Country= U.S.A. Station= FORSYTH, MT. River= YELLOWSTONE RIVER Area= 26157452.14 Lat= 46.26 Lon= -106.69 Source= USGS PointID= 6295000 Area Units= km2 Discharge Units= m3/sec Starting Year= 1895 Ending Year= 1969 Total Years= 75 Total Usable Years= 39 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1895 31.15 33.98 37.94 49.71 61.44 45.85 33.78 25.91 26.05 37.64 42.45 46.72 39.39 1896 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1897 42.48 42.48 42.48 93.45 242.96 121.3 66.66 22.47 21.47 28.74 36.81 39.64 66.74 1898 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1899 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1900 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1901 37.66 41.91 41.24 64.55 196.73 106.29 33.58 16.18 18.84 23.97 29.89 32.9 53.65 1902 30.87 30.87 30.87 53.05 142.32 143.82 70.82 22.68 20.93 30 41.3 46.1 55.3 1903 50.88 80.62 55.9 72.49 103.45 199.46 68.27 24.33 23.43 34.04 90.71 76.76 73.36 1904 39.64 39.64 40.51 91.09 184.45 153.98 58.11 17.15 16.03 23.29 37.02 35.41 61.36 1905 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1906 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1907 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1908 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1909 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1910 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1911 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1912 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1913 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1914 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1915 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1916 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1917 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1918 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1919 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1920 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1921 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1922 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1923 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1924 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1925 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1926 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1927 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1928 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1929 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1930 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1931 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1932 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1933 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1934 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1935 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1936 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 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 30.44 23.47 40.1 84.48 132.12 78.35 18.48 6.92 14.08 23.25 32.63 29.94 42.86 1940 27.18 30.16 39.77 55.77 81.14 53.11 6.08 4.69 14.17 44.76 41.05 34.8 36.06 1941 28.59 27.18 36.63 47.23 61.75 108.61 24.56 20.7 45.55 60.93 54.04 47.34 46.93 1942 30.06 36.26 46.97 135.22 162 236.33 67.05 16.07 23.83 32.26 45 41.01 72.67 1943 36.22 38.06 45.33 142.44 147.91 261.24 106.58 45.51 29.24 33.48 48.09 39.88 81.17 1944 30.37 34.76 32.25 47.49 66.44 219.51 100.91 37.24 30.92 34.85 42.31 30.51 58.96 1945 35.58 38.54 36.88 46.45 78.35 125.19 43.22 19.55 23.78 33.4 41.79 29.76 46.04 1946 29.84 28.96 36.33 72.37 109.88 91.74 49.82 14.38 53.33 66.2 57.23 48.73 54.9 1947 32.79 38.3 51.83 100.55 215.79 198.26 59.74 28.03 40.01 64.07 56.02 50.92 78.03 1948 43.79 38.91 44.13 94.22 228.14 345.3 98.1 41.19 36.16 50.75 54.93 41.85 93.12 1949 27.52 34.38 49.72 99.4 159.48 122.5 25.63 9.66 28.9 40.58 43.46 35.85 56.42 1950 26.54 32.17 41.1 60.75 73.62 194.17 79.53 32.93 38.59 55.44 50.78 46.25 60.99 1951 35.49 42.32 40.93 85.11 175.69 146.71 55.87 35.89 36.36 47.55 49.77 37.24 65.74 1952 28.5 30.56 43.69 99.61 199.53 123.74 56.46 24.12 27.18 28.8 38.3 33.17 61.14 1953 38.01 33.61 37.48 54.18 75.28 242.22 61.97 20.44 19.2 26.31 40.88 38.11 57.31 1954 30.85 36.85 35.49 54.44 78.93 82.63 48.26 15.46 16.94 21.98 33.37 29.53 40.39 1955 27.41 25.4 26.17 40.4 89.37 117.61 91.48 16.54 15.37 27.54 41.87 40.82 46.67 1956 35.62 29 45.71 95.44 186.51 138.11 32.82 15.28 21.46 24.51 41.31 34.59 58.36 1957 29.41 33.58 37.31 52.98 183.98 170.09 36.21 10.1 28.42 42.35 47.76 38.86 59.25 1958 33.05 33.28 35.83 57.63 152.08 161.02 63.56 18.05 28.43 36.13 46.41 42.97 59.04 1959 29.2 25.94 39.08 66.38 70.19 155.75 60.28 14.8 24.96 55.79 57.67 43.37 53.62 1960 26.86 29.54 54.26 90.48 102.34 104.57 20.88 15.93 22.78 26.64 41.79 33.39 47.45 1961 29.04 34.09 35.51 30.7 58.06 92.13 16.79 5.36 18.72 29.63 38.98 28.29 34.78 1962 18.5 23.77 37.39 88.25 116.98 139.69 50.68 26.48 31.99 40.81 48.01 45.28 55.65 1963 26.76 62.96 41.84 52.19 106.2 191.22 59.36 14.53 33.13 34.38 48.11 33.72 58.7 1964 37.02 37.85 34.39 51.08 106.98 300.44 93.27 22.63 34.25 33.72 41.06 46.4 69.92 1965 38.91 37 33.63 90.66 152.89 299.13 119.31 49.53 70.41 64.72 61.98 51.14 89.11 1966 43.89 39.35 38.25 62.72 56.86 41.11 15.55 5.69 13.28 27.24 35.58 30.93 34.2 1967 31.67 30.29 30.59 39 142.69 304.47 81.24 17.64 20.78 45.67 54.79 37.17 69.67 1968 34.8 36.65 46.83 63.93 97.64 197.98 52.17 31.19 41.75 55.88 57.69 47.53 63.67 1969 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 32.96 35.91 40.12 71.83 127.78 161.49 56.31 21.26 28.08 38.54 46.41 40.19 58.41 Std Dev 6.18 10.27 6.47 25.61 52.9 75.46 27.58 10.79 11.76 12.95 10.81 9 14.05