Country= U.S.A. Station= AKRON IA River= BIG SIOUX R Area= 21816.87 Lat= 42.84 Lon= -96.56 Source= USGS PointID= 6485500 Area Units= km2 Discharge Units= m3/sec Starting Year= 1879 Ending Year= 1993 Total Years= 115 Total Usable Years= 114 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1879 1865.72 2470.46 5130.86 10195.1 11184.3 17337.6 14194.1 7792.66 4357.99 3120.35 2417.52 2417.45 6873.68 1880 2787.21 2184.71 2128.89 4277.66 11451 19753 22462.7 10922.1 5611.49 3695.83 2941.76 2286.09 7541.87 1881 3023.98 5988.84 6252.58 10940.8 12052.1 15464.9 12211.9 6897.47 3993.64 3115.05 3163.76 2447.69 7129.39 1882 2219.14 1889.15 2707.2 6494.03 9509.94 21806 13520.9 7441.89 4240.94 3118.52 2673.97 3437.04 6588.23 1883 2467.69 2478.24 5043.17 5583.17 11438.2 15107.1 11235.5 5710.9 3556.61 2571.92 2104.99 2080.02 5781.46 1884 2036.17 2037.07 2964.24 5743.63 11439.2 18355.1 11422.7 7230.88 4696.85 3774.38 3811.47 2283.45 6316.26 1885 2643.89 4639.03 5343.69 7327.5 10541.2 12602 9626.87 5741.04 4394.8 3464.54 2914.57 2903.22 6011.86 1886 2617.68 5042.45 3443.71 5924.86 9695.38 16340.8 9935.61 5688.98 3549.06 2433.07 1974.64 2133.64 5731.66 1887 2807.4 2131.36 4972.74 7332.21 11959.8 22914.1 16568.2 8170.83 4830.88 3227.77 2839.35 2809.23 7546.99 1888 1972.78 4089.37 3406.26 5363.24 10241.6 14591.8 9580.28 6018.73 4341.94 2893.72 2639.33 2420.56 5629.97 1889 1881.62 1783.36 2512.27 4314.57 7195.26 7581.41 5171.05 4229.28 2729.76 2477.83 2192.21 1828.18 3658.07 1890 1455.77 3325.12 3387.35 5437.81 15817.3 12374.5 9226.77 5502.63 3430.13 2522.5 2197.78 1971.69 5554.11 1891 1865.18 1773.76 2087.15 3875.37 9674.37 11879.9 8652.21 5798.59 3729.35 2500.48 3045.96 2825.76 4809.01 1892 2236.4 2066.07 3590.87 4332.5 8432.99 15394.1 12653.1 5946.57 4104.08 3134.05 2779.79 2434.35 5592.07 1893 2201.42 2320.48 2011.33 4824.27 12486 16915.6 13153.7 7741.5 4233.39 3461.07 4011.58 4713.41 6506.15 1894 4105.05 3240.27 4612.93 9143.56 16423.9 28379.3 15663 7666.6 4955.47 3757.03 3854.89 3237.91 8753.33 1895 2900.85 2662.61 3370.64 5142.37 10656.3 10782.2 9845.18 5823.25 3649.12 2732.68 2226.47 2131.08 5160.23 1896 2557.21 2621.08 3808.18 5107.44 7584.39 19230.1 18081.8 7256.46 4455.21 2529.53 3440.8 4612.93 6773.76 1897 3247.87 3470.45 3073.95 8562.12 17680.8 15299.7 10546.7 5945.66 3890.76 2748.67 3220.78 3987.22 6806.22 1898 3211.6 4158.25 4174.47 5692.66 11884 17075.2 11307.6 6709.3 4050.27 2757.62 2368.43 1939.26 6277.39 1899 2789.41 2774.36 2998.86 5425.54 8756.35 18075.7 17392.1 8679.62 5477.45 3969.86 3670.83 4432.98 7036.92 1900 4748.12 3551.34 5361.96 7783.4 12883.3 11633.6 8967.35 5206.67 3815.96 3232.7 3531.13 3909.57 6218.76 1901 3664.77 3461.65 5294.36 4678.91 12146.2 14600.2 9636 6196.86 3752 2428.96 2375.51 2618.87 5904.52 1902 2499.48 2864.37 3124 4050.18 10129.3 15197.7 11532.3 6535.75 3555.67 2368.49 2402.13 2402.56 5555.16 1903 3302.58 2484.51 2758.08 5405.72 8739.9 19342.4 12052.1 6107.34 4216.4 4377.26 3776.54 3450.11 6334.41 1904 2819.28 2845.96 4753.6 9535.28 14393.3 15828.3 11248.2 5674.36 3466 2398.36 2056.76 2032.06 6420.95 1905 1882.9 1781.44 3009.64 3706.7 5822.34 10111.1 6965.98 4947.25 2704.09 2927.61 2237.99 1908.11 4000.43 1906 1798.95 2171.31 2611.1 5736.08 8465.87 9389.92 7861.17 4744.47 3273.45 2596.4 3850.17 3476.6 4664.62 1907 2969.17 4461.95 4722.54 6629.01 10728.5 15059 12191.8 6519.31 4593.02 3273.81 2494.26 2500.67 6345.25 1908 2128.98 1874 3271.16 5169.74 9751.1 15205.3 11702.2 5773.93 3424.47 2560.77 2491.42 2216.76 5464.15 1909 2246.63 2904.52 3068.28 4247.55 6550.36 16765.6 11937 5746.52 3654.78 2846.32 3619.01 4003.66 5632.52 1910 3052.3 2615.28 7698.57 9111.47 13953 11238.1 6731.22 4544.42 2640.37 2888.97 3432.02 3203.47 5925.77 1911 2236.49 2244.12 2957.39 4357.04 8661.35 14244.4 10695.6 5293.45 3398.04 2403.93 2211.65 1976.34 5056.65 1912 2289.2 3120.73 2319.25 5128.21 10544 14793.8 8641.25 5089.75 3639.68 2527.16 2643.01 2245.72 5248.48 1913 2121.31 2162.1 2776.89 6460.05 10648.1 19663.3 11103 5941.09 3993.64 3122.18 2858.13 2339.9 6099.14 1914 2699.89 2544.08 4233.85 6160.83 10619.8 11965.8 8947.26 4746.29 3087.5 2950.45 3415.03 2535.74 5325.54 1915 1990.59 2013.44 2382.56 4735.55 7161.46 7527.6 6329.31 5251.43 3458.45 2185.34 2386.08 2423.2 3987.08 1916 2003.29 3764.11 5620.47 7602.17 11055.5 15054.3 16966.4 7326.79 4403.29 2861.48 2395.81 2100.85 6762.87 1917 1882.17 1933.85 1979.82 5026.27 11072 18592 13548.3 5770.27 3493.37 2859.74 2186.17 3661.84 6000.48 1918 6108.25 3727.73 3582.56 5878.61 11347.8 11821.4 9607.68 5150.95 3415.03 2916.65 2407.98 2135.1 5674.98 1919 2321.63 2605.87 2988.36 6057.01 9522.73 11410.8 8058.47 4823.94 3091.93 2038.64 1871.28 1841.97 4719.39 1920 2229.1 2173.77 2204.62 3331.12 7143.19 10244.2 10636.2 6057.1 3397.1 3766.16 3135.54 2789.5 4758.97 1921 3544.56 3665.84 5469.75 6200.48 12740.8 18705.3 9826 5148.21 3079.66 2444.12 2822.83 3514.96 6430.21 1922 2225.53 2103.55 2468.69 4655.31 9319.03 16407.8 8263.08 4559.95 3377.27 2448.05 2182.86 1983.47 4999.55 1923 3063.62 2023.15 2380 4974.35 9084.28 14368 9973.98 4922.59 3422.58 2420.55 2078 2129.26 5070.03 1924 1909.3 3381.44 2661.52 2907.31 8533.46 8261.96 5534.6 3748.81 2906.83 2094.64 2426.86 2229.28 3883 1925 2696.42 4515.55 3579.82 7656.92 13228.6 13370.3 8907.07 4717.06 3011.23 2381.83 2030.23 2082.4 5681.45 1926 1894.68 2576.95 2755.33 3966.27 6947.71 5114.99 4638.51 3061.89 2619.42 2408.86 2895.51 3475.59 3529.64 1927 2768.22 3433.64 3398.04 4156.94 9305.33 16927 11367 5467.92 4342.88 4407.4 5685.11 5215.81 6372.94 1928 4240.24 3431.73 4652.3 5775.72 14023.3 14280.3 8901.59 4895.19 2937.61 2468.79 2256.3 1858.69 5810.15 1929 1664.13 1644.41 2452.25 2966.49 6078.11 10876.6 6221.52 3870.29 2674.16 1966.02 1775.19 1781.23 3664.2 1930 1380.04 2355.27 2140.49 4169.21 7016.22 8399.77 6529.35 4221.97 2855.68 2165.43 1825.03 1680.66 3728.26 1931 1553.78 1611.84 2157.39 3760.5 6959.59 7719.21 5488.93 3587.12 2816.5 2001.28 1868.07 1680.48 3433.72 1932 1835.22 1684.57 4495.1 6701.69 12512.5 13589.3 8722.55 4668.65 3189.91 2230.19 2638.95 2689.84 5413.21 1933 2562.51 1988.56 2680.61 4316.45 8801.11 17545.2 11966.2 5992.24 3703.86 2923.05 4146.55 5416.77 6003.59 1934 6086.33 4423.52 4421.11 8379 11976.3 10757.6 6141.14 4198.22 2913.06 2109.07 2773.93 2638.32 5568.13 1935 2429.69 2996.85 2765.02 4067.55 8185.44 12458.5 8842.21 5323.6 3177.92 2182.78 1836.83 1609.32 4656.31 1936 1799.59 1582.73 2579.77 5700.12 12216.5 11741.2 6028.78 3894.96 2771.29 1985.75 1637.48 1483.35 4451.79 1937 1201.37 1456.1 1976.98 3329.61 6909.35 9878.86 6970.55 4029.23 2765.82 2061.93 2628.1 2804.39 3834.36 1938 2727.2 2466.01 3820.05 6474.21 11194.3 14544.6 8840.38 3990.87 2943.27 2609.82 2137.27 1953.6 5308.46 1939 1930.49 1883.48 3039.05 5209.38 9829.65 8656.5 6608.82 4052.07 2798.1 2177.67 2437.24 2308.48 4244.24 1940 2076.55 2517.58 3778.04 5932.41 7714.1 8987.82 5849.74 3608.13 3064.84 2627.09 2692.76 2310.39 4263.29 1941 2287.19 2343.64 2995.03 4198.47 6754.97 6949.94 4008.23 3482.99 3486.77 3437.32 3499.98 4657.69 4008.52 1942 3162.55 3196.79 2932.73 5602.99 7590.78 10991.7 7989.05 4562.69 2969.79 2349.58 2483.78 2893.54 4727.16 1943 3099.07 3316.33 3525.01 9484.31 10058.9 13813 11213.5 5259.65 2865.3 2498.2 2510.3 2179.95 5818.63 1944 2204.62 2152.58 2264.72 2784.98 4932.64 8211.93 4798.36 3494.59 2612.62 2474.63 2315.1 2068.33 3359.59 1945 2315.51 2566.94 2538.48 3277.5 8234.76 12064.9 7008 3642.39 2680.3 2156.66 2457.07 2543.32 4290.49 1946 3087.47 2483.81 3938.8 6716.79 12934.5 14027.3 8402.84 4459.47 3267.31 2642.89 2607.9 4102.13 5722.6 1947 2892.26 3513.33 3882.17 5448.19 12887 12882.3 7638.28 4281.35 2903.53 3567.85 3729.35 3187.49 5567.76 1948 3453.03 3270.42 3089.75 4981.9 13482.5 23663.6 9030.38 5113.5 3521.69 2826.04 2552.21 2500.76 6457.15 1949 2341.09 3183.13 4282.26 6335.46 13812.3 11570.3 5424.99 3600.83 2686.25 2449.15 2475.85 2824.12 5082.14 1950 2769.68 3624.27 4559.04 6082.49 9458.79 16789.2 13795 5436.86 3410.97 3089.66 3803.92 4030.15 6404.17 1951 4380.91 5529.91 4708.84 7167.03 13262.4 12980.5 9763.88 5079.7 3105.43 3448.74 3161.88 3270.61 6321.65 1952 3376.12 3715.39 4202.79 7215.17 13143.7 11502.4 7506.75 4023.75 2718.34 2435.17 2402.7 2287.19 5377.46 1953 3178.17 3958.31 3895.87 4410.84 7134.06 14438.8 9063.27 4401.92 3363.12 2855.81 2896.17 2942.23 5211.55 1954 3182.47 3530.52 3733.28 4504.29 10663.6 14236.8 11933.3 6098.2 4302.3 3104.09 3193.21 2922.86 5950.41 1955 2892.99 3070.37 3359.68 4035.17 5679.84 12687.9 11422.7 5132.69 3213.04 2925.6 3533.96 4330.67 5190.38 1956 4358.08 3659.73 4752.69 9626.84 15008 18098.3 8665.92 4493.27 3267.78 3096.6 3096.94 3198.91 6776.92 1957 3187.31 3406.33 4232.02 5348.14 14660.9 13576.1 5756.57 3564.29 2725.04 2818.91 2699.55 2736.7 5392.66 1958 2830.79 4217.21 4307.84 5953.18 11199.8 12839.9 5698.11 3416.31 2733.53 2811.24 3112.98 3646.5 5230.62 1959 4153.46 4097.87 4513.36 5927.69 9883.55 14484.1 10177.7 4707.93 4324.01 4950.91 4607.18 4050.24 6323.17 1960 3324.05 3546.46 3751.73 7402.06 8475 10935.1 8140.68 4286.1 2902.02 2734.51 2987.35 2685.91 5097.58 1961 2855.91 4682.42 4619.33 4927.16 9495.33 16738.2 6502.86 3487.28 2642.26 2625.9 2602.8 2526.7 5308.85 1962 3090.94 3633.98 3178.9 6114.58 8641.25 11194.7 6743.1 4424.76 2759.21 3074.31 3277.41 3896.78 5002.49 1963 3589.86 4633.87 3674.82 4742.15 7349.63 11121 7083.82 3934.24 2842.18 2597.13 2568.92 2692.95 4735.88 1964 2638.14 3053.94 2980.87 3935.12 8184.53 16333.2 10041.6 4597.4 2986.22 3426.36 3049.93 4697.7 5493.75 1965 4892.45 6642.36 5224.03 6937.67 11406.3 13765.8 8279.53 4751.77 3275.14 3040.33 3043.32 3236.45 6207.93 1966 3324.05 3453.66 3675.46 4242.83 7416.31 9539.05 7365.16 3848.46 2802.16 2733.41 2813.2 3293.36 4542.26 1967 3580.09 3713.57 3857.51 4139.94 7189.78 16371 9839.7 4385.48 3072.21 3059.06 3222.57 3751.18 5515.17 1968 3532.32 4216.3 4697.88 3465.53 5544.65 10124.3 7271.08 3951.59 3488.37 3329.53 3658.93 4030.42 4775.91 1969 4984.71 4917.05 5294.37 9750.49 11340.5 9601.35 6698.34 3471.3 2858.13 3255.82 3479.59 3600.55 5771.02 1970 4488.98 4140.25 4186.35 4273.04 7577.08 9700.46 5153.69 3630.97 3081.83 3216.81 3363.4 3628.96 4703.48 1971 4476.83 5508.67 6119.21 7192.52 13790.4 13898 8066.69 4568.9 3061.54 3288.06 3617.21 4137.57 6477.13 1972 4431.43 5321.64 9359.22 8241.19 11392.6 16123.7 8346.21 5119.71 3605.51 3426.81 3586.91 4338.07 6941.08 1973 4261.25 3902.28 4224.71 3962.02 4204.62 4068.21 3755.29 3627.13 2876.54 3153.97 3364.44 4762.74 3846.93 1974 7153.24 6707.08 6430.7 8768.83 9975.81 13628 8361.74 4747.21 3814.21 3685.32 3730.48 3858.97 6738.47 1975 4525.51 5074.81 6153.01 5954.12 8747.21 9300.25 5685.32 3710.62 3131.2 3340.13 4208.85 5643.3 5456.19 1976 5712.73 6127.21 6292.77 7557.81 10125.6 8272.34 6680.98 6316.52 4552.43 4004.48 3773.71 3755.93 6097.71 1977 4121.68 3513.03 3480.8 2943.36 3854.67 3501.96 2508.98 2653.76 2803.67 2690.85 3310.92 4424.3 3317.33 1978 4697.88 4747.14 5023.98 6586.53 7335.93 6708.3 5049.1 3506.19 3896.14 3662.3 4004.4 4049.79 4938.97 1979 4563.97 4550.85 4682.35 5076.29 6937.67 4943.2 3480.98 3106.37 2762.32 3068.56 3810.52 3882.17 4238.77 1980 4523.41 4080.58 4050.24 4414.62 7323.14 8025.04 4535.29 3332.55 3007.93 2996.21 3642.89 4938.12 4572.5 1981 5933.78 5686.66 4509.71 4526.94 6765.02 10373.5 6522.96 4596.49 3245.79 3526.56 3523.86 4589.18 5316.7 1982 5132.68 6860.8 9090.67 8084.5 9985.85 10787.8 8080.39 4576.58 3582.01 3622.2 4235.28 4444.86 6540.3 1983 5452.39 6721.24 9770.28 7780.57 9108.03 8345.96 5973.97 4723.46 3467.61 3323.41 4217.35 5323.6 6183.99 1984 5664.31 6105.73 6469.98 8176.06 9239.56 10229 5849.75 3977.17 3376.71 3663.67 3992.7 4559.95 5942.05 1985 5818.69 5835.32 5010.28 6006.04 6877.38 5462.35 3223.66 2728.75 3015.19 3617.54 4521.19 4797.45 4742.82 1986 3747.89 5793.86 8209.19 7611.61 7698.57 7478.52 4319.44 3584.2 3286.57 3530.31 4085.2 4327.02 5306.03 1987 4751.78 4084.73 3918.71 4268.32 6675.51 4308.9 3198.18 3052.3 3076.26 3510.76 3206.62 4204.62 4021.39 1988 4379.09 3893.49 3611.88 3839.12 5584.84 4791.24 3035.13 2896.01 3186.61 3166.48 3784.38 4583.7 3896 1989 4684.18 4330.28 4655.86 5791.77 7526.84 5574.67 3116.61 2699.25 3080.89 3294.82 3834.03 4058.47 4387.31 1990 4539.85 5119.31 5481.62 5791.77 6476.37 8959.5 5158.26 4048.14 3157.35 3214.62 4636.44 5856.14 5203.28 1991 5889.94 5772.62 6290.94 6702.63 8403.75 8290.27 5935.61 4650.38 3491.77 3527.2 3902.08 3994.89 5571.01 1992 4277.69 3813.03 4433.53 4240.75 5958.45 5311.33 3480.98 3042.16 2738.25 2705.46 3208.88 4032.98 3936.96 1993 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 3225.2 3484.36 4048.57 5751.58 9714.13 12711.9 8686.09 4935.15 3414.11 2936 3021.49 3183.6 5426.01 Std Dev 1240.11 1321.06 1526.8 1759.1 2719.3 4456.97 3489.12 1389.37 632.45 563.24 748.45 1046.92 1026.56