 
 
      WARNING: MAXIMUM PREDICTED CONCENTRATION EXCEEDS 100000 UG/L
 
1
 
 
 
 STATION:   Upper Iowa River near confluence with Mississippi River    (CONTINUED)
 STATION NUMBER:  UI02.9M        
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.)
 -----------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)           170.      300.      300.       19.       12.
 STD DEV LOAD (TON/DAY)            45.       84.       82.        3.        2.
 
 
 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         2.       12.       28.       55.       96.      133.      225.      771.
 
 PREDICTED LOAD SUMMARY STATISTICS (TON/DAY)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         1.       11.       34.      117.      349.      704.     2128.    13417.
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.)
 ----------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)           180.      310.      310.       19.       12.
 
 
 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         2.       12.       28.       54.       95.      134.      233.      856.
 
 PREDICTED LOAD SUMMARY STATISTICS (TON/DAY)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         1.       10.       33.      115.      346.      704.     2270.    14907.
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.)
 -----------------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)           220.      400.      370.       17.       13.
 
 
 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         2.       11.       28.       60.      112.      163.      317.     1154.
 
 PREDICTED LOAD SUMMARY STATISTICS (TON/DAY)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         1.       10.       34.      123.      419.      892.     3101.    20090.
 
 
 LOAD ESTIMATED BY BEALE RATIO ESTIMATOR
 ---------------------------------------
 
 AVERAGE ANNUAL LOAD (TON/DAY):     100.
1
 
 
 
 STATION NAME:  Upper Iowa River near confluence with Mississippi River                      
 STATION NUMBER:  UI02.9M        
 DRAINAGE AREA:      990.0 SQUARE MILES
 
 CONSTITUENT: Dissolved Chloride                           
 LOAD ESTIMATES FOR   19950101 TO   19970930
 TOTAL NUMBER OF OBS.:    51        NUMBER OF UNCENSORED OBS.:    51
 CALIBRATION DATA PERIOD OF RECORD: 1995 TO 1997
 
 
 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS
       MEAN   MINIMUM  10TH PCT  25TH PCT    MEDIAN  75TH PCT  90TH PCT   MAXIMUM
       541.      167.      230.      291.      400.      613.     1028.     2135.
 
 PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS
       MEAN   MINIMUM  10TH PCT  25TH PCT    MEDIAN  75TH PCT  90TH PCT   MAXIMUM
       704.      122.      244.      309.      444.      832.     1415.     6456.
 
 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) = - 9.6719E+01 + 1.0677E+00 LN(FLOW) + 5.0264E-02 DECTIME
 
 ESTIMATED RESIDUAL VARIANCE =    0.014
 
 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC =    6.50 (  7 DF)
 PROBABILITY LEVEL =  0.483
 
 
 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL
 ---------------------------------------------

 LN(LOAD) = - 9.6719E+01 + 1.0677E+00 LN(FLOW) + 5.0264E-02 DECTIME
 
 ESTIMATED RESIDUAL VARIANCE =    0.014
 
 
 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL
 ---------------------------------------------------

 LN(LOAD) = - 9.6386E+01 + 1.0596E+00 LN(FLOW) + 5.0114E-02 DECTIME
 
1
 
 
 
 STATION:   Upper Iowa River near confluence with Mississippi River   (CONTINUED)
 STATION NUMBER:  UI02.9M        
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.)
 -----------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)            21.       38.       24.        9.        9.
 STD DEV LOAD (TON/DAY)             1.        2.        1.        0.        0.
 
 
 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         9.       10.       11.       11.       12.       12.       13.       13.
 
 PREDICTED LOAD SUMMARY STATISTICS (TON/DAY)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         3.        9.       13.       25.       43.       62.      133.      222.
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.)
 ----------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)            21.       38.       24.        9.        9.
 
 
 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         9.       10.       11.       11.       12.       12.       13.       13.
 
 PREDICTED LOAD SUMMARY STATISTICS (TON/DAY)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         3.        9.       13.       25.       43.       62.      133.      222.
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.)
 -----------------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)            21.       38.       24.        9.        9.
 
 
 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         9.       10.       11.       11.       12.       12.       13.       13.
 
 PREDICTED LOAD SUMMARY STATISTICS (TON/DAY)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         3.        9.       13.       24.       43.       62.      131.      218.
 
 
 LOAD ESTIMATED BY BEALE RATIO ESTIMATOR
 ---------------------------------------
 
 AVERAGE ANNUAL LOAD (TON/DAY):      21.
1
 
 
 
 STATION NAME:  Upper Iowa River near confluence with Mississippi River                      
 STATION NUMBER:  UI02.9M        
 DRAINAGE AREA:      990.0 SQUARE MILES
 
 CONSTITUENT: Dissolved Silicon                             
 LOAD ESTIMATES FOR   19950101 TO   19970930
 TOTAL NUMBER OF OBS.:    53        NUMBER OF UNCENSORED OBS.:    53
 CALIBRATION DATA PERIOD OF RECORD: 1995 TO 1997
 
 
 CALIBRATION DATA SET STREAMFLOW SUMMARY STATISTICS
       MEAN   MINIMUM  10TH PCT  25TH PCT    MEDIAN  75TH PCT  90TH PCT   MAXIMUM
       540.      167.      232.      296.      400.      619.     1022.     2135.
 
 PREDICTION DATA SET STREAMFLOW SUMMARY STATISTICS
       MEAN   MINIMUM  10TH PCT  25TH PCT    MEDIAN  75TH PCT  90TH PCT   MAXIMUM
       704.      122.      244.      309.      444.      832.     1415.     6456.
 
 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) = + 4.9848E-01 + 1.4213E+00 LN(FLOW) - 2.7585E-01 SIN(DECTIME)
            + 3.6800E-01 COS(DECTIME)
 
 ESTIMATED RESIDUAL VARIANCE =    0.184
 
 TURNBULL-WEISS LIKELIHOOD RATIO NORMALITY TEST STATISTIC =    4.98 (  7 DF)
 PROBABILITY LEVEL =  0.662
 
 
 LINEAR ATTRIBUTION ESTIMATE OF BEST FIT MODEL
 ---------------------------------------------

 LN(LOAD) = + 4.9848E-01 + 1.4213E+00 LN(FLOW) - 2.7585E-01 SIN(DECTIME)
            + 3.6800E-01 COS(DECTIME)
 
 ESTIMATED RESIDUAL VARIANCE =    0.184
 
 
 LEAST ABSOLUTE DEVIATION ESTIMATE OF BEST FIT MODEL
 ---------------------------------------------------

 LN(LOAD) = + 1.1754E+00 + 1.3344E+00 LN(FLOW) - 2.3465E-02 SIN(DECTIME)
            + 3.1863E-01 COS(DECTIME)
 
 
 WARNING: THE MAXIMUM PREDICTED CONCENTRATION EXCEEDS THE MAXIMUM
          OBSERVED SAMPLE CONCENTRATION.
 
1
 
 
 
 STATION:   Upper Iowa River near confluence with Mississippi River    (CONTINUED)
 STATION NUMBER:  UI02.9M        
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (MAXIMUM LIKELIHOOD PARAM. EST.)
 -----------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)            10.       18.       10.        5.        5.
 STD DEV LOAD (TON/DAY)             1.        4.        1.        1.        0.
 
 
 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         3.        4.        4.        5.        6.        7.        9.       10.
 
 PREDICTED LOAD SUMMARY STATISTICS (TON/DAY)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         1.        4.        5.       10.       19.       32.       87.      143.
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (LINEAR ATTRIBUTION PARAM. EST.)
 ----------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)            10.       18.       10.        5.        5.
 
 
 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         3.        4.        4.        5.        6.        7.        9.       10.
 
 PREDICTED LOAD SUMMARY STATISTICS (TON/DAY)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         1.        4.        5.       10.       19.       32.       92.      152.
 
 
 LOADS ESTIMATED BY RATING CURVE METHOD (LEAST ABSOLUTE DEVIATION PARAM. EST.)
 -----------------------------------------------------------------------------
 
                                ANNUAL    SPRING    SUMMER      FALL    WINTER
 AVERAGE LOAD (TON/DAY)            11.       21.       10.        4.        5.
 
 
 PREDICTED CONCENTRATION SUMMARY STATISTICS (MG/L)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         3.        4.        5.        5.        6.        7.        9.       10.
 
 PREDICTED LOAD SUMMARY STATISTICS (TON/DAY)
    MINIMUM  25TH PCT    MEDIAN  75TH PCT  90TH PCT  95TH PCT  99TH PCT   MAXIMUM
         1.        4.        5.       11.       22.       36.       97.      149.
 
 
 LOAD ESTIMATED BY BEALE RATIO ESTIMATOR
 ---------------------------------------
 
 AVERAGE ANNUAL LOAD (TON/DAY):       8.3