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= 1934 Ending Year= 1990 Total Years= 57 Total Usable Years= 52 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1934 8806.59 4297.1 16198.2 14720.1 6259.88 4755.37 4238.42 4602.88 4191.86 4506.97 5249.97 8223.8 7170.93 1935 13199.4 14245.5 23613.6 28886.2 20922.6 23892.9 15278.4 10010.5 5912.59 3175.16 6879.14 7683.95 14475 1936 11923.3 10091.6 20088.6 33209.2 10106.4 5712.48 4369.95 2715.33 3270.33 5305.33 7935.37 6101.86 10069.2 1937 27960.8 47238.8 16974.7 12704.9 21970.3 11925.2 9496.24 5720.95 4711.95 4330.67 5878.61 6487.33 14616.7 1938 10026 16556.3 20349 25518.3 12998.4 17845.4 13610.4 11516.8 6833.83 5978.54 5724.75 5552.87 12709.2 1939 8812.98 27352.2 33688.1 26683.1 16775.5 10550 9800.42 6309.21 3222.38 2464.86 2883.71 3092.49 12636.2 1940 3164.29 7989.1 14715.7 17585.8 15286.6 9608.9 7444.63 5417.68 4978.13 2909.8 3778.9 6001.38 8240.08 1941 8158.95 7892.35 7029.92 12320.7 8188.18 10705.7 8554.47 4249.38 6088.15 10532.1 12410.4 7038.15 8597.37 1942 8419.28 15468.2 19870.3 22299.6 12113.3 14917.4 16642.2 9121.73 7871.18 7548.76 9577.75 12431.2 13023.4 1943 23668.4 17099.4 18928.5 24197.8 25152.8 28661.5 15547.9 9019.42 5580.34 4147.07 5108.39 4082.22 15099.5 1944 5920.08 8316.41 24478.7 30030.2 28555.4 15050.5 11258.3 6005.94 6347.73 6228.83 4877.13 6469.98 12794.9 1945 16127.9 11588.7 37100.8 34801.6 23709.6 24178.9 13689 7814.58 6154.23 10662.7 9327.62 11436.4 17216 1946 27183.4 21967.9 21728.3 16164.3 15431.8 15589.5 11064.6 8150.73 5452.91 5926.47 10813.3 8847.69 14026.7 1947 19050 15476.2 11588 25312.6 23880.4 26467 20729 7171.51 5800.27 4354.42 6199.53 6619.78 14387.4 1948 9048.65 17165 26808.9 33008.2 17245.1 8108.1 11019 8825.77 4528.83 4094.09 8230.81 16365.4 13704 1949 25093.4 31735.3 25610.4 22833.9 11388.9 12506.7 12200.1 6846.32 6354.33 7795.4 7066.04 12636.7 15172.3 1950 34387.8 42000.2 27492.2 24260.1 22139.3 18212.6 13586.7 10855.5 11965.8 7951.6 9859.04 17996.8 20059 1951 20095.9 24814.8 29846.1 29744.2 21537.4 15445 24339.8 11580.7 11921.5 8341.64 13054.1 21838.8 19380 1952 24121.5 28200.8 25482.6 29861.2 20802.9 12154.6 9341.87 7298.48 5167.85 3743.32 3932.29 6416.08 14710.3 1953 9632.35 13999.7 20150.7 17623.6 19173.3 12027.2 8907.07 6701.08 4341.94 3394.39 3223.42 4118.75 10274.5 1954 8326.11 8383.86 9414.03 11190.9 12842.2 9503.18 8027.41 5468.83 5405.72 7841.07 6173.1 6617.04 8266.12 1955 12126.1 13129 28160.8 22913.2 12347.1 9842.99 7651.07 5339.12 3815.24 5622.29 6099.48 5767.53 11067.8 1956 3604.48 22851.8 24052.1 19330.1 13460.6 10546.2 8933.56 8380.92 5436.86 3958.9 4121.07 8188.18 11072.1 1957 9835.13 26234.7 13318.1 22088.2 17065.1 17445.2 13752 6732.14 5101.78 5077.88 13764.9 19305.8 14143.4 1958 15881.3 13086.5 15101.2 17229.9 23380.7 11951.7 17168.3 19389.8 7903.27 6220.61 6090.04 6782.38 13348.8 1959 10211.5 21656.4 17776.7 16430.5 13292.5 10189.4 6739.45 6338.44 5014.94 9134.52 8086.39 14069.9 11578.4 1960 17147.3 16180.7 14428.9 26232.9 17291.6 14115.1 13700.9 6275.41 6276.94 4879.66 5963.56 5416.77 12325.8 1961 7569.77 8648.82 30537.6 25255.9 31733.3 15505.5 9002.98 9194.8 8593.27 8341.64 11858.2 15863 15175.4 1962 16277.7 22841.7 34352.2 32909.1 14055.3 13017.3 9338.22 6387.77 6440.23 6602.43 7542.71 6347.58 14676 1963 8089.53 7306.8 25488 18921.4 10966.9 8983.1 6062.58 5436.86 4279.64 3352.37 3701.98 4349.86 8911.59 1964 5873.49 8323.24 23495.8 22496.9 15831 8833.96 6767.76 4520.67 4549.6 5118.98 4894.12 10783.3 10124.1 1965 13932 16625.1 19339.6 29677.2 17843.4 12237.7 10214.2 5630.52 10340.4 11001.6 7101.9 6824.4 13397.3 1966 11611.8 15628 13616.8 13307.1 22637.2 9992.12 6285.46 6003.2 4994.17 5274.27 6895.19 13034 10773.3 1967 8705.19 10845.4 20361.8 17292.2 23172.4 14438.8 14803.4 8843.13 5838.02 6928.53 9634.39 18201.4 13255.4 1968 15724.2 17251.9 12869.6 20510.9 13283.4 18045.5 9352.83 9776.67 5044.2 6533.01 8270.45 9800.42 12205.3 1969 13957.5 26392.4 11814.6 23362.5 19678.5 11862 19830.1 9882.63 6703.58 9261.48 8311.04 8343.47 14116.7 1970 12929.9 16743.4 15897.7 21755.9 25602.2 15934 8004.58 7799.05 7790.95 11086.6 11997 11568.9 13925.8 1971 14544 17791.2 26807.1 13368.5 15565.2 11240 8744.47 8232.94 6954.66 6143.88 7469.08 13748.4 12550.8 1972 17102.6 14613.5 23123.1 21691.8 25105.3 9760.87 11796.3 10392.3 8442.24 10256.2 19933.3 26883.8 16591.8 1973 23942.5 25197.1 28444.9 41465.5 37772.1 24000.5 13555.6 9995.9 6557.27 13115.3 11190.9 21928.3 21430.5 1974 33554.7 33009.5 25769.4 25062.4 19893.2 26079 12807.5 7365.16 10336.7 6584.16 10315.9 14178.6 18746.3 1975 21804.1 25381.1 36035.7 34958.3 25838.8 14290.7 11324.1 7178.82 9298.36 11017.1 9632.5 13443.3 18350.2 1976 17065.1 16378 20368.1 15169.4 12120.6 9251.16 8854.09 5754.75 4262.65 6624.35 7081.14 7030.84 10830 1977 6153.92 5996.12 18562.2 18336.2 10310.1 5813.48 8537.12 8283.18 9803.34 12897 16260.6 22959.6 11992.7 1978 15888.6 13996.7 21065.1 26377.3 23697.7 12972 11950.7 9238.65 8451.68 6845.41 6816.85 21700.9 14916.8 1979 21734.7 16359.1 37579.4 39766.5 24567.3 15027.8 11873 14364 15585.7 13140.9 14427.5 18510.2 20244.7 1980 15892.2 10228.3 21954.8 30378.5 13315.4 13800.8 9330 9487.11 8337.47 6463.58 6258.06 7462.9 12742.4 1981 4348.03 9960.51 12286.8 12813.4 16974.7 22357.2 15459.3 12672.3 8395.05 6681.9 8007.1 9026.73 11581.9 1982 16004.6 26906.2 26539.4 23912.8 14294.6 20217.4 13617.7 10002.3 10945.5 7466.55 9858.09 29160.1 17410.4 1983 22931.3 16118.4 17068.8 31497.9 41945.7 24361.1 13045.9 7226.31 5501.05 7103.91 10603.8 23089.3 18374.5 1984 11547.9 16954.1 24697.9 34490.1 38903.9 19777.5 16496 8986.54 6848 7549.68 16635.3 17909.1 18399.7 1985 19909.6 17358.3 31291.2 23534.3 14878.3 12609.6 8309.67 8257.6 6735.67 10607 20632.7 26785.1 16742.4 1986 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1987 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1988 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1989 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1990 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 14789 17728.3 21987.8 23759.5 19102 14467.7 11393.4 8053.31 6743.85 6963.94 8608.43 12010 13800.6 Std Dev 7320.3 8682.34 7196.09 7304.28 7474.64 5612.39 4036.54 2755.57 2443.36 2718.32 3953.35 6753.31 3290.66