Results
| Country: | U.S.A.
| | Station: | HELENA, ARK. | | River: | MISSISSIPPI RIVER | | Area: | 0.00 | | Lat: | 34.52 | | Lon: | -90.58 | | Source: | USGS | | PointID: | 7047970 | | Area Units: | km2 | | Discharge Units: | m3/sec | | Starting Year: | 1928 | | Ending Year: | 1977 | | Total Years: | 50 | | Total Usable Years: | 49 | |
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| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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| 1928 | 16377.3 | 18773.2 | 17421.3 | 24233.7 | 21924.7 | 24375.3 | 29056.9 | 12287.8 | 10512.2 | 7809.1 | 11945.1 | 15648.3 | 17530.4 |
| 1929 | 13376.6 | 18458.6 | 34314.7 | 40663.2 | 40283.2 | 29110.8 | 16061.2 | 8232.94 | 5691.72 | 6809.78 | 13693.2 | 12585.5 | 19940.1 |
| 1930 | 25186.6 | 22813.4 | 23335 | 14692.8 | 12667.8 | 9393.69 | 6650.84 | 3654.72 | 3934.18 | 3344.15 | 3349.9 | 4052.98 | 11089.7 |
| 1931 | 4096.83 | 5886.9 | 9073.31 | 14825.8 | 11800.9 | 8450.74 | 6044.31 | 5389.36 | 5660.57 | 5219.46 | 4873.36 | 17711.8 | 8252.78 |
| 1932 | 25217.7 | 34078 | 17449.7 | 22674.4 | 15361.5 | 8886.82 | 14190.5 | 7505.83 | 4832.77 | 5100.71 | 6641.28 | 8733.51 | 14222.7 |
| 1933 | 21544.7 | 22434.1 | 21319.1 | 31418.7 | 27400.8 | 20712 | 8221.98 | 7092.04 | 5519.93 | 4327.02 | 3403.7 | 7147.76 | 15045.2 |
| 1934 | 9624.13 | 4551.96 | 16328.9 | 16036.9 | 6955.93 | 5168.8 | 4586.44 | 4824.85 | 4311.73 | 4654.04 | 5309.44 | 8518.85 | 7572.66 |
| 1935 | 13022.2 | 15731.1 | 23031.8 | 31613.1 | 23291.2 | 26588.7 | 17665.2 | 11276.6 | 6632.78 | 3371.55 | 7213.28 | 8128.81 | 15630.5 |
| 1936 | 12591 | 10530 | 20448.5 | 33476.4 | 12360.8 | 6100.43 | 4632.11 | 2857.28 | 3300.82 | 5417.68 | 8107.16 | 5914.6 | 10478.1 |
| 1937 | 26226.1 | 50282.9 | 20246.7 | 13275 | 23771.7 | 13000.3 | 10497.4 | 6171.28 | 5244.31 | 4554.47 | 6471.38 | 6509.26 | 15520.9 |
| 1938 | 10760.5 | 16872.9 | 21636 | 27257.9 | 14574.1 | 19715.2 | 14767.8 | 12477.8 | 7288.8 | 6631.66 | 5639.8 | 5851.57 | 13622.8 |
| 1939 | 9077.88 | 26047.6 | 34948.7 | 28502.9 | 20041.1 | 10955.8 | 10478.2 | 6848.15 | 3551.9 | 2573.19 | 2913.82 | 3113.96 | 13254.4 |
| 1940 | 3450.11 | 7825.26 | 15000.7 | 17218.6 | 16901.6 | 10070.5 | 7891.31 | 5346.43 | 5085.73 | 3098.43 | 3716.13 | 6007.77 | 8467.71 |
| 1941 | 8158.04 | 8188.67 | 7162.37 | 12035.7 | 8795.62 | 10464.1 | 8845.87 | 4337.98 | 6038.13 | 10526.6 | 12731.3 | 7332.28 | 8718.06 |
| 1942 | 8769.13 | 15065.7 | 19364.3 | 23085 | 12500.6 | 15235.5 | 17017.6 | 9192.06 | 8168.51 | 7513.14 | 9107.69 | 12291.4 | 13109.2 |
| 1943 | 23534.2 | 17085.3 | 18069.9 | 24665.1 | 24148 | 28609.6 | 15862.1 | 9063.27 | 5687.94 | 4153.46 | 5244.31 | 4300.53 | 15035.3 |
| 1944 | 5960.27 | 8537.09 | 25092.5 | 30675.8 | 31169.7 | 16715.5 | 12329.8 | 6526.61 | 6767.76 | 6389.59 | 4918.66 | 6600.6 | 13473.7 |
| 1945 | 17026.7 | 11162 | 34692.9 | 35754.9 | 24497.9 | 24533.8 | 15133.2 | 8365.39 | 6263.72 | 11433.7 | 9715.56 | 11828.3 | 17534 |
| 1946 | 26779.7 | 21909.3 | 22454.5 | 16743.8 | 15638.3 | 15740.5 | 11522.3 | 8732.6 | 5767.23 | 6200.51 | 10734 | 8885.14 | 14259 |
| 1947 | 18896.6 | 16414.8 | 11714.1 | 24797.2 | 23920.6 | 25785.5 | 21014.9 | 7143.19 | 5848.4 | 4451.25 | 6196.7 | 6955.02 | 14428.2 |
| 1948 | 9803.16 | 15525.5 | 27217.2 | 33470.7 | 18656.3 | 7869.29 | 10938.6 | 9290.72 | 4729.88 | 4276.78 | 7928.76 | 15977.2 | 13807 |
| 1949 | 24444 | 32918.5 | 27687.6 | 24423.4 | 12105.1 | 13209.9 | 12391 | 7488.48 | 6629.95 | 7964.38 | 7542.71 | 12601.1 | 15783.8 |
| 1950 | 33852.5 | 44599.3 | 30155.8 | 24892.5 | 23117.6 | 18467.4 | 13971.2 | 11131.3 | 12191.4 | 8225.63 | 9808.07 | 17837.9 | 20687.6 |
| 1951 | 20168.1 | 25100 | 30283.7 | 30080.2 | 23021.7 | 15274.2 | 24193.7 | 12372.7 | 12216.9 | 8374.52 | 12785.1 | 22929.5 | 19733.4 |
| 1952 | 24564.5 | 28197.9 | 25032.2 | 31704.7 | 21540.1 | 13040.9 | 9922.82 | 7378.86 | 5364.18 | 3763.42 | 3987.98 | 6394.16 | 15074.3 |
| 1953 | 9496.24 | 14118 | 20573.7 | 18597.7 | 20063.1 | 12833.3 | 9271.53 | 6857.28 | 4529.78 | 3420.88 | 3456.56 | 4312.41 | 10627.5 |
| 1954 | 8242.99 | 9037.17 | 9587.59 | 11363.6 | 13203.9 | 9551.33 | 8056.64 | 5641.48 | 5402.88 | 7597.18 | 6508.19 | 6620.7 | 8401.14 |
| 1955 | 12431.2 | 12640.5 | 27681.2 | 25126.6 | 13177.5 | 10328.2 | 7886.74 | 5601.28 | 3980.43 | 5783.06 | 6081.55 | 6034.26 | 11396 |
| 1956 | 3743.32 | 22426.1 | 24954.6 | 19888 | 13936.5 | 10348 | 8981.06 | 8451.25 | 5524.65 | 4020.1 | 4226.78 | 8849.52 | 11279.2 |
| 1957 | 9909.12 | 25881.7 | 14227 | 21918.3 | 17400.3 | 18994.1 | 14328.4 | 7354.2 | 5489.72 | 5504.46 | 14222.7 | 20556.3 | 14648.9 |
| 1958 | 16859.6 | 13927.9 | 15064.6 | 17918.1 | 24575.5 | 12227.3 | 16855.9 | 20140.7 | 8062.79 | 6481.85 | 6031.52 | 6963.24 | 13759.1 |
| 1959 | 9678.02 | 22483.7 | 18952.3 | 17099.7 | 13838.8 | 10931.3 | 7030.84 | 6675.5 | 5218.82 | 9325.43 | 8182.67 | 14037.9 | 11954.6 |
| 1960 | 17456.1 | 16423.9 | 14670 | 26368.8 | 18089.1 | 14447.3 | 14336.6 | 6527.52 | 6359.05 | 5063.26 | 6130.63 | 5882.63 | 12646.2 |
| 1961 | 7858.42 | 8529.49 | 31093.9 | 27005 | 33912.8 | 16943.9 | 9207.59 | 9679.85 | 8286.5 | 8430.25 | 11452.3 | 16170.8 | 15714.2 |
| 1962 | 16695.2 | 23366.6 | 34437.1 | 34842.2 | 14819.8 | 12978.6 | 9671.62 | 6425.22 | 6472.32 | 6682.81 | 7191.57 | 6142.96 | 14977.2 |
| 1963 | 7852.94 | 7271.4 | 24688.8 | 19894.6 | 11049.1 | 9178.48 | 6194.12 | 5589.41 | 4379.7 | 3432.75 | 3718.02 | 4351.68 | 8966.75 |
| 1964 | 5776.67 | 8228.53 | 23288.4 | 23943 | 16328 | 8659.34 | 7195.26 | 4483.22 | 4537.33 | 5206.67 | 5010.22 | 10649 | 10275.5 |
| 1965 | 13967.6 | 17032.7 | 19138.6 | 29988.6 | 18618 | 11874.3 | 10132.9 | 5791.28 | 10199.8 | 11331.4 | 6913.12 | 6670.02 | 13471.5 |
| 1966 | 12289.6 | 15960.7 | 14332.1 | 13063.6 | 23234.6 | 10491.5 | 6355.8 | 6072.63 | 4980.96 | 5399.41 | 6859.32 | 12844 | 10990.3 |
| 1967 | 8718.9 | 10702.8 | 20066.7 | 16667.4 | 23031.8 | 14972.1 | 15270.2 | 9055.96 | 5999.43 | 6724.83 | 9351.22 | 17978.6 | 13211.7 |
| 1968 | 16232 | 17884.6 | 12737.2 | 21371.8 | 13837 | 18980.9 | 9402.16 | 9859.8 | 5114.05 | 6493.73 | 8085.45 | 10236.1 | 12519.6 |
| 1969 | 14523 | 27832.6 | 12208.3 | 23565.4 | 20163.5 | 12234.8 | 20629.4 | 10771.4 | 7103.79 | 9029.47 | 7967.46 | 8200.05 | 14519.1 |
| 1970 | 12355.3 | 16774.8 | 16240.3 | 22689.5 | 26765 | 16217.2 | 8016.45 | 7454.68 | 7536.1 | 11116.7 | 12055.5 | 11434.6 | 14054.7 |
| 1971 | 14688.3 | 17238 | 27070.1 | 13412.8 | 15507.7 | 11373 | 8906.15 | 8417.46 | 6896.13 | 6193.2 | 7319 | 13837 | 12571.6 |
| 1972 | 17339.1 | 14315.7 | 23493.1 | 23171.8 | 25344.6 | 10196 | 11547.9 | 10491.9 | 8296.88 | 10843.6 | 20543 | 27853.9 | 16953.1 |
| 1973 | 25130 | 26565.4 | 27592.6 | 42824.7 | 39689.5 | 25322.9 | 13103.5 | 10700.2 | 7018.84 | 12750.9 | 11565.6 | 23090.2 | 22112.9 |
| 1974 | 31759.8 | 34639.8 | 25733.8 | 25405.1 | 21236.8 | 27976.2 | 13949.3 | 7953.42 | 11730.8 | 6806.13 | 10432 | 13932 | 19296.3 |
| 1975 | 21960.3 | 24788.5 | 34528.5 | 37124.5 | 26890.2 | 14937.2 | 11399 | 7314.01 | 9094.48 | 11156.9 | 10467.8 | 13373.8 | 18586.3 |
| 1976 | 17575.7 | 17170.8 | 21176.6 | 16379.5 | 10883.8 | 9573.98 | 9022.16 | 5975.8 | 4684.58 | 6623.44 | 7135.88 | 6702.91 | 11075.4 |
| 1977 | 6306.47 | 6248.96 | 18891.1 | 18718.5 | 10230.7 | 5831.42 | 8315.15 | 7758.86 | 9665.54 | -9999 | -9999 | -9999 | -9999 |
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| Avg | 15027.1 | 18609.6 | 21718.2 | 23931.3 | 19445.5 | 14697.6 | 11779.1 | 7920.65 | 6476.14 | 6563.32 | 7854.83 | 10624.1 | 13801.6 |
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| Std Dev | 7420.05 |
9501.72 |
7040.27 |
7571.02 |
7260.12 |
6277.61 |
4933.86 |
2836.14 |
2143.18 |
2526.92 |
3466.86 |
5577.53 |
3369.56 |
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| | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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