RED RIVER OF THE NORTH BASIN

                                      05082500  RED RIVER OF THE NORTH AT GRAND FORKS, ND

LOCATION.--Lat 4755'39", long 9701'40", in sec.2, T.151 N., R.50 W., Polk County, MN, Hydrologic Unit 09020301, on right bank
   30 ft downstream from the DeMers Avenue bridge, 0.4 mi downstream from Red Lake River, and at mile 297.6.

DRAINAGE AREA.--30,100 mi2, approximately, including 3,800 mi2 in closed basins.


                                                    WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--April 1882 to current year. Prior to January 1904 monthly discharge only, published in WSP 1308.

REVISED RECORDS.--WSP 855: 1936(M). WSP 1115: 1942. WSP 1175: 1897(M). WSP 1388: 1904, 1914-15, 1917-19, 1921-22, 1927, 1950.
   WSP 1728: Drainage area. WRD-ND-81-1: 1882, 1897 (M).

GAGE.--Water-stage recorder. Datum of gage is 779.00 ft above National Geodetic Vertical Datum of 1929. Oct. 1, 1983, to Sept.
   30, 1986, datum of gage was 780.00 ft at same site. Apr. 14, 1965, to Sept. 30, 1983, water-stage recorder 1.9 mi downstream
   at a datum of 778.35 ft. Nov. 3, 1933, to Apr. 13, 1965, water-stage recorder 0.3 mi upstream at 778.35 ft datum. See WSP
   1728 or 1913 for history of changes prior to Nov. 3, 1933.

REMARKS.--Records good except for periods of estimated discharge, 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      5910    e3750    e3200    e2300    e1700    e3500     6730     5000     3260    27400     4580    e2100
          2      5610    e3700    e3400    e2250    e1700    e4500     6210     4900     3270    25700     5180    e2300
          3      5230    e3700    e3500    e2250    e1700    e6000     5860     4780     3210    23600     4570    e2500
          4      5040     3680    e3500    e2250    e1700    e7200     5660     4700     3160    20900     3780    e3000
          5      4890    e3650    e3300    e2250    e1700    e8200     5710     4650     3090    17500     3530    e4300

          6      4760    e3700    e2800    e2200    e1700    e8900     5750     4550     3110    13200     3290    e5000
          7      4560     3760     2460    e2200    e1700    e9200     5720     4470     3170     9740     3120    e5000
          8      4440    e3730     2190    e2200    e1700    e9800     5720     4380     3190     9670     3210    e4700
          9      4420     3700     2230    e2200    e1700   e10200     5740     4160     3240    12600     2970    e4000
         10      4590     3750     2420    e2200    e1700   e10500     5610     4100     3250    14800     2880    e3400

         11      4620     3940     2540    e2150    e1700   e10500     5450     4100     3190    15400    e2700    e3000
         12      4620     3770     2690    e2100    e1700   e10200     5260     4160     3090    14800    e2600    e2700
         13      4610     3690     2790    e2100    e1700   e10000     5140     4160     3070    13300    e2500    e2500
         14      4570     3750     2990    e2050    e1700    e9500     5090     4170     3100    11400    e2450    e2300
         15      4530     3780     3040    e2050    e1700    e9000     5060     4230     2990     9670    e2450    e2200

         16      4500     3800    e2650    e2000    e1680    e8200     5030     4220     3320     7900    e2500    e2100
         17      4470     3840     2460    e2000    e1680    e7200     5020     4210     3820     7010    e2650    e2100
         18      4440     3910     2350    e2000    e1680     6540     5090     4250     4560     6600    e2750    e2100
         19      4390     3950     2200    e2000    e1680     6070     5170     4180     5980     6180    e2750    e2100
         20      4340     3960     2130    e1950    e1680     5680     5130     4100     7940     5820    e2700    e2100

         21      4200     3950     1970    e1950    e1680     5370     5060     4020    13200     5470     2660    e2100
         22      4150     3960     1930    e1900    e1750     5480     5010     3890    20400     5160     2500    e2100
         23      4140     3980     1970    e1900    e1850     6110     5030     3750    25100     4990     2420    e2100
         24      4130     3950    e2000    e1850    e1900     6510     5140     3660    28400     4860     2420    e2100
         25      4050     3950    e2200    e1850    e2000     7150     5320     3610    30600     4720     2390    e2150

         26      4000     3930    e2400    e1800    e2250     8870     5420     3540    31400     4520     2370    e2350
         27      3900     3860    e2500    e1800    e2500    10600     5440     3460    31300     4410     2230    e2600
         28      3830     3780    e2500    e1750    e3000    11200     5350     3460    30800     4310     2180    e2950
         29      3740     3160    e2450    e1750    e3250    10000     5240     3400    29900     4210    e2150    e3000
         30      3730     2980    e2400    e1700      ---     8570     5110     3360    28800     4140    e2150    e2900
         31      3750      ---    e2350    e1700      ---     7420      ---     3300      ---     4180    e2100      ---

        TOTAL  138160   113010    79510    62650    54080   248170   162270   126920   342910   324160    88730    83850
        MEAN     4457     3767     2565     2021     1865     8005     5409     4094    11430    10460     2862     2795
        MAX      5910     3980     3500     2300     3250    11200     6730     5000    31400    27400     5180     5000
        MIN      3730     2980     1930     1700     1680     3500     5010     3300     2990     4140     2100     2100
        AC-FT  274000   224200   157700   124300   107300   492200   321900   251700   680200   643000   176000   166300

        STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1904 - 2000, BY WATER YEAR (WY)

        MEAN     1477     1266     1037      864      848     2790    10070     5507     4140     3592     1825     1563
        MAX      5127     5218     3571     2030     3520    15370    56210    36510    19340    25270    17050    11340
        (WY)     1995     1972     1999     1996     1998     1995     1997     1950     1962     1975     1993     1999
        MIN      12.1     30.5     17.8     18.8     2.87     42.1      954      373      151     88.8     30.6     20.3
        (WY)     1937     1937     1937     1937     1937     1937     1938     1934     1934     1936     1934     1936

        SUMMARY STATISTICS           FOR 1999 CALENDAR YEAR        FOR 2000 WATER YEAR           WATER YEARS 1904 - 2000

        ANNUAL TOTAL                     3079680                    1824420
        ANNUAL MEAN                         8437                       4985                       2899
        HIGHEST ANNUAL MEAN                                                                      10070              1997
        LOWEST ANNUAL MEAN                                                                         244              1934
        HIGHEST DAILY MEAN                 49700     Apr  1           31400     Jun 26          127000       Apr 18 1997
        LOWEST DAILY MEAN                   1500     Feb 10            1680     Feb 16               1.8     Sep  2 1977
        ANNUAL SEVEN-DAY MINIMUM            1510     Feb  8            1680     Feb 15               2.5     Feb 12 1937
        INSTANTANEOUS PEAK FLOW                                       31500     Jun 26        a 137000       Apr 18 1997
        INSTANTANEOUS PEAK STAGE                                         37.14  Jun 28            b 54.35    Apr 22 1997
        ANNUAL RUNOFF (AC-FT)            6109000                    3619000                    2100000
        10 PERCENT EXCEEDS                 20800                       9060                       6370
        50 PERCENT EXCEEDS                  4930                       3750                       1400
        90 PERCENT EXCEEDS                  1710                       1950                        281

        a  Maximum observed, affected by breakout from Red River about 20 miles upstream of gage that entered Red Lake
             River about 2 miles upstream of confluence with the Red River
        b  From floodmark
        e  Estimated
        
        
                                                     WATER-QUALITY RECORDS

PERIOD OF RECORD.--Water years 1949, 1956 to current year.


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

                                     DIS-     PH       SPE-
                                   CHARGE,   WATER    CIFIC    SPE-                       HARD-             MAGNE-
                                    INST.    WHOLE     CON-    CIFIC                      NESS    CALCIUM    SIUM,
                                    CUBIC    FIELD    DUCT-    CON-    TEMPER-  TEMPER-   TOTAL    DIS-      DIS-
                                     FEET   (STAND-   ANCE     DUCT-    ATURE    ATURE    (MG/L    SOLVED   SOLVED
                  DATE      TIME     PER      ARD      LAB     ANCE      AIR     WATER     AS      (MG/L    (MG/L
                                    SECOND   UNITS)  (US/CM)  (US/CM)  (DEG C)  (DEG C)   CACO3)   AS CA)   AS MG)
                                   (00061)  (00400)  (90095)  (00095)  (00020)  (00010)  (00900)  (00915)  (00925)

              OCT
                13...       1105     4660      --       --      569     13.0      9.0       --       --       --
              FEB
                22...       1155     1790      --       --      612     11.5       .5       --       --       --
              MAR
                27...       0915    10400      --       --      698     -2.0      5.0       --       --       --
              MAY
                01...       1130     5020     8.4       --      740     16.5     14.0      350     73.0     40.0
                23...       1030     3720      --       --      800     21.5     17.0       --       --       --
              JUN
                25...       0915    30000     8.0      394      391     17.0     19.0      180     44.0     18.0
              SEP
                26...       1140     2360      --       --      653     13.0     12.5       --       --       --


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

              OCT
                13...        --       --       --       --       --       --       --       --       --       --
              FEB
                22...        --       --       --       --       --       --       --       --       --       --
              MAR
                27...        --       --       --       --       --       --       --       --       --       --
              MAY
                01...       5.0       .7     30.0      16       242     19.0       .1     150       6610     488
                23...        --       --       --       --       --       --       --       --       --       --
              JUN
                25...       4.2       .3      9.0       9       140      7.7       .2      61.0    20600     254
              SEP
                26...        --       --       --       --       --       --       --       --       --       --


                          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
                13...        --       --       --       --       --       --       --       --       --       --
              FEB
                22...        --       --       --       --       --       --       --       --       --       --
              MAR
                27...        --       --       --       --       --       --       --       --       --       --
              MAY
                01...       463      3.0      20        4      30.0      10       <.1      <1      <1.0      340
                23...        --       --       --       --       --       --       --       --       --       --
              JUN
                25...       228      5.0      70        1      20.0      40       <.1       2       2.0      230
              SEP
                26...        --       --       --       --       --       --       --       --       --       --
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