Country= U.S.A. Station= ELM SPRINGS River= BELLE FOURCHE RIVER Area= 18672.79 Lat= 44.37 Lon= -102.56 Source= USGS PointID= 6438000 Area Units= km2 Discharge Units= m3/sec Starting Year= 1959 Ending Year= 1993 Total Years= 35 Total Usable Years= 34 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1959 0 0 11.9 3.73 1.64 1.17 0.63 0 0.1 0.23 0.06 0 1.62 1960 0 0 11.16 1.67 2.82 8.96 1.98 1.77 0.06 2.13 5.77 0.43 3.06 1961 0.22 1.15 3.51 0.94 1.96 1.72 0.78 0.91 1.94 0.43 0.3 0.08 1.16 1962 0 0.05 9.03 2.18 16.44 19.35 3.52 6.61 1.95 1.72 1.67 1.21 5.31 1963 0.51 2.99 10.23 4.08 1.58 1.95 2.84 6.58 4.87 4.58 2.2 1.32 3.64 1964 1.18 0.86 1.54 7.3 11.07 14.76 3.15 0.85 0.9 0.65 0.91 0.83 3.67 1965 0.81 1.12 1.91 14.87 21.65 24.5 6.92 3.01 4.3 5.42 3.13 1.84 7.46 1966 1.04 1.02 61.44 15.2 4.55 3.62 5.35 6.58 2.15 2.64 1.84 1.6 8.92 1967 1.13 3.26 12.37 4.72 14.11 29.6 8.85 2.8 2.62 2.15 2.36 1.22 7.1 1968 0.61 1.18 9.45 4.85 1.58 14.26 2.04 2.81 1.15 0.7 0.4 0.11 3.26 1969 0 0 36.56 47.74 8.17 5.38 17.2 3.18 1.58 2.08 1.92 1.85 10.47 1970 1.25 2.07 3.08 21.91 27.1 22.35 2.71 2.2 2.22 2.13 2.4 1.92 7.61 1971 1.38 1.77 73.12 41.74 13.36 15.88 10.12 2.7 3.28 3.72 3.48 2.55 14.43 1972 2.25 2.28 83.53 13.72 38.21 16.29 3.96 3.35 3.05 5.14 3.49 2.53 14.82 1973 24.56 22.15 32.76 8.46 8.74 6.27 3.51 2 7.06 4.78 3.07 2.08 10.45 1974 5.6 2.54 6.42 17.09 4.21 3.23 1.07 1.41 0.49 0.41 0.6 0.34 3.62 1975 0.08 0.33 2.94 35.49 36.67 15.63 4.47 2.34 1.7 1.15 0.84 0.33 8.5 1976 0.28 5.35 3.73 3.34 1.55 3.82 1.74 0.67 0.77 0.64 0.54 0.04 1.87 1977 0 0.57 3.18 2.81 0.6 0.76 3.55 0.5 6 4.91 0.21 0 1.92 1978 0 0 102.49 90.14 26.83 12.33 8.16 4.24 2.53 2.03 1.98 0.85 20.97 1979 0.08 0 14.36 27.7 8.12 6.67 2.64 2.36 5.39 6.55 0.96 0.61 6.29 1980 0.1 0 2.1 2.82 0.56 5.83 0.33 0.68 0.32 2.66 0.39 0.12 1.33 1981 0.12 0.24 0.52 0.29 0.15 1.41 4.84 5.27 2.22 0.54 0.47 0.15 1.35 1982 0.05 2.63 29.99 38.94 64.35 17.54 3.32 2.11 2.58 6.33 2.94 2.9 14.47 1983 2.24 2.76 15.73 3.8 17.92 4.01 5.84 3.18 3.18 2.94 1.23 0.15 5.25 1984 0.73 6.15 7.77 8.89 6.69 14.09 2.59 6.59 2.88 2.42 0.47 0.27 4.96 1985 0.08 1.94 20.27 4.44 1.97 1.55 0.79 2.82 1.65 1 0.47 0.58 3.13 1986 0.71 3.94 50.43 35.06 64.9 7.28 2.68 1.81 6.45 3.58 2.73 1.63 15.1 1987 1.59 2.24 109.47 34.43 11.58 4.59 5.88 2.78 2.48 2.05 1.58 1.04 14.98 1988 0.1 0.63 6.52 2.6 1.85 2.56 3.76 0.24 0.19 0.35 0.46 0.46 1.64 1989 0.36 0.15 21.15 8.82 8.98 0.58 0.58 0.65 0.8 0.44 0.61 0.25 3.61 1990 0.33 0.97 5.34 0.87 1.15 2.69 1.6 1.82 0.16 0.25 0.29 0.07 1.3 1991 0 0.21 2.07 2.13 11.5 5.35 0.31 0.17 0.19 0.34 0.11 0.1 1.87 1992 0.1 1.61 2.69 0.57 0.33 3.21 4.27 2.15 0.23 0.34 0.5 0.13 1.34 1993 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 1.4 2.12 22.61 15.1 13.03 8.8 3.88 2.56 2.28 2.28 1.48 0.87 6.37 Std Dev 4.17 3.8 29.36 18.95 16.34 7.63 3.34 1.87 1.89 1.88 1.3 0.85 5.18