05059600 MAPLE RIVER NEAR HOPE, ND

List Of Figures:

Annual mean discharge
Annual flow duration

LOCATION.--Lat 47°19'30'', long 97°47'25", in NW 1/4 NW 1/4 sec.4, T.144 N., R.56 W., Steele County, Hydrologic Unit 09020205, 100 ft downstream from box culvert on State Highway 38, 500 ft east of the intersection of State Highway 32 and 38, and 3 mi west of Hope.
DRAINAGE AREA.--20.2 mi2, of which about 2.8 mi2 is probably noncontributing.
PERIOD OF RECORD.--October 1964 to current year (seasonal records only since 1983).
GAGE.--Water-stage recorder. Datum of gage is 1,296.62 ft above sea level.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 900 ft3/s, Apr. 18, 1979, gage height, 5.86 ft, backwater from ice; maximum gage height, 8.83 ft, Mar. 31, 1997, backwater from ice; no flow for many days in most years.

Annual mean discharge

Annual mean discharge 05059600 MAPLE RIVER NEAR HOPE, ND
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                              Statistics of monthly and annual mean discharges
                         [m, more than 1 year of occurrence; ng, statistic not given]
__________________________________________________________________________________________________________

                  Maximum                  Minimum                              Mean
           ______________________   ______________________   _____________________________________________

                       Water year                 Water year              Standard     Coeffi-    Percentage
 Month     Discharge       of         Discharge       of       Discharge  deviation    cient of   of annual
            (ft3/s)    occurrence      (ft3/s)    occurrence    (ft3/s)     (ft3/s)    variation   discharge
__________________________________________________________________________________________________________

October      1.07      1966            0         m               0.06        0.25        4.19       0.16
November     0.054     1966            0         m               0           0.01        3.76       0.01
December     0         m               0         m               0           0         ng           0
January      0         m               0         m               0           0         ng           0
February     0.006     1981            0         m               0           0           4.24       0
March        41.8      1987            0         m               10.6        12.4        1.17       27.9
April        63.8      1997            0.007     1991            16.2        18.6        1.15       42.6
May          11.9      1972            0         m               2.43        3.08        1.27       6.39
June         34.5      1968            0         m               2.76        6.47        2.35       7.25
July         65.3      1993            0         m               4.88        12.4        2.53       12.8
August       7.95      1993            0         m               0.57        1.82        3.20       1.49
September    15.3      1994            0         m               0.54        2.67        4.91       1.43
Annual       5.55      1969            0.002     1981            2.82        1.84        0.65       100

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Annual flow duration

Annual flow duration 05059600 MAPLE RIVER NEAR HOPE, ND 
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                              Monthly and annual flow duration, in cubic feet per second
_______________________________________________________________________________________________

 Percentage
  of days
 discharge   Jan.  Feb.  March  April  May   June  July  Aug.  Sept.  Oct.  Nov. Dec.   Annual
 equaled or
  exceeded
_______________________________________________________________________________________________

  95         0     0     0      0      0     0     0     0     0      0     0     0       0
  90         0     0     0      0      0     0     0     0     0      0     0     0       0
  85         0     0     0      0      0     0     0     0     0      0     0     0       0
  80         0     0     0      0.02   0     0     0     0     0      0     0     0       0
  75         0     0     0      0.10   0     0     0     0     0      0     0     0       0
  70         0     0     0      0.27   0.04  0     0     0     0      0     0     0       0
  65         0     0     0      0.51   0.10  0     0     0     0      0     0     0       0
  60         0     0     0      0.71   0.18  0     0     0     0      0     0     0       0
  55         0     0     0      1.40   0.32  0     0     0     0      0     0     0       0
  50         0     0     0      1.90   0.56  0     0     0     0      0     0     0        0
  45         0     0     0.04   3.25   0.75  0.03  0     0     0      0     0     0       0
  40         0     0     0.13   4.25   0.75  0.06  0     0     0      0     0     0       0
  35         0     0     0.67   5.49   1.00  0.16  0     0     0      0     0     0       0
  30         0     0     1.80   7.74   1.30  0.30  0.07  0     0      0     0     0       0
  25         0     0     4.15   11.5   1.80  0.76  0.47  0     0      0     0     0       0.02
  20         0     0     6.84   16.6   2.40  1.00  1.20  0     0      0     0     0       0.19
  15         0     0     16.5   24.7   3.20  1.90  3.37  0.06  0.02   0     0     0       0.73
  10         0     0     34.7   39.7   4.88  3.61  8.63  0.52  0.07   0     0     0       2.00
  5          0     0     60.1   82.8   9.18  9.54  22.6  2.30  0.74   0.35  0     0       8.89

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--------------------------------------------------------------------------------------------------
                            Probability of annual high discharges
                                  [ng, statistic not given]
__________________________________________________________________________________________________

                                                       Maximum average discharge
                                                               (ft3/s)1
                                       ___________________________________________________________

             Recurrence     Maximum
Exceedance    interval   instantaneous  3-day period  7-day period  15-day period  30-day period
probability    (years)      (ft3/s)
__________________________________________________________________________________________________

  0.99         1.01         ng             0.005        0.003         0.002          0.001
  0.95         1.05         ng             0.377        0.238         0.140          0.084
  0.90         1.11         29.2           2.29         1.44          0.838          0.498
  0.80         1.25         59.7           13.4         8.28          4.81           2.83
  0.50         2            192            122          73.6          42.5           24.6
  0.20         5            486            327          194           111            64.0
  0.10         10           722            401          236           135            77.5
  0.04         25           1,040          439          257           148            84.3
  0.02         50           1,270          449          263           151            86.1
  0.01         100          1,490          453          265           152            86.8
  0.005        200          1,700          455          266           152            87.1
  0.002        500          1,960          ng           ng            ng             ng

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1 Statistics computed using period of daily value record 1965-82. 
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           Annual peak discharge and corresponding gage height, period of record

_____________________________________________________________________________________

                     Gage     Peak                          Gage     Peak
Water    Date       height  discharge    Water    Date     height  discharge
year                (feet)   (ft3/s)     year              (feet)   (ft3/s)
_____________________________________________________________________________________

          Annual peak discharge, by year, and corresponding gage height

1965    April 10    4.43     575        1982    April 1     5.56     850
1966    March 14    3.18     150        1983    March 13    4.29     160
1967    April 20    3.88     248        1984    March 24    4.81     300
1968    June 10     4.78     734        1985    March 12    3.29     73.0
1969    April 9     4.50     540        1986    March 17    3.69     100
1970    April 25    4.03     349        1987    March 21    6.47     360
1971    April 2     4.52     145        1988    March 24    3.78     75.0
1972    May 27      4.65     465        1989    April 5     4.11     217
1973    March 14    2.92     59.0       1990    June 13     3.08     4.10
1974    April 10    3.80     232        1991    May 24      3.33     19.0
1975    April 18    3.48     122        1992    March 4     4.11     100
1976    March 24    3.38     104        1993    July 24     7.53     585
1977    July 5      1.70     0.910      1994    July 8      5.30     234
1978    March 26    4.19     175        1995    March 13    4.94     215
1979    April 18    5.86     900        1996    April 9     6.37     300
1980    March 29    3.18     33.0       1997    March 31    6.36     623
1981    June 21     1.88     0.980

Annual peak discharge, from highest to lowest, and corresponding gage height

1979    April 18    5.86     900        1978    March 26    4.19     175
1982    April 1     5.56     850        1983    March 13    4.29     160
1968    June 10     4.78     734        1966    March 14    3.18     150
1997    March 31    6.36     623        1971    April 2     4.52     145
1993    July 24     7.53     585        1975    April 18    3.48     122
1965    April 10    4.43     575        1976    March 24    3.38     104
1969    April 9     4.50     540        1986    March 17    3.69     100
1972    May 27      4.65     465        1992    March 4     4.11     100
1987    March 21    6.47     360        1988    March 24    3.78     75.0
1970    April 25    4.03     349        1985    March 12    3.29     73.0
1984    March 24    4.81     300        1973    March 14    2.92     59.0
1996    April 9     6.37     300        1980    March 29    3.18     33.0
1967    April 20    3.88     248        1991    May 24      3.33     19.0
1994    July 8      5.30     234        1990    June 13     3.08     4.10
1974    April 10    3.80     232        1981    June 21     1.88     0.980
1989    April 5     4.11     217        1977    July 5      1.70     0.910
1995    March 13    4.94     215

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---------------------------------------------------------------------------------------------------------------------------------
                             Monthly and annual mean discharges, in cubic feet per second
           [Data were not rounded in accordance with U.S. Geological Survey publication standards; --, no data]
__________________________________________________________________________________________________________________________________

Year     Oct.     Nov.     Dec.  Jan.  Feb.     March    April    May      June     July     Aug.     Sept.    Annual
__________________________________________________________________________________________________________________________________

 1965    0        0        0     0     0        2.46     41.9     0.601    1.11     9.13     0.063    0.714     4.64
 1966    1.07     0.054    0     0     0        33.5     6.29     3.05     1.72     10.6     1.84     0.001     4.91
 1967    0        0        0     0     0        16.2     17.7     7.20     1.75     0.002    0        0         3.58
 1968    0        0        0     0     0        6.45     0.067    0.279    34.5     6.16     0.124    0.027     3.94
 1969    0        0        0     0     0        0        56.5     3.08     6.37     1.45     0        0         5.55

 1970    0        0        0     0     0        0.359    43.1     8.49     4.75     0.099    0        0         4.69
 1971    0        0        0     0     0        3.28     11.2     0.969    15.2     2.75     0        0         2.76
 1972    0        0        0     0     0        11.7     13.8     11.9     1.10     0.009    0.002    0.001     3.22
 1973    0        0        0     0     0        4.86     0.021    0        0        0        0.013    0.001     0.415
 1974    0.003    0        0     0     0        0        24.1     3.95     0.795    0        0        0         2.38

 1975    0        0        0     0     0        0.019    17.2     3.81     2.73     1.70     0        0         2.11
 1976    0        0        0     0     0        7.86     1.31     0.047    0        0        0        0         0.777
 1977    0        0        0     0     0        0.034    0.013    0.007    0.003    0.013    0        0.006     0.006
 1978    0.010    0.007    0     0     0        20.8     14.8     1.26     0.020    0        0        0         3.10
 1979    0        0        0     0     0        0        55.2     2.81     0.105    0        0        0         4.78

 1980    0        0        0     0     0        2.59     2.11     0        0        0        0.008    0         0.393
 1981    0        0        0     0     0.006    0.005    0.008    0        0.001    0        0        0         0.002
 1982    0        0        0     0     0        10.3     26.9     0.144    0.004    5.24     0        0         3.54
 1983  --       --       --    --    --         20.2     9.55     1.13     7.15     0.754    0        0       --
 1984  --       --       --    --    --         25.7     8.00     0.826    0        0        0        0       --

 1985  --       --       --    --    --         9.38     0.044    0        0        0        0        0       --
 1986  --       --       --    --    --         8.46     3.97     3.01     0.004    1.95     0.253    0.001   --
 1987  --       --       --    --    --         41.8     22.6     3.95     0.225    14.5     0.099    0.020   --
 1988  --       --       --    --    --         6.85     0.562    0.070    0        0        0        0       --
 1989  --       --       --    --    --         0.887    29.3     0.573    0.133    0        0.001    0.023   --

 1990  --       --       --    --    --         0.022    0.023    0        1.22     0.035    0        0       --
 1991  --       --       --    --    --         0.015    0.007    3.54     0.383    0.020    0        0       --
 1992  --       --       --    --    --         11.1     0.304    0.062    0.010    3.03     0.019    0.011   --
 1993  --       --       --    --    --         16.8     4.08     1.87     2.46     65.3     7.95     1.61    --
 1994  --       --       --    --    --         11.9     2.85     1.23     3.73     29.1     6.93     15.3    --

 1995  --       --       --    --    --         38.3     21.3     3.81     0.618    8.19     1.14     0.198   --
 1996  --       --       --    --    --         1.43     36.0     10.5     0.861    0.003    0        0       --
 1997  --       --       --    --    --         37.0     63.8     2.14     4.12     1.10     0.255    0       --

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