Country= U.S.A. Station= MARIAVILLE, NE River= NIOBRARA RIVER Area= 25484.09 Lat= 42.78 Lon= -99.33 Source= USGS PointID= 6463720 Area Units= km2 Discharge Units= m3/sec Starting Year= 1902 Ending Year= 1994 Total Years= 93 Total Usable Years= 92 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1902 6.46 5.61 12.23 13.28 20.74 25.6 19.15 13.1 9.28 7.79 8.43 4.25 12.16 1903 4.25 2.83 4.25 35.69 16.02 13.02 10.28 7.59 8.98 13.34 12.4 8.3 11.41 1904 7.36 6.88 10.59 73.34 29.54 35.92 31.79 14.21 12.81 13.83 12.11 6.91 21.27 1905 4.25 2.86 11.33 16.53 47.82 28.79 31.08 33.51 28.02 23.98 20.93 16.54 22.14 1906 11.16 8.52 16.99 58.13 46.09 47.52 43.82 36.47 30.41 26.61 26.67 16.99 30.78 1907 14.27 10.39 43.61 82.69 38.89 62.32 28.6 16.09 12.13 12.91 11.32 8.92 28.51 1908 8.21 7.08 14.16 31.15 19.57 48.85 35.78 19.71 13.08 11.74 10.19 8.5 19 1909 5.38 3.96 10.68 26.83 26.54 31.52 17.25 19.39 22.4 21.57 16.25 13.82 17.97 1910 11.53 9.17 60.21 40.36 27.37 13.91 6.23 2.42 1.36 1.65 1.27 1.05 14.71 1911 0.93 0.91 6.95 10.49 8.01 6.8 2.88 4.71 4.54 6.93 3.82 3.4 5.03 1912 2.52 2.27 2.52 15.97 20.6 14.96 13.67 9.35 6.34 7.04 7.08 5.38 8.98 1913 3.11 2.27 4.25 13.06 10.21 9.6 18.06 7.59 11.92 13.98 12.35 9.96 9.7 1914 8.21 5.66 9.26 18.86 24.82 43.89 28.68 14.46 15.33 16.5 15.06 11.61 17.7 1915 9.63 8.78 11.04 28.44 22.32 43.28 53.9 29.91 22.37 22.48 16.18 11.33 23.3 1916 7.5 7.19 18.29 172.04 71.97 59.97 154.46 52.34 35.35 29.1 17.87 13.82 53.33 1917 11.86 10.28 26.16 89.91 51.12 20.44 9.35 4.07 2.56 3.04 3.74 2.44 19.58 1918 1.19 0.92 9.69 10.66 12.6 12.47 7.12 5.27 3.29 2.71 3.5 2.89 6.03 1919 2.19 2.19 7.82 13.11 13.25 11.28 8.32 7.99 5.92 5.35 7.14 4.35 7.41 1920 4.39 4.25 47.52 25.15 26.29 34.49 27.19 14.1 12.97 13.2 11.72 8.65 19.16 1921 6.14 6.91 13.6 20.91 14.53 17.36 7.2 5.18 3.95 4.1 2.69 1.98 8.71 1922 0.71 0.65 52.56 74.83 30.37 19.67 8.74 2.5 1.05 1.14 2.73 1.65 16.38 1923 1.4 0.88 1.61 31.27 15.39 24.39 15.1 2.58 1.93 2.49 2.64 2.06 8.48 1924 1.47 1.42 2.04 7.56 8.57 5.8 4.68 2.41 2.59 4.59 3.52 1.54 3.85 1925 1.05 1.13 4.48 8.4 6.69 15.97 8.04 3.92 3.65 4.16 3.31 1.82 5.22 1926 1.37 1.77 13.43 9.97 5.77 4.88 1.63 1.36 1.57 2.9 2.15 1.3 4.01 1927 1.12 1.99 23.95 26 14.72 17.82 9.72 5.28 6.46 5.9 4.93 2.69 10.05 1928 2.72 2.46 26.87 14.14 10.5 8.36 8.32 2.21 3.21 3.86 4.33 3.49 7.54 1929 2.14 1.99 40.23 14.54 10.11 4.91 2.13 0.66 0.7 1.52 1.76 0.95 6.8 1930 1.03 4.21 20.13 11.28 16.71 8.22 4.11 1.08 0.46 0.86 1.07 0.7 5.82 1931 0.6 1.11 3.62 5.39 4.75 3.74 1.83 0.59 0.44 0.75 0.79 0.61 2.02 1932 1.02 1.34 3.82 6.56 1.58 0.94 0.22 0 0.25 0.4 0.19 0.05 1.36 1933 0 0.01 3.66 5.86 2.09 1.45 0.43 0.05 0 0.13 0.07 0.38 1.18 1934 0.4 0.58 1.22 2.89 0.23 0.09 0 0 0 0 0.02 0.02 0.45 1935 0 0.33 10.94 4.29 3.19 2.45 5.2 0.92 0.24 0.14 0.05 0.02 2.31 1936 0.39 0.16 4.57 12.12 2.46 0.08 0 0 0 0 0 0.12 1.66 1937 0.12 0.03 0.76 12.59 7.16 5.19 3.04 1.58 3.95 2.52 1.67 0 3.22 1938 0.15 0.42 6.69 4.63 12.05 9.35 2.8 0.52 1.63 0.82 0.54 0.62 3.35 1939 2.66 2.78 20.93 19.98 6.03 3.69 2.42 0.34 0 0.28 0.49 0.4 5 1940 0.03 0.24 1.13 12.65 10.89 5.25 0.43 0.09 0 0.16 0.99 1.07 2.74 1941 1.21 2.46 7.15 18.24 9.19 13.74 3.68 0.72 2.31 2.64 3.54 2.78 5.64 1942 3.18 3.11 5.38 9.22 36.78 47.14 28 13.31 17.22 15.02 12.22 8.89 16.62 1943 9.03 7.7 13.13 174.54 52.66 79.38 49.98 21.83 12.13 11.35 10.51 8.23 37.54 1944 5.73 4.62 7.23 24.58 33.87 60.26 57 19.52 21.8 21.1 20.68 14.45 24.24 1945 12.2 11.02 79.67 47.31 28.3 31.36 10.63 4.39 3.81 6.18 7.03 6.21 20.68 1946 5.29 3.19 43.9 38.16 18.12 11.91 19.98 16.96 14.27 16.38 15.16 13.89 18.1 1947 11.72 9.59 14.53 100.17 53.25 45.66 32.53 7.01 5.71 6.15 5.79 5.18 24.77 1948 3.97 2.93 6.11 51.13 45.85 17.71 7.75 6.17 4.87 4 2.94 1.79 12.94 1949 1.85 2.44 5.12 20.33 7.11 6.36 24.69 6.51 2.5 2.23 2.28 2.71 7.01 1950 2.5 3.78 14.93 103.89 94 50.06 43.06 21.76 6.05 4.11 2.74 3.31 29.18 1951 4.34 4.34 7.24 91.56 48.49 31.56 17.92 10.99 9.66 9.88 9.58 14.48 21.67 1952 14.98 15.15 15.1 205.48 60.85 45.56 35.95 12.07 12.61 9.18 7.04 5.26 36.6 1953 3.91 5.19 19.42 19.58 35.48 92.91 43.57 25.47 16.1 10.59 13.51 11.68 24.78 1954 10.11 9.74 17.88 24.44 26.73 33.68 20.42 6.61 6.81 4.36 4.06 4.84 14.14 1955 6.28 5.29 7.83 24.43 10.63 9.12 19.97 12.92 12.87 11.4 8.47 4.94 11.18 1956 6.75 6.22 7.1 39.92 23.62 23.53 8.15 7.53 3.23 1.76 1.25 1.67 10.89 1957 2.47 2.96 12.99 25.54 27.23 31.49 25.45 16.26 17.76 12.76 13.25 11.86 16.67 1958 9.15 8.68 16.26 24.05 10.73 4.65 22.49 6.44 4.91 4.19 4.32 4.55 10.04 1959 6.94 6.87 10.31 11.54 12.11 19.47 17.48 6.12 4.67 4.08 3.52 5.85 9.08 1960 5.89 6.46 8.75 42.29 27.05 23.64 14.97 5.07 3.06 2.25 3.69 3.6 12.23 1961 4 4.8 11.96 9.11 12.13 12.04 5.02 2.31 1.49 2.9 2.94 2.04 5.9 1962 2.15 2.42 5.75 74.12 94.92 145.03 161.18 76.2 23.91 14.59 12.02 8.57 51.74 1963 8.18 5.36 11.91 22.02 17.84 67.86 14.99 5.4 4.22 5.96 4.91 4.25 14.41 1964 3.93 4.81 5.49 33.47 32.33 20.81 10.9 2.66 3.34 6.7 5.87 5.94 11.35 1965 5.49 5.23 5.87 105.91 46.66 78.93 42.89 15.18 14.37 23.36 16.05 14.5 31.2 1966 13.91 13.88 106.35 64.25 65.48 51.24 22.49 25.48 11.61 13.25 13.48 13.01 34.54 1967 12.12 10.88 25.56 63.67 44.06 58.93 34.48 7.34 2.42 4.86 4.56 4.69 22.8 1968 3.81 3.83 10.58 14.23 19.1 18.12 12.32 6.31 4.44 8.25 8.16 7.02 9.68 1969 6.58 9 13.62 281.01 101.19 41.99 17.83 5.92 1.39 2.44 3.4 3.16 40.63 1970 4.37 4.93 7.08 29.08 23.75 34.17 14.46 3.1 0.4 1.74 4.6 3.51 10.93 1971 3.9 3.54 16.02 18.78 10.69 10.44 20 3.99 6.97 7.45 17.18 16.1 11.26 1972 15.69 11.56 69.9 63.86 57.19 50.6 26.61 19.68 12.3 12.42 10.19 11.15 30.1 1973 10.87 12.48 27.7 15.32 9.57 8.02 4.39 3.27 3.4 11.01 16.13 15.78 11.5 1974 13.62 14.7 20.72 37.17 30.01 31.38 20.04 10.06 6.37 8.39 7.35 5.24 17.09 1975 5.33 7.58 11.01 90.64 41.43 68.8 152.3 20.05 12.29 10.15 9.91 6.12 36.3 1976 6.52 8.21 28.38 29.44 9.65 4.73 2.58 0.99 0.35 0.11 0.34 0.33 7.64 1977 0.42 0.54 2.41 5.49 2.18 2.58 2.12 0.52 5.03 9.43 8.81 10.82 4.2 1978 11.49 9.28 36.63 196.13 49.72 35.08 43.97 10.31 3.22 4.38 3.08 2.85 33.85 1979 2.77 2.63 7.53 191.64 72.96 54.87 41.36 28.66 17.98 11.68 10.15 8.73 37.58 1980 10.69 10.93 19.15 50.85 16.62 16.45 4.55 3.53 0.89 1.57 2.83 2.78 11.74 1981 2.43 3.96 6.94 7.19 9.81 6.55 6.29 7.71 1.26 3.72 5.24 5.39 5.54 1982 6.38 6.85 20.53 68.17 26.25 23.07 17.62 8.89 5.38 13.58 10.26 9.42 18.03 1983 8.34 8.52 19.88 17.9 11.18 6.44 16.38 8.61 10.26 8.8 8.05 6.6 10.91 1984 7.14 9.91 45.82 94.78 33.16 59.74 29.05 10.8 5 14.75 14.22 9.48 27.82 1985 7.16 9.38 41.58 31.2 37.98 61.59 38.17 32.51 29.7 23.45 20.34 22.24 29.61 1986 20.95 18.74 54.15 160.53 129.94 73.06 56.91 25.81 48.34 40.62 25.29 22.66 56.42 1987 20.02 22.03 40.07 26.24 18.92 14.37 10.34 4.34 4.32 4.06 4.01 3.81 14.38 1988 4.07 6.92 17.14 14.5 11.11 6.17 1.78 1.96 1.85 1.59 1.38 0.87 5.78 1989 1.33 3.94 8.25 180.3 32.41 24.53 9.06 4.42 6.43 5.28 3.57 2.86 23.53 1990 2.65 4.18 9.17 14.04 15.48 16.82 11.3 6.42 4.97 3.74 2.32 2.05 7.76 1991 2.06 2.45 9.47 16.08 26.26 31.6 47.06 16.64 21.24 9.59 4.69 4.17 15.94 1992 5.48 7.61 20.83 14.14 12.97 25.35 13.97 14.14 9.51 6 6.37 5.56 11.83 1993 5.94 8.07 21.98 113.06 37.6 54.06 116.65 93.24 64.55 49.29 20.91 13.2 49.88 1994 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 5.61 5.58 18.08 47.09 27.61 28.47 23.55 11.5 8.94 8.64 7.52 6.21 16.57 Std Dev 4.59 4.28 18.21 54.12 23.73 25.03 30.16 14.63 10.57 8.66 6.25 5.24 12.58