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Peak Streamflow for the Nation

USGS 08150700 Llano Rv nr Mason, TX

Mason County, Texas
Hydrologic Unit Code 12090204
Latitude  30°39'38", Longitude  99°06'32" NAD27
Drainage area 3,247  square miles
Contributing drainage area 3,242  square miles
Gage datum 1,225.60 feet above NAVD88
Output formats
Table
Graph
Tab-separated file
peakfq (watstore) format
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Water
Year		 Date Gage
Height
(feet)		 Stream-
flow
(cfs)
1889 1889   218,0007,Bm
1935 1935-06-14 46.00 380,0007
1952 1952   258,0007,Bm
1968 1968-05-05 10.38 18,100
1969 1969-06-24 5.77 3,080
1970 1969-10-05 18.53 55,700
1971 1971-08-12 12.94 31,600
1972 1971-10-20 11.40 23,200
1973 1973-07-31 8.94 12,000
1974 1973-10-13 26.30 151,000
1975 1975-05-24 6.42 5,040
1976 1976-09-02 12.48 26,900
1977 1977-04-16 16.64 52,000
1978 1978-08-03 21.35 92,500
1979 1979-06-01 12.20 25,500
1980 1980-09-08 37.00 260,000
1981 1981-06-17 12.71 29,800
1982 1981-10-13 25.06 114,000
1983 1983-05-21 2.15 471
1984 1984-05-20 1.94 367
1985 1984-12-31 25.22 115,000
1986 1985-10-19 16.18 48,300
1987 1987-06-04 12.35 24,900
1988 1988-07-12 18.40 61,600
1989 1989-05-17 4.34 1,800
1990 1990-05-03 17.49 55,200
1991 1991-09-17 10.13 16,400
1992 1992-02-25 8.87 11,800
1993 1992-12-15 2.16 496
1994 1994-05-15 7.27 6,780
1995 1995-09-22 8.75 11,400
1998 1998-08-24 16.38 49,300
1999 1999-06-22 2.67 743
2000 2000-09-25 4.07 1,820
2001 2000-11-04 32.00 170,000
2002 2001-11-15 17.74 60,100
2003 2003-09-19 4.40 2,360
2004 2004-06-09 8.21 10,900
2005 2004-11-17 21.50 88,600
2006 2006-05-08 3.43 1,390
2007 2007-08-17 11.82 25,900
2008 2008-04-27 4.83 3,050
2009 2009-04-28 6.31 5,180
2010 2010-05-26 9.71 13,800
2011 2011-05-12 0.98 165
2012 2012-05-11 7.27 6,550
2013 2013-09-21 7.82 7,750
2014 2014-05-26 5.77 3,630
2015 2015-05-21 11.24 19,400
2016 2016-05-29 8.15 8,530
2017 2017-06-27 4.26 1,550
2018 2018-09-22 12.02 22,700
2019 2018-10-16 34.21 201,000
2020 2020-03-21 6.30 4,750
2021 2021-05-30 2.772 666
2022 2021-10-01 10.99 3,610
2023 2023-05-20 10.97 3,490
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  Peak Gage-Height Qualification Codes.
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  Peak Streamflow Qualification Codes.