Country= U.S.A. Station= HALFWAY WASH NR RIVERSIDE NV River= VIRGIN R Area= 15487.28 Lat= 36.67 Lon= -114.29 Source= USGS PointID= 9415230 Area Units= km2 Discharge Units= m3/sec Starting Year= 1938 Ending Year= 1993 Total Years= 56 Total Usable Years= 55 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1938 0.35 0.22 8.61 0.36 0.13 15.79 5.8 6.99 6.8 4.03 0.51 0.71 4.19 1939 0.52 0.15 10.15 5.28 11.1 11.09 8.95 5.26 10.18 0.97 0.36 0.47 5.37 1940 0.5 0.37 13.51 9.23 3.14 9.25 5.18 8.24 8.09 0.28 0.34 0.19 4.86 1941 0.14 0.12 16.84 19.39 75.9 61.89 31.91 20.55 99.87 62.31 14.35 6.67 34.16 1942 5.38 6.6 1.7 34.45 23.89 7.05 6.31 7.58 65.79 5.62 24.3 3.6 16.02 1943 4.77 0.82 3.2 5.79 0.62 14.17 2.07 13.4 8.33 1.05 1.11 1.28 4.72 1944 0.87 0.52 14.36 0.71 0.42 14.66 3.9 1.32 4.25 3.22 1.14 0.66 3.84 1945 0.57 0.19 0.03 16.71 0.29 7.69 0.1 2.5 6.73 1.08 0.67 0.3 3.07 1946 0.47 0.07 0.07 11.05 0.05 0.17 4.38 0.33 19.43 1.78 1.11 0.52 3.29 1947 0.42 0.04 3.73 8.8 2.11 0 10.77 0.03 0 0 0 0 2.16 1948 0 0.25 0.01 16.09 0.2 1.86 9.01 7.48 0 0 0.15 0 2.92 1949 0.08 0.25 0.01 12.96 3.26 12.62 6.17 6.11 23.04 9.96 1.88 1.02 6.45 1950 2.25 2.3 1.82 6.13 2.66 17.97 23.97 5.35 4.38 5.73 0.36 0.32 6.1 1951 0.38 0.32 12.11 2.29 6.26 9.31 16.14 2.57 0.63 0.57 0.54 0.15 4.27 1952 0.11 0.16 1.41 11.58 0.08 7.1 8.23 15.43 0.18 0.43 0.2 0.12 3.75 1953 0.03 0 1.36 9.99 0.15 0.11 6.65 12.75 2.95 0.03 0.15 0.01 2.85 1954 0.03 0 0 9.09 7.39 0.34 0.01 6.48 0.13 33.07 1.56 0.84 4.91 1955 0.83 0.83 0.58 0.45 2.33 9 16.62 0.92 33.16 6.1 0.73 0.42 6 1956 0.48 0.66 0.39 0.3 2.07 6.97 11.35 15.63 0.82 0 1.18 0.1 3.33 1957 0.16 0.12 5.2 0.21 2.08 1.95 6.64 13.53 6.12 1.32 0.33 0.12 3.15 1958 0.33 0.09 8.76 12 30.25 11.75 3.56 14.56 16.01 2.79 2.38 2.55 8.75 1959 1.13 2.28 1.03 0.71 8.99 2.17 13.02 14.43 0.27 0.38 0.98 0.8 3.85 1960 0.62 0.22 8.36 2.47 10.7 7.75 45.63 5.87 1.39 11.57 2.83 3.51 8.41 1961 3.53 3.09 2.06 2.33 3.31 9.18 17.86 9.95 0.89 1.21 1.88 1.28 4.71 1962 0.9 0.61 12.51 0.86 3.3 14.47 4.86 3.42 8.53 0.44 0.46 0.54 4.24 1963 0.44 0.64 11.46 0.58 0.18 11.87 13.37 11.96 3.37 0.41 0.44 0.3 4.58 1964 0.24 0.35 0.33 10.2 0.29 0.29 6.4 0.1 0.04 0 0.88 0.16 1.61 1965 0.07 0.09 10.09 1.38 2.31 5.61 12.98 0.97 1.25 0.2 0.27 0.14 2.95 1966 0.08 0.09 12.42 0.79 0.22 14.66 7.55 15.32 2.97 0.4 0.49 0.25 4.6 1967 0.27 0.36 0.25 0.1 22.67 1.93 0.79 11.04 0.38 0.21 0.36 0.33 3.22 1968 0.43 0.28 11.22 2.87 0.43 7.7 8.99 1.58 1.28 0.4 0.34 0.2 2.98 1969 0.19 0.44 12.02 7.6 0.66 13.81 8.83 13.97 18.21 4.4 1.57 0.88 6.88 1970 0.76 0.58 0.7 0.91 5.5 10.48 9.39 10.65 7.21 1.58 0.84 0.49 4.09 1971 0.37 0.36 0.37 9.37 9.7 0.33 0.15 11.36 0.86 0.89 0.65 0.41 2.9 1972 0.24 0.15 4.03 14.13 0.66 0.61 19.03 10.45 8.33 1.38 0.85 0.58 5.04 1973 0.62 0.54 0.66 12.1 35.72 13.37 7.56 3.14 1.3 8.57 0.88 0.56 7.08 1974 0.44 0.48 11.52 1.51 10.58 4.26 6.44 5.03 1.46 2.9 0.99 0.51 3.84 1975 0.45 0.44 0.18 0.35 0.06 18.36 7.87 0.35 0.63 0.27 0.31 0.22 2.46 1976 0.17 0.34 11.92 0.93 0.89 0.42 3.74 12.55 1.4 0.77 0.61 0.32 2.84 1977 0.25 0.21 9.55 1.91 1.75 0.02 7.37 8.83 3.26 3.05 0.74 0.25 3.1 1978 0.31 0.47 6.35 12.78 0.49 8 7.3 0.03 0.05 0.56 0.83 0.27 3.12 1979 0.46 0.29 0.09 0.18 9.36 13.85 3.13 3.98 0.84 8.03 1.05 0.64 3.49 1980 0.69 1 0.23 13.67 1.97 6.45 23.92 0.95 4.64 0.78 0.66 0.33 4.61 1981 0.26 0.1 0.21 0.18 2.43 9.29 1.62 3.86 2.11 1.74 0.68 0.26 1.89 1982 0.24 0.19 0.12 14.78 2.91 0.2 14.5 0.59 12.99 2.24 0.57 0.59 4.16 1983 0.53 0.35 0.17 0.44 14.51 0.66 20.86 2 11.9 2.55 1.92 0.39 4.69 1984 0.52 0.19 0.24 0.31 13.98 3.29 2.39 14.47 0.83 1.38 0.87 0.81 3.27 1985 0.52 0.39 0.5 0.55 0.95 16.05 1.33 12.98 4.27 4.61 0.93 0.43 3.63 1986 0.32 0.36 0.36 0.24 22.07 3.48 1.82 2.19 4.68 4.91 3.06 2.59 3.84 1987 3.88 6.64 9.59 10.15 16.5 11.67 3.53 4.9 8.55 3.89 1.43 0.65 6.78 1988 0.49 0.59 0.99 0.74 12.66 4.43 12.74 3.26 21.28 4.05 0.8 0.46 5.21 1989 0.31 0.79 0.26 12.64 23.86 6.74 0.45 0.57 1.46 0.5 0.53 0.21 4.03 1990 0.37 0.72 0.32 0.69 5.22 12.09 0.25 12.33 2.18 1.18 0.81 0.27 3.04 1991 0.32 0.58 0.27 1.44 18 1.29 16.19 9.69 20.4 3.55 1.72 1.37 6.24 1992 1.36 1.29 10.75 5.14 15.61 13.1 1.57 2.81 6.14 11.75 1.53 0.68 5.98 1993 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 0.74 0.72 4.64 6.14 8.23 8.52 9.11 7.14 8.77 4.2 1.58 0.76 5.05 Std Dev 1.1 1.28 5.18 6.79 12.53 9.09 8.45 5.4 16.34 9.35 3.63 1.1 4.52