10336780 TROUT CREEK NEAR TAHOE VALLEY, CA
LOCATION.--Lat 38°55'12", long 119°58'17", in NW 1/4 SE 1/4 sec.3, T.12 N., R.18 E., El Dorado County, Hydrologic
Unit 16050101, on left bank 5 ft upstream from Martin Avenue Bridge, 500 ft upstream from Heavenly Valley
Creek, and 1.8 mi east of Tahoe Valley.
DRAINAGE AREA.--36.7 mi2.
PERIOD OF RECORD.--October 1960 to current year.
SPECIFIC CONDUCTANCE: March 1981 to September 1983.
WATER TEMPERATURE: October 1971 to June 1974, October 1977 to June 1978, March 1980 to September 1985,
October 1987 to September 1988.
SUSPENDED-SEDIMENT DISCHARGE: October 1971 to June 1974, October 1977 to June 1978, March 1980 to September
1985, October 1987 to September 1988.
GAGE.--Water-stage recorder and sharp-crested weir in culvert at bridge. Datum of gage is 6,241.57 ft above sea
level.
REMARKS.--Records good except for estimated daily discharges, which are fair. Minor diversions for local water
supply upstream from station. See schematic diagram of Truckee River basin.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 535 ft3/s, Feb. 1, 1963, gage height, 11.14 ft, from rating
curve extended above 250 ft3/s on basis of computation of peak flow (weir formula); no flow for part of
Sept. 11, 1966.
EXTREMES FOR CURRENT YEAR.--Peak discharges greater than base discharge of 100 ft3/s, or maximum:
Discharge Gage height Discharge Gage height
Date Time (ft3/s) (ft) Date Time (ft3/s) (ft)
Dec. 12 1245 126 7.83 Apr. 16 1445 129 7.77
Feb. 5 0630 103 7.40 May 16 1030 303 9.70
DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 31 23 21 22 22 e40 58 124 132 83 e41 e26
2 31 23 21 21 21 40 61 130 143 82 e40 e26
3 31 23 20 22 21 40 57 129 158 80 e40 e25
4 30 23 31 22 45 43 55 123 172 78 e39 e25
5 29 24 26 21 93 41 57 123 182 76 e39 e25
6 29 23 23 21 61 46 61 126 192 73 e38 e24
7 29 23 21 20 50 46 69 124 205 71 e38 e24
8 28 23 21 20 47 44 79 127 210 70 e37 e24
9 27 23 21 19 47 43 86 126 207 69 e36 e24
10 27 23 20 19 45 44 82 131 200 69 e36 e24
11 27 23 34 19 43 45 75 139 190 70 e36 e24
12 27 23 97 19 42 45 73 154 182 75 e37 e23
13 27 23 47 19 40 43 68 166 178 80 e38 e23
14 27 23 34 19 40 41 71 174 169 75 e35 e23
15 26 23 28 20 38 41 80 193 160 72 e33 e23
16 26 22 e25 45 40 42 116 267 152 69 e32 e23
17 26 22 e24 40 44 43 91 214 144 e69 e32 e23
18 26 21 e23 31 44 46 90 225 137 e67 e32 e22
19 25 20 e22 27 56 51 76 180 132 e65 e31 e22
20 24 20 e21 e27 56 56 71 161 128 e63 e31 e22
21 24 20 e20 26 41 59 67 153 123 e61 e31 e22
22 24 20 e19 e27 41 57 66 147 118 e59 e30 e22
23 24 20 e18 27 e40 51 74 139 113 e57 e30 e22
24 24 20 e17 e27 e39 49 92 135 111 e55 e30 e22
25 24 20 e16 e26 e38 48 96 127 120 e53 e29 e21
26 24 25 e14 e26 e38 47 103 126 121 e51 e29 e21
27 25 21 14 e25 e38 50 110 132 110 e49 e28 e21
28 25 21 14 e24 e38 56 105 126 98 e47 e28 e21
29 24 22 15 e23 e39 50 103 127 90 e45 e27 e21
30 24 21 21 23 --- 50 115 126 86 e43 e27 e21
31 24 --- 25 22 --- 52 --- 127 --- e41 e26 ---
TOTAL 819 661 773 749 1247 1449 2407 4601 4463 2017 1036 689
MEAN 26.4 22.0 24.9 24.2 43.0 46.7 80.2 148 149 65.1 33.4 23.0
MAX 31 25 97 45 93 59 116 267 210 83 41 26
MIN 24 20 14 19 21 40 55 123 86 41 26 21
AC-FT 1620 1310 1530 1490 2470 2870 4770 9130 8850 4000 2050 1370
e Estimated.
10336780 TROUT CREEK NEAR TAHOE VALLEY, CA--Continued
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1961 - 1996, BY WATER YEAR (WY)
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
MEAN 16.9 19.3 20.5 22.4 24.5 29.3 43.0 77.3 91.6 48.6 23.7 17.0
MAX 37.6 61.1 64.0 60.3 68.7 85.0 81.9 184 286 188 88.7 49.6
(WY) 1983 1984 1984 1970 1986 1986 1982 1969 1983 1995 1983 1983
MIN 5.19 7.43 8.18 8.00 8.02 11.0 15.7 14.2 10.9 5.21 3.43 3.71
(WY) 1989 1978 1991 1991 1991 1977 1988 1988 1988 1988 1977 1977
SUMMARY STATISTICS FOR 1995 CALENDAR YEAR FOR 1996 WATER YEAR WATER YEARS 1961 - 1996
ANNUAL TOTAL 25100 20911
ANNUAL MEAN 68.8 57.1 36.2
HIGHEST ANNUAL MEAN 85.3 1983
LOWEST ANNUAL MEAN 10.2 1977
HIGHEST DAILY MEAN 280 Jun 26 267 May 16 352 Feb 1 1963
LOWEST DAILY MEAN 11 Jan 1 14 Dec 26 2.5 Sep 7 1988
ANNUAL SEVEN-DAY MINIMUM 11 Jan 1 15 Dec 23 3.0 Sep 9 1977
INSTANTANEOUS PEAK FLOW 303 May 16 535 Feb 1 1963
INSTANTANEOUS PEAK STAGE 9.70 May 16 11.14 Feb 1 1963
ANNUAL RUNOFF (AC-FT) 49790 41480 26220
10 PERCENT EXCEEDS 182 129 82
50 PERCENT EXCEEDS 40 38 22
90 PERCENT EXCEEDS 16 21 8.6
USGS Water Resources of California
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