Country= U.S.A. Station= ALCOVA, WY River= NORTH PLATTE RIVER Area= 28001.42 Lat= 42.57 Lon= -106.69 Source= USGS PointID= 6642000 Area Units= km2 Discharge Units= m3/sec Starting Year= 1902 Ending Year= 1993 Total Years= 92 Total Usable Years= 90 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1902 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1903 20.17 25.42 41.18 76.71 132.21 240.07 74.52 17.98 18.86 27.8 20.24 16.99 59.35 1904 14.16 19.82 33.72 48.47 172 263.73 79.31 20.23 13.82 18.46 14.24 11.65 59.13 1905 9.91 14.16 30.58 72.01 190.94 299.46 93.1 29.45 10.83 12.31 15.83 11.33 65.83 1906 7.08 8.5 33.7 117.27 186.43 254.54 99.49 38.24 19.01 17.8 35.92 28.32 70.52 1907 22.65 25.49 70.75 103.26 182.01 376.99 212.72 52.47 28.14 27.77 29.88 19.57 95.98 1908 22.57 22.17 30.76 55.59 132.78 297.41 63.41 32.49 16.52 17.39 18.1 14.16 60.28 1909 14.16 16.99 22.65 42.48 187.55 308.71 218.04 177.89 85.22 97.64 28.35 21.6 101.77 1910 18.49 17.45 61.53 62.54 34.33 57.27 57.19 49.41 47.94 23.65 18.82 11.65 38.36 1911 17.47 23.77 35.45 48.1 54.12 91.11 91.98 77.95 63.75 30.14 18.31 13.33 47.12 1912 10.85 11.64 11.61 53.97 89.64 114.7 159.88 184.63 172.43 161.12 73.91 19.11 88.62 1913 17.9 12.62 15.29 43.18 63.09 92.52 83.47 75.39 66.5 19.15 7.23 5.9 41.85 1914 6.05 5.78 11.77 32.53 104.85 117.3 123.52 131.65 130.88 70.57 19.37 3.28 63.13 1915 2.81 3.62 7.31 36.23 60.63 103.26 117.84 94.7 84.57 22.44 11.68 7.58 46.06 1916 4 8.62 12.84 33.49 103.95 122.31 135.86 113.07 58.91 28.42 6.4 5.51 52.78 1917 4.84 6.14 19.24 38.87 130.49 435.52 280.23 129.11 120.82 49.06 12.86 6.79 102.83 1918 4.69 3.97 8.55 50.4 183.55 211.91 176.84 136.03 101.21 30.71 11.42 7.17 77.2 1919 6.3 8.23 5.44 13.4 75.51 145.23 113.39 101.4 57.78 42.56 6.53 2.82 48.22 1920 3.63 4.09 17.32 25.91 153.81 247.74 164.39 119.78 81.75 48.33 7.76 5.25 73.31 1921 6.78 13.75 11.07 41.98 96.68 317.97 161.8 123.48 82.67 41.37 7.33 4.51 75.78 1922 4.59 7.04 9.16 7.67 157.24 146.44 130.85 112.68 82.78 39.53 6.8 4 59.07 1923 6.14 4.86 8.11 25.23 77.63 118.21 161.42 117.84 120.06 34.25 15.16 8.38 58.11 1924 6.91 14.56 14.73 160.84 223.7 164.24 188.31 167.64 120.91 39.42 14.22 8.5 93.67 1925 7.2 16.62 13.05 31.3 89.59 118.2 152.07 129.02 105.87 11.85 8.06 7.71 57.54 1926 11.71 10.71 11.5 55.1 100.86 153.62 170.68 142.85 104.3 15.09 11.24 13.36 66.75 1927 18.77 14.63 9.81 30.7 93.98 148.13 158.83 133.06 105.5 18.29 13.21 8.95 62.82 1928 6.64 8.37 11.81 25.39 160.68 266.1 146.75 149.25 125.6 29.56 13.52 10.89 79.55 1929 10.61 9.3 30.32 31.72 111.35 313.41 169.61 156.14 116.67 26.76 11.75 12.5 83.35 1930 11.62 17.77 16.6 31.76 47.76 124.27 159.92 130.74 90.77 21.94 12.97 10.57 56.39 1931 7.93 8.12 9.33 15.53 70.26 154.02 135.39 115.69 25.48 14.56 13.34 6.78 48.04 1932 7.03 5.81 6.62 20.02 64.59 145.55 167.76 126.64 109.5 25.76 8.47 7.61 57.95 1933 5.83 5.71 6.64 14.31 90.56 153.97 158.57 142.77 97.15 19.28 8.18 9.61 59.38 1934 6.29 7.36 7.84 11.99 54.49 50.22 46.81 51.5 7.11 5.57 2.54 2.38 21.18 1935 3.25 4.16 5.21 5.25 18.93 52.53 135.08 111.22 40.53 7.35 6.31 6.22 33 1936 5.97 5.81 5.83 20.6 110.28 95.34 113.62 95.13 33.68 8.9 8.94 7.59 42.64 1937 7.66 5.03 7.19 13.48 74.61 98.77 144.06 134.14 85.71 8.45 6.95 7.78 49.49 1938 7.47 7.8 6.97 27.4 56.81 99.54 125.65 135.36 67.22 11.22 8.33 8.11 46.82 1939 6.83 8.72 8.69 14.39 118.67 92.63 109.68 99.67 41.46 7.72 6.37 3.98 43.23 1940 4.72 4.8 4.33 3.53 48.53 69.09 71.19 67.48 11.97 5.25 4.16 3.98 24.92 1941 3.34 3.39 3.17 15.21 80.01 77.53 93.33 111.52 69.15 0.47 4.36 9.79 39.27 1942 5.51 3.8 0.89 28.54 103.83 58.07 127.17 127.26 77.81 3.89 5.99 8.18 45.91 1943 8.76 5.5 6.67 34.09 55.67 69.73 132.87 130.54 78.1 0.77 4.82 3.9 44.29 1944 3.34 0.73 6.71 25.69 58.88 79.43 125.47 131.21 83.67 0.78 3.84 3.92 43.64 1945 4 3.98 9.45 24.12 71.83 51.07 119.07 119.51 94.98 0.68 5.18 6.48 42.53 1946 6.03 6.14 6.66 28.18 62.74 92.13 126.04 125.74 62.2 0.54 3.65 5.59 43.8 1947 6.22 5.34 15.55 28.47 54.93 44.34 99.7 132.19 86.29 0.71 3.06 3.76 40.05 1948 7.36 6.87 19.32 30.54 63.87 79.13 123.19 128.08 79.16 4.43 6.76 6.04 46.23 1949 7 5.63 1.15 25.45 39.37 60.15 136.66 135.08 74.84 10.72 3.04 3.97 41.92 1950 4.4 5.9 13.7 23.27 52.73 111.88 131.31 126.33 77.83 6.31 2.43 4.94 46.75 1951 5.07 4.89 1.57 25.93 55.41 71.15 115.55 129.66 72.08 10.46 4.67 0.51 41.41 1952 0.34 1.73 3.93 35.06 110.91 165.14 133.65 135.29 106.19 12.62 3.42 3.75 59.34 1953 4.35 4.51 10.55 24.71 52.14 69.98 126.28 101.6 75.79 0.38 0.67 0.84 39.32 1954 0.74 19.39 1.34 0.57 38.28 36.6 100.69 90.76 32.81 0.43 0.58 9.27 27.62 1955 0.37 0.33 0.47 22.01 9.36 12.1 78.1 102.22 62.35 0.29 0.4 7.5 24.63 1956 0.52 0.31 4.84 15.42 46.26 81.58 113.11 115.86 37.05 0.31 0.33 0.35 34.66 1957 0.43 0.6 21.97 0.33 30.25 39.8 129.71 124.51 64.46 0.32 0.28 0.31 34.41 1958 0.35 0.37 0.4 18.68 53.71 57.44 128.24 136.61 91.76 2.19 0.24 0.5 40.87 1959 0.47 0.55 11.94 11.75 21.72 57.45 121.5 134.17 88.15 0.76 0.15 0.16 37.4 1960 0.22 0.26 13.14 11.44 7.34 90 144.81 122.68 38.04 0.11 0.18 0.51 35.73 1961 0.19 0.06 18.45 10.41 0.61 17.44 131.69 106.73 31.21 0.09 0.05 0.05 26.41 1962 0.05 5.28 8.1 30.54 78.96 13.5 95.02 131.62 89.56 1.57 0.52 0.04 37.9 1963 0.07 0.61 7.31 26.42 66.09 24.72 146.82 134.4 83.8 12.99 0.22 0.05 41.96 1964 0.04 0.05 0.19 17.16 52.77 70.56 144.01 134.85 83.98 1.62 0.19 0.07 42.12 1965 0.13 0.25 0.25 23.54 83.78 55.85 113.78 133.99 76.85 2.18 0.56 0.08 40.94 1966 0.14 0.19 0.49 24.94 98.69 61.42 143.88 119.09 75.08 6.48 0.07 0.05 44.21 1967 0.06 0.06 0.12 18.77 39.41 27.98 106.44 137.25 93.08 2.24 1.18 1 35.63 1968 1.21 0.77 6.03 27.03 61.68 63.37 142.07 130.94 88.35 8.12 0.47 0.42 44.2 1969 0.47 0.5 7.26 28.24 83.93 46.36 134.27 142.89 95.89 11.6 0.24 0.06 45.98 1970 0.08 0.09 0.08 17.42 67.06 79.89 135.83 133.71 87.67 10.34 0.44 0.04 44.39 1971 0.05 0.05 0.16 66.96 143.48 188.21 167.82 135.7 83.47 9.49 0.06 0.05 66.29 1972 0.06 9.52 57.22 26.05 66.18 108.93 141.26 127.76 80.43 5.85 0.44 0.07 51.98 1973 0.07 0.06 3.22 52.68 136.83 258.18 194.43 204.18 110.85 13.28 0.82 0.07 81.22 1974 0.07 2.6 108.65 112.48 108.78 158.41 143.87 129 78.86 8.09 0.06 0.06 70.91 1975 0.06 0.08 0.08 13.59 72.26 73.09 155.44 137.68 93.34 14.01 0.04 0.04 46.64 1976 0.05 0.06 0.06 19.1 61.37 70.39 147.66 130.71 96.36 14.75 0.1 0.04 45.05 1977 0.07 0.07 0.07 10.9 83.06 62.2 138.36 101.56 75.37 0.34 0.41 0.26 39.39 1978 0.25 0.32 0.3 23.15 56 66.77 144.23 132.15 90.48 9.02 0.14 0.07 43.57 1979 0.08 0.09 0.14 12.42 58 60.68 141.51 135.14 86.28 7.47 0.14 0.17 41.84 1980 0.18 0.18 0.22 44.64 102.32 104.54 146.23 133.67 88.54 7.81 0.12 0.09 52.38 1981 0.07 0.07 0.06 3.64 13.47 90.6 137.5 121.35 79.31 6.19 0.08 0.12 37.71 1982 0.19 0.15 0.06 15.26 52.74 11.69 136.9 132.08 81.33 2 0.09 0.14 36.05 1983 0.19 0.21 0.21 37.39 79.57 153.63 251.03 255.86 184.57 2.57 1.23 0.47 80.58 1984 1.06 16.83 89.85 106.59 142.07 238.1 191.9 180.71 116.49 12.54 1.72 1.36 91.6 1985 0.62 4.3 48.58 23.06 84.84 103.64 149.61 140.42 89.56 9.63 0.08 0.05 54.53 1986 0.05 0.08 11.81 69.02 99.09 112.01 207.11 145.38 99.11 32.91 32.08 6.53 67.93 1987 0.49 0.18 0.22 35.87 41.37 58.66 144.75 115.45 68.5 0.64 0.1 0.08 38.86 1988 0.1 0.17 0.2 26.74 53.64 70.67 144.37 137.08 78.6 6.16 0.13 0.07 43.16 1989 0.07 0.12 0.2 14.62 50.66 64.32 144.96 122.31 41.22 0.07 0.04 0.04 36.55 1990 0.04 0.04 0.05 9.55 0.2 41.07 140.11 112.79 36.66 5.95 0.06 0.04 28.88 1991 0.04 0.04 0.04 7.36 11.72 61.22 137.38 130.66 75.28 2.35 0.08 0.05 35.52 1992 0.04 0.04 0.12 15.5 7.36 15.98 124.26 132.09 57.45 0.28 0.07 0.1 29.44 1993 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 4.85 6.03 13.31 32.7 81.47 118.9 136.49 120.94 76.71 15.81 7.12 5.08 51.62 Std Dev 5.67 6.64 19.12 27.02 47.59 87.87 37.6 36.24 32.64 22.4 10.57 5.7 18.12