Country= U.S.A. Station= HAUSER LAKE, NEAR HELENA, MT River= MISSOURI RIVER Area= 25976421.87 Lat= 46.77 Lon= -111.88 Source= USGS PointID= 6065500 Area Units= km2 Discharge Units= m3/sec Starting Year= 1934 Ending Year= 1992 Total Years= 59 Total Usable Years= 55 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1934 1380.41 1836.26 2272.67 3272.22 2496.74 2048.64 2129.99 1593.24 2003.05 2356.61 2794.79 4183.61 2364.02 1935 3480.34 3431.72 7166.94 6614.85 9368.36 14544.6 9023.99 3660.93 2427.43 1873.22 3587.67 2545.33 5643.78 1936 1730.08 2028.08 7338.67 6213.69 5263.31 3784 2075.27 1274.36 2021.17 2930.26 2821.22 1577.44 3254.8 1937 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1938 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1939 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1940 952.73 1328.56 2729.21 3984.86 3692.17 3692.63 2690.85 2836.63 2295.94 1467.28 1712.71 2056.18 2453.31 1941 2713.5 2861.03 2885.87 7025.45 4677.78 6445.89 3720.12 1918.89 4624.83 9924.65 9725.95 4341.64 5072.13 1942 3357.39 6720.23 6638.05 7742.81 8113.28 10848.2 9880.81 4197.31 4933.76 4444.76 4698.73 4251.75 6318.92 1943 6138.4 4780.52 5459.7 8728.24 14711.1 15523.4 9570.23 4910.72 3201.99 2504.41 2843.97 2316.24 6724.08 1944 2021.93 2426.77 7454.68 12264.1 15375.2 11237.1 8368.13 4240.24 4156.46 3116.42 2684.07 2854.72 6349.99 1945 2179.5 3485.32 10365.8 17061 11702.2 15229.8 7744.24 4299.62 3709.72 5172.88 3227.19 2552.82 7227.51 1946 7611.25 5283.14 8015.54 7218 6455.36 6080.6 5716.38 4775.8 3348.96 3666.5 7075.47 3600.46 5737.29 1947 3007.72 3077.15 4783.75 14488.9 10598.8 16540.9 13594.9 3263.95 2835.57 2500.94 3093.35 2814.44 6716.7 1948 2971.46 2656.33 11093.9 10071.4 6301.9 4937.54 7145.93 4535.29 2396.18 2179.77 2825.38 2114.82 4935.83 1949 5769.73 7932.81 9981.28 9483.37 4901.58 7112.29 6054.36 3142.64 3477.04 4582.88 2463.67 3243.76 5678.78 1950 8030.15 6051.75 7003.43 10152.6 11409 8784.88 6710.22 5361.96 3973.44 3238.73 2700.4 1967.12 6281.97 1951 2757.62 5364.05 8090.44 12832.3 12299.6 10476.3 19473.9 7356.94 9216.24 6021.47 7426.6 4754.88 8839.2 1952 4758.17 6425.03 9913.69 14257.6 11860.3 6326.96 5892.68 4717.06 3117.98 2107.7 2319.35 2220.33 6159.74 1953 2080.84 3345.96 5676.19 7873.07 6621.61 5612.43 5469.75 4227.45 2610.26 2013.25 1960.2 1978.99 4122.5 1954 1623.39 1661.5 2471.71 4125.79 6159.41 6140.07 5041.98 3108.84 3124.69 4843.03 3015.29 2400.92 3643.05 1955 3403.7 3556.41 6186.81 5754.96 4612.93 4824.27 3794.93 2415.07 2145.39 3079.15 2052.6 1525.01 3612.6 1956 1478.15 1954.17 2583.06 4199.13 4480.48 3465.72 3551.59 3111.58 2190.32 1702.58 1704.12 1645.95 2672.24 1957 1712.72 2311.27 3138.71 7012.23 8349.86 8261.01 7260.11 3568.22 2784.79 2589.18 2927.03 3177.53 4424.39 1958 2778.99 2202.76 6543.05 5077.24 4585.89 5261.86 9302.59 7463.81 3530.85 2620.05 2888.33 1911.03 4513.87 1959 1904.36 4839.38 6809.78 7235.94 6499.21 5274.23 3952.51 3354.93 3007.74 6083.59 3723.31 3145.65 4652.55 1960 5574.79 4353.98 3816.31 15242.1 11619.1 8306.32 6534.83 3135.15 3279.11 2601.88 3220.02 2284.18 5830.65 1961 1800.6 2378.02 7862.08 9175.65 12116 5260.35 4299.43 3928.57 6735.29 5410.37 8734.85 4158.03 5988.27 1962 4081.3 7693.12 9476.15 12256.5 7058.24 8143.97 5481.62 3606.76 3961.55 3822.79 2777.61 2059.92 5868.29 1963 1618.09 1865.48 6308.3 4861.08 5615.9 4071.04 3134.42 2736.61 2157.09 1941.63 2055.06 1525.92 3157.55 1964 1374.29 1576.09 2885.5 5633.76 5448.74 5617.15 3408.73 2074.63 2971.3 2329.85 2384.67 1858.14 3130.24 1965 3302.22 3631.66 6976.03 11947.9 10043.4 7937.25 6829.88 3207.77 8459.23 7310.35 3981.37 4210.1 6486.43 1966 4584.16 6045.58 5742.87 8220.42 8444.86 6516.69 3675.82 2987.44 2484.63 2373.97 2452.25 2884.86 4701.13 1967 2050.79 3172.72 3714.55 8944.39 6509.26 9685.36 7949.77 3544.28 2666.33 3411.83 5049.87 5760.23 5204.95 1968 3185.85 5513.03 3685.87 5557.68 5721.86 5972.06 6203.25 5266.96 3279.2 4295.96 5069.69 4306.92 4838.19 1969 5837.87 7843.81 7074.68 12533.1 10981.5 8072.23 14420.7 5381.14 4476.92 7104.83 4274.92 3039.51 7586.77 1970 2401.1 3321.18 4915.28 8556.45 11527.8 10062 3838.23 4555.75 6254.66 6956.85 6143.84 4295.05 6069.02 1971 3352.46 5307.21 8930.82 7452.09 6280.89 6406.25 4749.03 3206.22 2772.99 2997.13 4205.07 5668.88 5110.75 1972 3694.45 2854.84 5364.7 8253.46 9495.33 5540.69 4568.17 6143.88 5960.73 6017.82 9351.22 5350.09 6049.61 1973 9438.7 9484.17 15262 20700.7 18570.5 12124.4 6679.16 5044.08 4351.38 10303.7 6706.41 8126.07 10565.9 1974 8280.44 9921.07 10512 9150.17 11266.5 13460 7192.52 3935.15 3523.11 2775.89 4972.75 3741.5 7394.26 1975 4649.47 6773.83 8639.43 10181.8 11166 7782.46 6678.25 3899.52 4845.98 3567.94 3989.87 4805.67 6415.02 1976 3054.49 4036.44 8220.15 8323.31 8289.57 4382.53 3342.5 2525.05 1931.12 2105.87 2153.7 1818.04 4181.9 1977 1461.34 2051.36 4044.67 4322.87 3711.35 3339.23 3872.58 3488.84 6238.23 6349.4 7179.3 4612.02 4222.6 1978 3410.28 2430.21 9341.14 13207 10599.7 6350.56 8141.59 4933.55 5398.16 4104.14 3938.89 3292.99 6262.35 1979 2329.39 3782.04 12590.1 17823.7 12432.1 6922.56 6055.27 5539.17 5174.46 2929.9 4417.45 3885.46 6990.13 1980 3218.55 3071.22 5211.24 8725.41 4021.93 7024.5 3327.7 3735.19 5115.94 3863.9 3164.71 3129.58 4467.49 1981 2035.54 2463.48 3566.57 5193.15 8020.11 7831.54 10151.2 7623.67 4850.7 4367.21 4632.66 3718.94 5371.23 1982 3246.5 9275.84 11046.4 10712.3 9840.62 12896.5 9650.62 5894.5 5950.34 4841.29 6613.91 15055.5 8752.03 1983 7462.9 6244.91 9630.52 17412.1 16165.3 9619.29 8019.19 4314.23 3549.06 4173.56 6237.29 7728.71 8379.75 1984 4098.66 7067.53 11901.4 14666.3 13778.5 12402.8 10992.5 4578.22 3626.46 4834.9 8156.24 6139.31 8520.24 1985 7307.61 6288.4 15348.7 11691.2 7955.25 8096.77 4488.7 4438.46 4163.54 8042.03 11014.4 9319.95 8179.58 1986 4842.21 7001.38 7926.02 9711.79 10990.7 8982.15 8983.8 5576.62 6270.33 16696.1 9801.46 8154.38 8744.75 1987 4528.89 5028.29 7025.36 9561.71 5982.19 5547.3 4798.36 4207.36 4517.51 2981.51 3314.98 6677.33 5347.57 1988 5362.87 5980.75 5980.37 7554.03 3966.21 2374.57 2084.13 2028.59 2148.13 2179.4 2902.87 2490.8 3754.39 1989 2890.71 2633.28 4060.11 5860.68 3810.92 4320.23 2642.71 2492.44 5036.65 2357.16 2122.36 1599.81 3318.92 1990 2030.79 3425.45 7191.6 5619.04 11553.3 12442.5 8859.57 6454.45 4520.34 3313.18 3179.15 4489.61 6089.92 1991 5614.99 5146.62 6272.67 9946.82 10916.7 9654.21 5716.38 3575.43 3091.37 3203.29 4755.37 6027.87 6160.14 1992 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 3672.09 4422.24 7002.3 9303.43 8626.12 7810.89 6453.38 4061.73 3943.56 4192.45 4349.56 3916.29 5646.17 Std Dev 2010.13 2202.55 3052.35 3886.35 3609.66 3441.83 3277.83 1405.1 1585.58 2604.8 2319.01 2385.79 1775.62