05062200 ELM RIVER NEAR KELSO, ND

List Of Figures:

Annual mean discharge
Annual flow duration

LOCATION.--Lat 47°17'30'', long 97°06'50", in sec.23, T.144 N., R.51 W., Traill County, Hydrologic Unit 09020107, on left bank 50 ft upstream from county road, 4.0 mi south and 3.4 mi west of Kelso.
DRAINAGE AREA.--199 mi2.
PERIOD OF RECORD.--December 1955 to September 1963, 1964-73 (annual maximum only), October 1980 to August 1986 (seasonal records only since 1982).
GAGE.--Water-stage recorder. Elevation of gage is 893 ft above National Geodetic Vertical Datum of 1929, from topographic map. Prior to September 1973, gage located at site 1 mile upstream at datum of 887.60 ft above National Geodetic Vertical Datum of 1929, Emerson-Crookston supplementary adjustment of 1941.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 1,000 ft3/s, occurred during Mar. 1966; maximum gage height, 13.75 ft, Mar. 6, 1983, from floodmark, backwater from ice; no flow at times each year.
EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum stage known since 1925, about 14 ft in 1950, from information by local resident.

Annual mean discharge

Annual mean discharge for 05062200 Elm River near Kelso, North Dakota 
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                              Statistics of monthly and annual mean discharges
                                    [m, more than 1 year of occurrence]
__________________________________________________________________________________________________________

                  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      1.11      1963          0         m             0.150       0.37        2.40       0.15
November     0.590     1963          0         m             0.070       0.20        3.00       0.06
December     0.500     1963          0         m             0.060       0.17        3.00       0.05
January      0.026     1963          0         m             0           0.01        3.00       0
February     0.009     1981          0         m             0           0           3.00       0
March        147       1984          0         m             30.6        52.2        1.71       29.8
April        240       1982          0         1958          45.0        66.4        1.48       43.8
May          24.5      1986          0         m             5.26        7.42        1.41       5.12
June         111       1983          0         m             15.9        37.0        2.32       15.5
July         37.6      1962          0         m             4.61        10.9        2.37       4.49
August       4.00      1983          0         m             0.42        1.10        2.60       0.41
September    5.19      1962          0         m             0.58        1.73        3.00       0.56
Annual       13.0      1962          0         1958          2.22        4.27        1.93       100
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Annual flow duration

Annual flow duration for 05062200 Elm River near Kelso, North Dakota 
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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       0.05    0       0       0       0
  90           0     0     0       0       0       0       0       0       0.05    0       0       0       0
  85           0     0     0       0       0       0       0       0       0.05    0       0       0       0
  80           0     0     0       0       0       0       0       0       0.05    0       0       0       0
  75           0     0     0       0.04    0       0       0       0       0.05    0       0       0       0
  70           0     0     0       0.09    0       0       0       0       0.05    0       0       0       0
  65           0     0     0       0.25    0       0       0       0       0.05    0       0       0       0
  60           0     0     0       0.89    0.10    0       0       0       0.05    0       0       0       0
  55           0     0     0       4.51    0.37    0       0       0       0.05    0       0       0       0
  50           0     0     0       8.10    0.58    0       0       0       0.05    0       0       0       0
  45           0     0     0       10.9    1.10    0.10    0       0       0.05    0       0       0       0
  40           0     0     0.04    15.6    1.70    0.61    0       0       0.05    0       0       0       0
  35           0     0     0.30    20.2    2.70    1.30    0       0       0.05    0       0       0       0
  30           0     0     1.10    30.0    4.47    2.20    0       0       0.05    0       0       0       0
  25           0     0     1.60    42.0    5.88    2.80    0.24    0       0.05    0       0       0       0
  20           0     0     4.74    65.0    7.56    4.41    1.00    0       0.05    0       0       0       0
  15           0     0     33.7    99.6    11.2    5.59    4.28    0.20    0.05    0       0       0       0.15
  10           0     0     109     166     14.9    22.0    7.90    1.90    0.05    0.49    0       0       1.10
  5            0     0     225     291     22.4    80.0    27.7    2.80    3.60    1.30    0.47    0.10    4.64
______________________________________________________________________________________________________________________

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

                                                       Maximum average discharge
                                                               (ft3/s)
                                       ___________________________________________________________

             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             0             0              0
  0.95         1.05       ng            0             0             0              0
  0.90         1.11         9.00        0             0             0              0
  0.80         1.25         26.5        0.202         0.158         0.115          0.072
  0.50         2            158         7.67          5.79          4.22           2.55
  0.20         5            660         83.3          64.2          47.2           27.4
  0.10         10           1,220       229           182           134            76.1
  0.04         25           2,160       570           468           348            193
  0.02         50           2,980       970           819           611            334
  0.01         100          3,860       1,520         1,320         988            532
  0.005        200          4,780       2,180         1,950         1,470          779
  0.002        500          6,020       ng            ng            ng             ng
__________________________________________________________________________________________________

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                          Probability of annual low discharges
                               [ng, statistic not given]
____________________________________________________________________________________

                                    Minimum average discharge (ft3/s)
                    ________________________________________________________________

                                       Number of consecutive days
                    ________________________________________________________________

Non-       Recur-
exceed-    rence
ance       inter-   1      3      7      14     30     60     90     120    183
prob-       val
ability   (years)
____________________________________________________________________________________

0.05       20       ng     ng     ng     ng     ng     ng     ng     ng     ng
0.10       10       ng     ng     ng     ng     ng     ng     ng     ng     ng
0.20       5        ng     ng     ng     ng     ng     ng     ng     ng     ng
0.50       2        ng     ng     ng     ng     ng     ng     ng     ng     ng
____________________________________________________________________________________

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                        Probability of seasonal low discharges
                               [ng, statistic not given]
_____________________________________________________________________________________

                                        Minimum average discharge (ft3/s)
                            _________________________________________________________

                                           Number of consecutive days
                            _________________________________________________________

   Non-       Recurrence
exceedance     interval      1     7      14     30        1      7      14     30
probability    (years)
_____________________________________________________________________________________

                            December-January-February          March-April-May
                            _________________________      __________________________

0.05           20           ng     ng     ng     ng        ng     ng     0      0
0.10           10           ng     ng     ng     ng        ng     ng     0      0
0.20           5            ng     ng     ng     ng        ng     ng     0      0
0.50           2            ng     ng     ng     ng        ng     ng     0      0.083

                               June-July-August            September-October-November
                            _________________________      __________________________

0.05           20           ng     ng     0      0         ng     ng     ng     ng
0.10           10           ng     ng     0      0         ng     ng     ng     ng
0.20           5            ng     ng     0      0         ng     ng     ng     ng
0.50           2            ng     ng     0      0         ng     ng     ng     ng
_____________________________________________________________________________________

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           Annual peak discharge and corresponding gage height, period of record
                                 [--, no data]
_____________________________________________________________________________________

                     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

1956     June 4      6.80     102        1968    --             6.73     117
1957     March 24    4.75     3.00       1969    --             12.16    930
1958     --        --         0          1970    --             9.58     452
1959     March 20    4.55     3.20       1971    March1         7.28     140
1960     April 1     7.76     165        1972    April 14       10.60    635
1961     March 18    4.81     9.90       1973    March1         8.58     265
1962     April 8     9.51     440        1981    February 27  --         0.050
1963     April 7     5.80     53.0       1982    April 2        12.93    500
1964     --          5.14     20.0       1983    March 17       10.10    310
1965     April1      11.73    850        1984    March 26       13.75    747
1966     March1      12.48    1,000      1985    March 17       8.95     255
1967     April1      8.72     300        1986    March 23       10.22    362

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

1966     March1      12.48    1,000      1985    March 17       8.95     255
1969     --          12.16    930        1960    April 1        7.76     165
1965     April1      11.73    850        1971    March1         7.28     140
1984     March 26    13.72    747        1968    --             6.73     117
1972     April 14    10.60    635        1956    June 4         6.80     102
1982     April 2     12.93    500        1963    April 7        5.80     53.0
1970     --          9.58     452        1964    --             5.14     20.0
1962     April 8     9.51     440        1961    March 18       4.81     9.90
1986     March 23    10.22    362        1959    March 20       4.55     3.20
1983     March 17    10.10    310        1957    March 24       4.75     3.00
1967     April1      8.72     300        1981    February 27  --         0.050
1973     March1      8.58     265        1958    --           --         0
_____________________________________________________________________________________
1Day of month unknown. 
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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
__________________________________________________________________________________________________________________________________

 1956    0        0        0        0        0     0         10.2     2.08     2.07     0        0        0       1.18
 1957    0        0        0        0        0     0.274     0.117    0        0        0        0        0       0.033
 1958    0        0        0        0        0     0         0        0        0        0        0        0       0
 1959    0        0        0        0        0     0.713     0.190    0        0        0        0        0       0.076
 1960    0        0        0        0        0     5.16      46.8     0.155    0.010    0        0        0       4.29

 1961    0        0        0        0        0     1.87      0.213    0.052    0        0        0        0       0.181
 1962    0.277    0        0        0        0     0         91.5     11.4     8.94     37.6     1.43     5.19    13.0
 1963    1.11     0.590    0.500    0.026    0     1.72      8.83     0.919    0.487    0        0        0       1.18
 1981    0        0        0        0        0     0.007     0.012    0        0        0        0        0       0.002
 1982    --       --       --       --       --    4.72      240.1    14.5     2.35     2.83     0        --      --

 1983    --       --       --       --       --    131.0     68.3     9.03     111.4    20.5     4.00     --      --
 1984    --       --       --       --       --    146.7     54.6     8.29     94.1     0.535    0        --      --
 1985    --       --       --       --       --    50.3      11.7     2.69     1.05     0        0.323    --      --
 1986    --       --       --       --       --    85.2      97.6     24.5     2.79     3.05     0.158    --      --
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