RED RIVER OF THE NORTH BASIN

                                              05090000  PARK RIVER AT GRAFTON, ND

LOCATION.--Lat 4825'29", long 9724'42", in NE1/4 sec.13, T.157 N., R.53 W., Walsh County, Hydrologic Unit 09020310, on right
   bank just upstream of U.S. Highway 81 bridge in Grafton, and 3.5 mi downstream from South Branch Park River.

DRAINAGE AREA.--695 mi2, approximately.


                                                    WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--April 1931 to current year. Monthly discharge only for some periods, published in WSP 1308.

REVISED RECORDS.--WSP 955: 1941. WSP 1438: 1932, 1933(M), 1936-37(M), 1939(M), 1944. WSP 1728: Drainage area.

GAGE.--Water-stage recorder. Datum of gage is 811.00 ft above sea level. Prior to Oct. 1, 1984, gage located on right bank 30 ft
   upstream of Wakeman Avenue bridge. Datum of gage was 807.39 ft. Prior to Sept. 30, 1940, nonrecording gage at site 30 ft
   downstream at same datum. Oct. 1, 1940, to Sept. 17, 1946, nonrecording gage at site 2 mi downstream above masonry dam at
   same datum. Sept. 18, 1946, to July 25, 1952, nonrecording gage at site 30 ft downstream at same datum.

REMARKS.--Records good except for periods where discharge is less than 3.0 ft3/s and those for estimated daily discharges, which
   are poor.

                          DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000
                                                       DAILY MEAN VALUES

        DAY       OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

          1       .65      1.8     e2.6     e2.4     e2.0     e6.0      5.4      6.6      3.9      3.9      4.4     1.8
          2       .53      1.6     e2.6     e2.4     e2.0     e6.2      8.9      6.7      3.8      3.8      4.0     1.6
          3       .43      2.9     e2.7     e2.4     e2.0     e6.2      7.8      7.5      3.6      3.8      3.8     1.5
          4       .38      5.2     e2.7     e2.4     e2.0     e6.2      7.1      6.7      6.0      4.0      3.6     1.3
          5       .35      4.6     e2.7     e2.4     e2.0     e6.2      8.9      6.3      9.9      4.1      4.0     1.2

          6       .32      4.3     e2.7     e2.4     e2.0     e6.2      7.2      6.3      9.9      3.7      3.5     1.1
          7       .30      4.2     e2.7     e2.4     e2.0     e6.2      9.4      6.2     10        3.9      3.0     1.1
          8       .28      4.1     e2.7     e2.4     e2.0     e6.2      7.5      6.1     10        4.1      3.0      .95
          9       .27      4.0     e2.7     e2.4     e2.0     e6.2      5.0      5.8     10        4.1      2.9      .89
         10       .29      3.7     e2.7     e2.4     e2.0     e6.3      5.7      6.2     11        3.7      2.6      .80

         11       .31      3.6     e2.7     e2.4     e1.9     e6.6      5.6      6.8      8.4      3.5      2.4      .69
         12       .34      3.5     e2.7     e2.4     e1.9     e7.1      4.9      6.6    154        3.6      3.1      .65
         13       .38      3.5     e2.7     e2.4     e1.9     e7.3      4.5      6.1    346        4.0      2.9      .54
         14       .45      3.2     e2.7     e2.3     e1.9     e7.2      4.4      6.2    180        3.8      2.7      .44
         15       .58      3.1     e2.7     e2.3     e1.8     e7.2      4.5      6.8     86        3.5      2.4      .39

         16       .63      2.8     e2.7     e2.3     e1.8     e7.2      4.9      6.9     71       25        2.2      .34
         17       .68      2.8     e2.7     e2.3     e1.8      7.2      4.5      7.0     33       37        2.0      .31
         18       .85      2.7     e2.6     e2.2     e1.7      7.5      4.4      6.8     21       39        1.8      .29
         19      1.1       2.4     e2.6     e2.2     e1.7      8.0      4.5      6.5     12       40        1.7      .28
         20      1.3       2.3     e2.6     e2.2     e1.7      8.5      4.4      5.9      8.1     29        1.9      .27

         21      1.6       2.2     e2.5     e2.2     e1.8      8.3      4.8      5.8      9.7     35        3.2      .24
         22      2.0       2.3     e2.5     e2.1     e2.0      8.4      5.1      6.0      9.7     58        3.1      .25
         23      2.1       2.3     e2.5     e2.1     e2.3      8.8      4.5      6.1      8.3     60        2.7      .25
         24      2.1       2.3     e2.5     e2.0     e2.7     11        5.7      6.2      9.4     59        2.4      .24
         25      2.1       2.3     e2.4     e2.0     e3.8     12        6.3      5.7      7.9     57        2.2      .23

         26      1.9       2.3     e2.4     e2.0     e4.4     16        5.9      5.1      6.4     59        2.0      .21
         27      2.0       2.2     e2.4     e2.0     e5.1     15        6.8      5.3      5.1     52        1.8      .19
         28      2.0       2.3     e2.4     e2.0     e5.8     13        6.4      5.1      4.7     56        1.9      .16
         29      1.9       2.4     e2.4     e2.0     e5.9      8.5      6.7      5.2      4.2     39        2.1      .15
         30      1.8      e2.6     e2.4     e2.0      ---      7.5      6.7      5.2      4.1     11        2.1      .13
         31      1.7       ---     e2.4     e2.0      ---      6.4      ---      4.5      ---      5.3      1.9      ---

        TOTAL   31.62     89.5     80.3     69.4     71.9    250.6    178.4    190.2   1067.1    718.8     83.3    18.49
        MEAN     1.02     2.98     2.59     2.24     2.48     8.08     5.95     6.14     35.6     23.2     2.69      .62
        MAX       2.1      5.2      2.7      2.4      5.9       16      9.4      7.5      346       60      4.4      1.8
        MIN       .27      1.6      2.4      2.0      1.7      6.0      4.4      4.5      3.6      3.5      1.7      .13
        AC-FT      63      178      159      138      143      497      354      377     2120     1430      165       37

        STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1931 - 2000, BY WATER YEAR (WY)

        MEAN     5.12     3.55     2.42     1.39     2.58     78.3      416      118     46.0     34.0     13.5     7.10
        MAX      69.9     31.3     17.4     13.9     45.7      654     2051     2071      576      441      569      151
        (WY)     1983     1981     1983     1983     1981     1995     1950     1950     1964     1997     1993     1957
        MIN      .000     .000     .000     .000     .000     .000     .000     2.05     .000     .000     .000     .000
        (WY)     1934     1934     1933     1932     1933     1936     1991     1939     1961     1990     1932     1932

        SUMMARY STATISTICS           FOR 1999 CALENDAR YEAR        FOR 2000 WATER YEAR           WATER YEARS 1931 - 2000

        ANNUAL TOTAL                       34446.30                    2849.61
        ANNUAL MEAN                           94.4                        7.79                      60.7
        HIGHEST ANNUAL MEAN                                                                        353              1950
        LOWEST ANNUAL MEAN                                                                           1.38           1990
        HIGHEST DAILY MEAN                  2180     Apr 10             346     Jun 13           11700       Apr 19 1950
        LOWEST DAILY MEAN                       .27  Oct  9                .13  Sep 30                .00    Aug 10 1931
        ANNUAL SEVEN-DAY MINIMUM                .30  Oct  6                .19  Sep 24                .00    Aug 21 1931
        INSTANTANEOUS PEAK FLOW                                         690     Jun 12         a 12600       Apr 19 1950
        INSTANTANEOUS PEAK STAGE                                          9.09  Jun 12            b 20.13    Apr 19 1950
        ANNUAL RUNOFF (AC-FT)              68320                       5650                      43980
        10 PERCENT EXCEEDS                   268                          9.5                       77
        50 PERCENT EXCEEDS                     4.0                        2.9                        1.8
        90 PERCENT EXCEEDS                     1.9                         .69                        .00

        a  From rating curve extended above 9,000 ft3/s
        b  Site and datum then in use
        e  Estimated
        
        
                                                     WATER-QUALITY RECORDS

PERIOD OF RECORD.--Water year 1969 to current year.

                                 WATER-QUALITY DATA, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000

                                DIS-     DIS-     PH       PH       SPE-
                              CHARGE,  CHARGE,   WATER    WATER    CIFIC    SPE-                       HARD-
                                 IN     INST.    WHOLE    WHOLE     CON-    CIFIC                      NESS    CALCIUM
                               CUBIC    CUBIC    FIELD     LAB     DUCT-    CON-    TEMPER-  TEMPER-   TOTAL    DIS-
                                FEET     FEET   (STAND-  (STAND-   ANCE     DUCT-    ATURE    ATURE    (MG/L    SOLVED
             DATE      TIME     PER      PER      ARD      ARD      LAB     ANCE      AIR     WATER     AS      (MG/L
                               SECOND   SECOND   UNITS)   UNITS)  (US/CM)  (US/CM)  (DEG C)  (DEG C)   CACO3)   AS CA)
                              (00060)  (00061)  (00400)  (00403)  (90095)  (00095)  (00020)  (00010)  (00900)  (00915)

         OCT
           06...       1700      .32      --       --       --       --     1220      9.0      7.0       --       --
         NOV
           18...       0940     2.7       --       --       --       --     1670      -.5      3.5       --       --
         JAN
           24...       1630      --      2.0       --       --       --     2110     -6.0       .5       --       --
         MAR
           14...       1605     7.2       --       --       --       --     1220     -1.5      2.5       --       --
         APR
           26...       1515      --      6.4      8.4       --     1240     1230     20.5     15.5      430     96.0
         MAY
           17...       1430      --      6.8       --       --       --     1370     20.5     15.0       --       --
         JUL
           14...       1500      --      3.8       --       --       --     1280     32.0     28.0       --       --
         AUG
           31...       1200      --       .85     7.9      7.7      910      874     18.0     18.0      330     71.0


                                                                    ANC                                        SOLIDS,
                      MAGNE-   POTAS-   SODIUM                    UNFLTRD   CHLO-    FLUO-            SOLIDS,  RESIDUE
                       SIUM,    SIUM,     AD-   SODIUM,           TIT 4.5   RIDE,    RIDE,   SULFATE    DIS-   AT 180
                       DIS-     DIS-    SORP-    DIS-               LAB     DIS-      DIS-    DIS-     SOLVED   DEG. C
                      SOLVED   SOLVED    TION   SOLVED             (MG/L    SOLVED   SOLVED   SOLVED   (TONS     DIS-
             DATE     (MG/L    (MG/L    RATIO    (MG/L    SODIUM    AS      (MG/L    (MG/L    (MG/L     PER     SOLVED
                      AS MG)   AS K)             AS NA)  PERCENT   CACO3)   AS CL)   AS F)   AS SO4)    DAY)    (MG/L)
                     (00925)  (00935)  (00931)  (00930)  (00932)  (90410)  (00940)  (00950)  (00945)  (70302)  (70300)

         OCT
           06...        --       --       --       --       --       --       --       --       --       --       --
         NOV
           18...        --       --       --       --       --       --       --       --       --       --       --
         JAN
           24...        --       --       --       --       --       --       --       --       --       --       --
         MAR
           14...        --       --       --       --       --       --       --       --       --       --       --
         APR
           26...      45.0      8.5       2      110       35       244     69.0       .3      320     14.5      833
         MAY
           17...        --       --       --       --       --       --       --       --       --       --       --
         JUL
           14...        --       --       --       --       --       --       --       --       --       --       --
         AUG
           31...      38.0      9.1       2       63.0     28       172     32.0      2.0      230      1.37     596


                          SOLIDS,
                          SUM OF                                        MANGA-            MOLYB-   SELE-    STRON-
                          CONSTI-  ARSENIC   IRON,    LEAD,   LITHIUM   NESE,   MERCURY   DENUM,   NIUM,     TIUM,
                          TUENTS,    DIS-     DIS-     DIS-     DIS-     DIS-     DIS-     DIS-     DIS-     DIS-
                            DIS-    SOLVED   SOLVED   SOLVED   SOLVED   SOLVED   SOLVED   SOLVED   SOLVED   SOLVED
                  DATE     SOLVED   (UG/L    (UG/L    (UG/L    (UG/L    (UG/L    (UG/L    (UG/L    (UG/L    (UG/L
                           (MG/L)   AS AS)   AS FE)   AS PB)   AS LI)   AS MN)   AS HG)   AS MO)   AS SE)   AS SR)
                          (70301)  (01000)  (01046)  (01049)  (01130)  (01056)  (71890)  (01060)  (01145)  (01080)

              OCT
                06...        --       --       --       --       --       --       --       --       --       --
              NOV
                18...        --       --       --       --       --       --       --       --       --       --
              JAN
                24...        --       --       --       --       --       --       --       --       --       --
              MAR
                14...        --       --       --       --       --       --       --       --       --       --
              APR
                26...       796      2.0       10       1      60.0      380      <.1       2      <1.0      550
              MAY
                17...        --       --       --       --       --       --       --       --       --       --
              JUL
                14...        --       --       --       --       --       --       --       --       --       --
              AUG
                31...       549      8.0      110       1      50.0       20      <.1       4       1.0      370

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