USGS 08151500 Llano Rv at Llano, TX
Llano County, Texas
Hydrologic Unit Code 12090204
Latitude 30°45'04", Longitude 98°40'10" NAD27
Drainage area 4,197 square miles
Contributing drainage area 4,192 square miles
Gage datum 970.01 feet above sea level
NGVD29
|
Water
Year |
Date |
Gage
Height
(feet) |
Stream-
flow
(cfs) |
| 1935 |
unknown 1935 |
41.50 |
380,0007 |
| 1940 |
Jun. 20, 1940 |
12.90 |
28,200 |
| 1941 |
Apr. 27, 1941 |
12.64 |
26,700 |
| 1942 |
Aug. 23, 1942 |
11.22 |
23,400 |
| 1943 |
Jun. 5, 1943 |
16.92 |
50,600 |
| 1944 |
May 25, 1944 |
8.24 |
10,100 |
| 1945 |
Jan. 18, 1945 |
7.61 |
8,500 |
| 1946 |
May 17, 1946 |
10.47 |
18,200 |
| 1947 |
Jan. 18, 1947 |
7.55 |
8,500 |
| 1948 |
Jun. 25, 1948 |
22.90 |
108,000 |
| 1949 |
Apr. 25, 1949 |
9.78 |
14,600 |
| 1950 |
May 16, 1950 |
7.49 |
7,770 |
| 1951 |
May 25, 1951 |
9.27 |
13,900 |
| 1952 |
Sep. 10, 1952 |
32.60 |
232,000 |
| 1953 |
May 12, 1953 |
11.88 |
16,500 |
| 1954 |
Oct. 4, 1953 |
7.09 |
3,460 |
| 1955 |
May 19, 1955 |
19.00 |
72,000 |
| 1956 |
Aug. 31, 1956 |
5.82 |
1,850 |
| 1957 |
May 27, 1957 |
16.39 |
47,200 |
| 1958 |
Oct. 14, 1957 |
21.78 |
83,700 |
| 1959 |
Jun. 26, 1959 |
14.06 |
35,600 |
| 1960 |
Oct. 4, 1959 |
22.28 |
103,000 |
| 1961 |
Jun. 19, 1961 |
18.87 |
57,600 |
| 1962 |
Jun. 2, 1962 |
4.48 |
1,700 |
| 1963 |
Sep. 16, 1963 |
4.58 |
1,810 |
| 1964 |
Sep. 24, 1964 |
20.10 |
67,200 |
| 1965 |
May 16, 1965 |
12.66 |
24,800 |
| 1966 |
Apr. 25, 1966 |
9.97 |
15,400 |
| 1967 |
May 20, 1967 |
12.56 |
27,400 |
| 1968 |
Jan. 20, 1968 |
16.22 |
44,400 |
| 1969 |
May 7, 1969 |
6.22 |
4,520 |
|
|
Water
Year |
Date |
Gage
Height
(feet) |
Stream-
flow
(cfs) |
| 1970 |
Oct. 5, 1969 |
27.02 |
154,000 |
| 1971 |
Aug. 12, 1971 |
14.14 |
28,000 |
| 1972 |
Oct. 20, 1971 |
13.37 |
24,5005 |
| 1973 |
Aug. 1, 1973 |
9.11 |
11,4005 |
| 1974 |
Oct. 13, 1973 |
26.98 |
154,0005 |
| 1975 |
May 24, 1975 |
10.92 |
19,4005 |
| 1976 |
Jul. 4, 1976 |
17.92 |
61,5005 |
| 1977 |
Apr. 16, 1977 |
18.66 |
67,5005 |
| 1978 |
Aug. 3, 1978 |
25.61 |
139,0005 |
| 1979 |
Jun. 1, 1979 |
12.31 |
25,8005 |
| 1980 |
Sep. 8, 1980 |
31.11 |
210,0005 |
| 1981 |
Jun. 18, 1981 |
14.24 |
32,9005 |
| 1982 |
Oct. 14, 1981 |
23.79 |
116,0005 |
| 1983 |
Jun. 6, 1983 |
7.58 |
5,9705 |
| 1984 |
Jul. 28, 1984 |
3.29 |
4905 |
| 1985 |
Dec. 31, 1984 |
24.00 |
119,0005 |
| 1986 |
Oct. 20, 1985 |
16.47 |
47,1005 |
| 1987 |
Jun. 4, 1987 |
14.04 |
35,2005 |
| 1988 |
Jul. 12, 1988 |
19.21 |
72,1005 |
| 1989 |
Jun. 11, 1989 |
5.33 |
3,3105 |
| 1990 |
May 3, 1990 |
20.94 |
87,9005 |
| 1991 |
Sep. 17, 1991 |
8.14 |
9,5305 |
| 1992 |
Feb. 4, 1992 |
20.51 |
83,7005 |
| 1993 |
Nov. 19, 1992 |
7.25 |
7,1605 |
| 1994 |
May 15, 1994 |
7.34 |
7,3905 |
| 1995 |
May 30, 1995 |
9.26 |
13,0005 |
| 1996 |
Aug. 30, 1996 |
8.14 |
9,5305 |
| 1997 |
Jun. 23, 1997 |
38.86 |
260,0005 |
| 1998 |
Aug. 24, 1998 |
14.05 |
34,7005 |
| 1999 |
Mar. 18, 1999 |
14.64 |
37,8005 |
| 2000 |
May 2, 2000 |
4.21 |
2,0205 |
| 2001 |
Nov. 4, 2000 |
29.05 |
151,0005 |
|
|
