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Peak Streamflow for Texas

USGS 08105700 San Gabriel Rv at Laneport, TX

Williamson County, Texas
Hydrologic Unit Code 12070205
Latitude  3041'39", Longitude  9716'43" NAD27
Drainage area 738  square miles
Contributing drainage area 738  square miles
Gage datum 412.60 feet above sea level NGVD29
Water
Year
Date Gage
Height
(feet)
Stream-
flow
(cfs)
1965 unknown 1965   14,600
1966 Apr. 24, 1966 29.86 25,300
1967 May 1, 1967 26.82 13,900
1968 Jan. 21, 1968 30.45 28,700
1969 Apr. 13, 1969 28.65 19,600
1970 May 16, 1970 23.40 8,520
1971 Jul. 31, 1971 18.55 5,430
1972 Jun. 16, 1972 23.24 8,360
1973 Oct. 22, 1972 26.63 13,600
1974 May 10, 1974 29.69 24,400
1975 Oct. 31, 1974 30.80 31,200
1976 Apr. 29, 1976 26.42 13,000
1977 Apr. 16, 1977 28.22 18,000
1978 Feb. 12, 1978 10.44 1,430
1979 Mar. 21, 1979 16.23 4,090
1980 Apr. 25, 1980 6.24 1326
1981 Jun. 21, 1981 17.88 5,1606
1982 May 17, 1982 13.85 2,8906
Water
Year
Date Gage
Height
(feet)
Stream-
flow
(cfs)
1983 May 25, 1983 12.60 2,3306
1984 Jun. 17, 1984 9.07 9356
1985 Dec. 21, 1984 10.31 1,4006
1986 Feb. 13, 1986 13.23 2,6006
1987 Jun. 24, 1987 13.85 2,8906
1988 Nov. 25, 1987 7.18 3646
1989 May 28, 1989 10.21 1,3606
1990 May 9, 1990 12.08 2,2906
1991 Apr. 19, 1991 10.07 1,6206
1992 Mar. 5, 1992 21.86 7,5406
1993 Jul. 1, 1993 12.67 2,6406
1994 May 17, 1994 8.64 9156
1995 Jun. 5, 1995 9.87 1,4706
1996 Sep. 21, 1996 10.17 1,6606
1997 May 6, 1997 13.40 2,8806
1998 Jan. 11, 1998 11.82 2,2206
1999 Nov. 1, 1998 11.21 1,8206
2000 May 2, 2000 7.27 4106
2001 Jul. 1, 2001 11.16 1,7006
Peak Streamflow Qualification Codes.
  • 6 -- Discharge affected by Regulation or Diversion