MISSOURI RIVER MAIN STEM

                                            06342500  MISSOURI RIVER AT BISMARCK, ND

LOCATION.--Lat 4648'51", long 10049'12", in SE1/4NW1/4SE1/4 sec.31, T.139 N., R.80 W., Burleigh County, Hydrologic Unit
   10130101, on left bank 40 ft upstream from Bismarck City waterplant, 2,100 ft downstream from Burlington Northern Railway
   bridge, 1.6 mi northwest of Bismarck Post Office, 3.5 mi upstream from Heart River and at mile 1,314.5.

DRAINAGE AREA.--186,400 mi2, approximately.

                                                    WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--October to November 1927, April 1928 to current year. See WSP 1729 or 1917 for history of data prior to April

GAGE.--Water-stage recorder. Datum of gage is 1,618.28 ft above sea level, revised. See WSP 1729 or 1917 for history of changes
   prior to Sept. 30, 1937.

REMARKS.--Records good except for periods of estimated discharge, which are fair. Flow regulated by Lake Sakakawea (station
   06338000), 75.4 mi upstream, since November 1953.

EXTREMES PRIOR TO COMPLETION OF GARRISON DAM.--Maximum discharge, 500,000 ft3/s, Apr. 6, 1952, gage height, 27.90 ft.

EXTREMES SINCE COMPLETION OF GARRISON DAM.--Since completion of Garrison Dam in 1953, maximum discharge, 68,900 ft3/s, July 13,
   1975, gage height, 14.24 ft; maximum gage height, 14.58 ft, Dec. 18, 1979, backwater from ice.

EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum stage known, 31.6 ft, Mar. 31, 1881, present site and datum.

                          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     24100    16900    20200   e23400   e24700    26600    17200    18000    26000    24900    25000    24200
          2     25400    18800    21100   e22800   e25800    26800    16900    18200    25900    25000    24900    24200
          3     26400    17900    21200   e22900   e25700    26500    17300    18300    25500    25100    25100    24600
          4     24600    18300    21300   e22700   e25600    26200    17100    18000    25700    24900    24800    24200
          5     23700    18600    18500   e22400   e26300    25300    19000    18100    26200    25300    24900    24900

          6     20700    17100    18700   e21400   e25800    24700    19900    17900    25800    25200    24800    25100
          7     20100    17800    18200   e21300   e25800    24000    19800    18300    25700    25000    24500    24800
          8     19600    17500    18300   e21500   e25800    22800    20300    18400    26100    24900    24700    24400
          9     19100    18000    19200   e21200   e25800    20800    20300    18000    25900    25000    24500    24500
         10     18500    17500    18700   e21300   e25800    19400    20200    17700    25600    24800    24500    24500

         11     19400    18100    18900   e21000   e26100    18900    20500    18300    25300    25100    24500    23800
         12     18800    18800    18800   e21100   e26000    18200    21100    18600    24800    25000    24800    19700
         13     19300    17800    18600   e21400   e25900    18500    20500    18000    25200    24900    24600    17100
         14     20200    18200    18900   e21400   e25600    18800    20300    19200    25700    24700    24400    16300
         15     18600    17700    18400   e21500   e25700    18700    21400    22300    25700    24800    24600    16100

         16     18800    17300    18500   e21400   e25600    18000    20900    24600    26000    25100    24600    16100
         17     21600    18000    18500   e20300   e25800    17700    20900    25400    25800    24700    24700    16000
         18     19300    18900    18600   e20400   e25700    18200    21100    25700    25500    24800    24700    16700
         19     18600    17900    20300   e21100   e25700    18100    20300    25900    25400    24900    24500    17100
         20     19100    17800    22400   e21300   e25600    18200    20700    25800    25400    24900    24900    17300

         21     19200    18100   e23000   e21600   e26100    17700    20700    25600    25400    25000    24800    16500
         22     18200    17900   e24000   e21300   e26200    17600    21200    25300    25100    24900    24800    16500
         23     18900    18100   e22800   e22400   e25800    17700    20100    25700    25200    24800    24500    16000
         24     19800    17600   e21400   e22500   e25700    17600    20300    26100    25300    24900    24500    16200
         25     19600    17900   e21200   e22600   e25500    17500    20400    25800    25300    24900    24800    15600

         26     18700    17400   e21600   e22300   e26200    17400    20600    25400    25000    24800    24400    15800
         27     19600    17700   e21700   e23800   e27200    17000    20900    26000    24900    24900    24500    15800
         28     19900    18100   e21500   e23900    27100    17200    20600    26100    24900    25000    24700    16300
         29     19400    18200   e22500   e23400    26900    17600    19400    25700    24900    25000    24600    15700
         30     19000    19200   e23100   e24400      ---    17400    18300   e25700    25000    24800    24500    16000
         31     19100      ---   e23000   e24900      ---    17400      ---   e25900      ---    25100    24500      ---

        TOTAL  627300   539100   633100   684900   751500   618500   598200   688000   764200   773100   764600   582000
        MEAN    20240    17970    20420    22090    25910    19950    19940    22190    25470    24940    24660    19400
        MAX     26400    19200    24000    24900    27200    26800    21400    26100    26200    25300    25100    25100
        MIN     18200    16900    18200    20300    24700    17000    16900    17700    24800    24700    24400    15600
        AC-FT 1244000  1069000  1256000  1358000  1491000  1227000  1187000  1365000  1516000  1533000  1517000  1154000

        STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1954 - 2000, BY WATER YEAR (WY)

        MEAN    21660    21520    20890    23040    25230    22830    21630    23200    24610    25620    25410    22520
        MAX     48180    43240    31690    32350    34840    34370    40370    42030    43540    64610    57010    45060
        (WY)     1998     1998     1970     1969     1969     1972     1972     1972     1975     1975     1975     1997
        MIN      8399     8155     7890     6519     5883     6317    10420     9234     8445    10840     9271     8121
        (WY)     1963     1963     1955     1955     1956     1955     1993     1963     1960     1960     1962     1962

        SUMMARY STATISTICS           FOR 1999 CALENDAR YEAR        FOR 2000 WATER YEAR         a WATER YEARS 1954 - 2000
        
        ANNUAL TOTAL                     9181600                    8024500
        ANNUAL MEAN                        25160                      21920                      23170
        HIGHEST ANNUAL MEAN                                                                      35630              1975
        LOWEST ANNUAL MEAN                                                                       14320              1960
        HIGHEST DAILY MEAN                 33000     Mar 20           27200     Feb 27           68800       Jul 13 1975
        LOWEST DAILY MEAN                  16900     Nov  1           15600     Sep 25            4000       Mar 25 1955
        ANNUAL SEVEN-DAY MINIMUM           17800     Nov  5           15900     Sep 23            4860       Mar 21 1955
        INSTANTANEOUS PEAK FLOW                                       27500     Feb 28           68900       Jul 13 1975
        INSTANTANEOUS PEAK STAGE                                       b 13.01  Jan 15              14.80    Jan 13 1983
        ANNUAL RUNOFF (AC-FT)           18210000                   15920000                   16790000
        10 PERCENT EXCEEDS                 29800                      25800                      34200
        50 PERCENT EXCEEDS                 25700                      22000                      22100
        90 PERCENT EXCEEDS                 18600                      17600                      12100

        a  Since completion of Garrison Dam
        b  Backwater from ice
        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-    BARO-   OXYGEN,             PH       PH       SPE-
                              CHARGE,  CHARGE,   METRIC    DIS-             WATER    WATER    CIFIC    SPE-
                                 IN     INST.    PRES-    SOLVED            WHOLE    WHOLE     CON-    CIFIC
                               CUBIC    CUBIC     SURE    (PER-   OXYGEN,   FIELD     LAB     DUCT-    CON-    TEMPER-
                                FEET     FEET     (MM      CENT     DIS-   (STAND-  (STAND-   ANCE     DUCT-    ATURE
             DATE      TIME     PER      PER       OF     SATUR-   SOLVED    ARD      ARD      LAB     ANCE      AIR
                               SECOND   SECOND    HG)     ATION)   (MG/L)   UNITS)   UNITS)  (US/CM)  (US/CM)  (DEG C)
                              (00060)  (00061)  (00025)  (00301)  (00300)  (00400)  (00403)  (90095)  (00095)  (00020)

         OCT
           29...       1415      --     18947      --       --       --       --      8.4      666      642       --
         NOV
           10...       1200      --     16700     715      102     11.2       --      8.4      679      654       --
         MAR
           03...       1245      --     26200     712       91     11.5       --      8.1      672      675       --
         APR
           03...       1300      --     17800      --       --       --       --      8.3      625      638       --
           26...       1105      --     20700     711      103     11.5      7.9      8.0      628      650       --
         MAY
           18...       1300      --     26600      --       --     11.7      7.9      7.9      646      662       --
         JUN
           12...       1000    24800      --       --       --       --      8.3       --      614      616     23.0
         JUL
           19...       1150      --     23300      --       --       --       --      8.3      609      620       --
         AUG
           17...       1130      --     24000      --       --       --       --      8.2      631      601     19.5
         SEP
           12...       1200      --     18500      --       --       --       --      8.0      627      630       --


                                                                                               ANC
                               HARD-             MAGNE-   POTAS-   SODIUM                    UNFLTRD   CHLO-
                               NESS    CALCIUM    SIUM,    SIUM,     AD-   SODIUM,           TIT 4.5   RIDE,   SULFATE
                     TEMPER-   TOTAL    DIS-      DIS-     DIS-    SORP-    DIS-               LAB     DIS-     DIS-
                      ATURE    (MG/L    SOLVED   SOLVED   SOLVED    TION   SOLVED             (MG/L    SOLVED   SOLVED
             DATE     WATER     AS      (MG/L    (MG/L    (MG/L    RATIO    (MG/L    SODIUM    AS      (MG/L    (MG/L
                     (DEG C)   CACO3)   AS CA)   AS MG)   AS K)             AS NA)  PERCENT   CACO3)   AS CL)  AS SO4)
                     (00010)  (00900)  (00915)  (00925)  (00935)  (00931)  (00930)  (00932)  (90410)  (00940)  (00945)

         OCT
           29...       9.0      220      53       22       4.0       2       58       36       160      9.4      170
         NOV
           10...       8.5      210      50       21       3.8       2       57       36       160      9.4      170
         MAR
           03...       2.9      200      49       20       4.7       2       62       39       150      8.4      180
         APR
           03...       4.3      200      47       19       3.5       2       53       37       150      8.2      170
           26...       7.3      200      48       20       3.5       2       56       37       150      8.3      170
         MAY
           18...      10.8      210      50       21       3.8       2       59       37       150      8.3      180
         JUN
           12...      14.7      200      48       19       3.7       2       54       37       150      7.9      160
         JUL
           19...      15.0      190      46       18       3.3       2       50       36       150      8.3      160
         AUG
           17...      14.9      200      47       19       3.4       2       50       35       160      8.7      160
         SEP
           12...      15.9      210      51       20       3.6       2       53       35       150      8.7      160


                      NITRO-   NITRO-            NITRO-   NITRO-
                     GEN,AM-  GEN,AM-   NITRO-    GEN,     GEN,    NITRO-   NITRO-            NITRO-   PHOS-
                     MONIA +  MONIA +    GEN,   AMMONIA  NO2+NO3    GEN,     GEN,    NITRO-    GEN    PHORUS    PHOS-
                     ORGANIC  ORGANIC  AMMONIA    DIS-     DIS-   NO2+NO3  ORGANIC    GEN,    DIS-      DIS-   PHORUS
                      DIS.     TOTAL    TOTAL    SOLVED   SOLVED   TOTAL    TOTAL    TOTAL   SOLVED    SOLVED   TOTAL
             DATE     (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L
                      AS N)    AS N)    AS N)    AS N)    AS N)    AS N)    AS N)    AS N)    AS N)    AS P)    AS P)
                     (00623)  (00625)  (00610)  (00608)  (00631)  (00630)  (00605)  (00600)  (00602)  (00666)  (00665)

         OCT
           29...       .16      .17     <.01       --       --      .05       --      .22       --     <.01      .03
         NOV
           10...       .12      .20     <.01      <.01      .07     .07       --      .27       .19    <.01      .02
         MAR
           03...       .13      .20      .02      <.01      .17     .19       .18     .39       .30    <.01      .03
         APR
           03...      <.08      .15      .04      <.01      .07     .10       .11     .25       --     <.01      .03
           26...       .21      .22     <.01      <.01      .07     .07       --      .29       .28    <.01      .05
         MAY
           18...      <.08      .10     <.01       --       .06     .05       --      .15       --     <.01      .05
         JUN
           12...       .26      .26     <.01      <.01      .06     .06       --      .32       .32    <.01     <.02
         JUL
           19...       .29      .20      .14      <.01      .02     .11       .06     .31       .31    <.01     <.02
         AUG
           17...       .17      .18     <.01      <.01      .07     .06       --      .24       .24    <.01     <.02
         SEP
           12...       .15      .21     <.01      <.01      .05     .06       --      .27       .20     .02      .03


                              SOLIDS,
                     SOLIDS,  SUM OF   ALUMI-                               BERYL-                     CHRO-
                       DIS-   CONSTI-    NUM,    ANTI-            BARIUM,    LIUM   BORON,   CADMIUM   MIUM,   COPPER,
                      SOLVED  TUENTS,   TOTAL    MONY,   ARSENIC   TOTAL    TOTAL    TOTAL    TOTAL    TOTAL    TOTAL
                      (TONS     DIS-   RECOVER   TOTAL    TOTAL   RECOVER  RECOVER  RECOVER  RECOVER  RECOVER  RECOVER
             DATE      PER     SOLVED   -ABLE    (UG/L    (UG/L    -ABLE    -ABLE    -ABLE    -ABLE    -ABLE    -ABLE
                       DAY)    (MG/L)   (UG/L)   AS SB)   AS AS)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)
                     (70302)  (70301)  (01104)  (01097)  (01002)  (01009)  (00998)  (00999)  (01113)  (01118)  (01119)

         OCT
           29...      21400     419      540      <1        2       67       <1       150      <1       <1        3
         NOV
           10...      18400     407      270      <1        2       51       <1       180      <1       <1        3
         MAR
           03...      29300     415      690      <1        2       72       <1       170      <1       <1        4
         APR
           03...      18700     391      330      <1        2       54       <1       120      <1       <1        1
           26...      22100     396      310      <1        2       57       <1       200      <1       <1        1
         MAY
           18...      29600     412      480      <1        2       61       <1       170      <1       <1        1
         JUN
           12...      25600     383      360      <1        2       55       <1       160      <1       <1        1
         JUL
           19...      23600     376       92      <1        2       49       <1       190      <1       <1        1
         AUG
           17...      24900     384      140      <1        2       53       <1       140      <1       <1        4
         SEP
           12...      19300     386       --       --       --       --       --       --       --       --       --


                                                                            THAL-                      SEDI-     SED.
                      IRON,            MANGAN-                              LIUM,                      MENT,     SUSP.
                      TOTAL    LEAD,     ESE    NICKEL,   SELE-   SILVER,   TOTAL    ZINC,    SEDI-     DIS-    SIEVE
                      RECOV-   TOTAL    TOTAL    TOTAL    NIUM,    TOTAL    RECOV-   TOTAL    MENT,   CHARGE,    DIAM.
                      ERABLE  RECOVER  RECOVER  RECOVER   TOTAL   RECOVER   ERABLE  RECOVER   SUS-      SUS-   % FINER
             DATE     (UG/L    -ABLE   - ABLE    -ABLE    (UG/L    -ABLE    (UG/L    -ABLE    PENDED   PENDED    THAN
                      AS FE)   (UG/L)   (UG/L)   (UG/L)   AS SE)   (UG/L)   AS TL)   (UG/L)   (MG/L)  (T/DAY)  .062 MM
                     (01045)  (01114)  (01123)  (01074)  (01147)  (01079)  (01128)  (01094)  (80154)  (80155)  (70331)

         OCT
           29...       830       1        12       4        2       <1       <1        8        46      2350     64
         NOV
           10...       410      <1       <10       3       <1       <1       <1        7        40      1800     30
         MAR
           03...       880      <1        17       3        1       <3       <1       14        77      5450     31
         APR
           03...       470      <1       <10       3       <1       <3       <1        5        --       --       --
           26...       540      <1       <10       4       <1       <1       <1        6        87      4860     10
         MAY
           18...       820       5        15       4        1       <1       <1       13       177     12700     15
         JUN
           12...       500      <1        10       3        1       <1       <1        9        52      3480     28
         JUL
           19...        85      <1       <10       2       <1       <1       <1       11        87      5470     13
         AUG
           17...       160      <1       <10       3       <1       <1       <1       12        28      1810     43
         SEP
           12...       380       --      <10       --       --       --       --       --       --       --       --

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