10336610 UPPER TRUCKEE RIVER AT SOUTH LAKE TAHOE, CA
LOCATION.-Lat 38°55'21", long 119°59'26", in NW 1/4 SE 1/4 sec.4, T.12 N., R.18 E., El Dorado County, Hydrologic Unit 16050101, on left
bank 200 ft downstream from U.S. Highway 50 Bridge, 1.0 mi northeast of South Lake Tahoe Post Office, and 1.4 mi upstream from Lake
Tahoe.
DRAINAGE AREA.-54.9 mi2.
WATER-DISCHARGE RECORDS
PERIOD OF RECORD.-October 1971 to September 1974, October 1976 to June 1977, October 1977 to June 1978, March 1980 to current year.
GAGE.-Water-stage recorder. Datum of gage is 6,229.04 ft above sea level. Prior to Apr. 26, 1984, at datum 2.00 ft higher. Prior to Oct. 19, 1993,
at site 200 ft upstream at same datum.
REMARKS.-Records fair except for Jan 1 and 2, which are poor. Two small dams may cause slight regulation at times. Some small diversions
for domestic use upstream from station. Echo Lake conduit (station 11434500) diverts from Echo Lake (station 10336608), to South Fork
American River Basin. See schematic diagram of Truckee River Basin.
EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 5,480 ft3/s, Jan. 2, 1997, gage height, 9.95 ft; minimum daily, 0.70 ft3/s, Aug. 22
to Sept. 5, 1994.
EXTREMES FOR CURRENT YEAR.-Peak discharges greater than base discharge of 300 ft3/s, or maximum:
Discharge Gage height Discharge Gage height
Date Time (ft3/s) (ft) Date Time (ft3/s) (ft)
Nov. 18 1015 763 5.66 Jan. 2 0430 5,480 9.95
Dec. 5 1430 791 5.75 Apr. 22 0345 680 5.08
Dec. 12 1700 728 5.53 May 13 0415 662 5.02
DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 9.4 15 66 2350 166 87 185 302 401 109 25 12
2 11 15 63 e3150 157 85 162 275 350 88 24 18
3 11 15 56 2280 143 83 148 275 313 74 23 39
4 9.9 15 55 1210 133 78 142 325 428 67 23 36
5 9.2 14 519 738 126 77 138 386 443 64 21 39
6 9.3 13 184 491 120 79 134 381 339 60 20 34
7 8.9 13 136 399 116 83 131 392 287 57 20 25
8 8.6 13 123 333 116 86 134 401 265 55 19 22
9 8.1 14 123 288 110 90 135 423 252 58 18 16
10 7.8 14 139 262 108 106 128 495 263 61 18 14
11 8.6 14 183 241 106 129 125 525 217 56 17 13
12 7.4 15 561 226 104 130 123 507 206 51 17 11
13 8.2 14 336 e211 101 121 123 566 202 48 17 10
14 8.0 15 190 e200 100 124 134 552 308 45 17 10
15 8.1 15 140 e190 101 139 152 490 287 38 16 12
16 8.2 17 117 179 104 151 179 413 251 36 15 26
17 8.3 143 103 164 108 149 219 394 229 35 15 19
18 9.4 613 93 157 104 148 249 406 216 33 15 13
19 13 345 87 153 104 161 405 393 197 32 15 11
20 11 280 82 150 104 181 446 385 175 31 14 11
21 11 166 e82 148 101 181 578 318 156 30 14 11
22 10 268 e82 e144 98 186 562 311 140 29 14 11
23 11 182 e82 e138 96 205 505 353 125 29 14 23
24 12 127 e83 e134 90 221 413 387 107 30 14 14
25 23 101 e83 e136 90 218 330 292 102 31 13 13
26 16 85 e83 e141 93 230 332 260 99 30 12 14
27 14 72 e84 e146 95 264 418 247 92 29 12 13
28 14 69 e85 e151 91 252 444 283 87 30 12 12
29 15 62 e90 e156 --- 229 342 320 88 30 12 12
30 16 58 e100 e161 --- 220 306 390 99 28 12 12
31 17 --- 738 164 --- 217 --- 428 --- 27 11 ---
TOTAL 342.4 2802 4948 14991 3085 4710 7822 11875 6724 1421 509 526
MEAN 11.0 93.4 160 484 110 152 261 383 224 45.8 16.4 17.5
MAX 23 613 738 3150 166 264 578 566 443 109 25 39
MIN 7.4 13 55 134 90 77 123 247 87 27 11 10
AC-FT 679 5560 9810 29730 6120 9340 15510 23550 13340 2820 1010 1040
e Estimated.
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1972 - 1997, BY WATER YEAR (WY)
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
MEAN 15.6 43.7 54.6 71.2 72.7 109 168 305 252 87.4 21.3 13.5
MAX 72.1 225 218 484 307 305 300 567 795 448 102 55.3
(WY) 1983 1984 1982 1997 1986 1986 1982 1982 1983 1995 1983 1983
MIN 2.60 7.36 8.07 8.00 10.5 21.2 64.0 55.3 23.5 4.65 1.15 1.39
(WY) 1989 1991 1991 1991 1991 1977 1977 1977 1992 1994 1994 1988
SUMMARY STATISTICS FOR 1996 CALENDAR YEAR FOR 1997 WATER YEAR WATER YEARS 1972 - 1997
ANNUAL TOTAL 56210.2 59755.4
ANNUAL MEAN 154 164 104
HIGHEST ANNUAL MEAN 203 1983
LOWEST ANNUAL MEAN 29.2 1988
HIGHEST DAILY MEAN 1430 May 16 3150 Jan 2 3150 Jan 2 1997
LOWEST DAILY MEAN 7.4 Oct 12 7.4 Oct 12 .70 Aug 22 1994
ANNUAL SEVEN-DAY MINIMUM 8.0 Oct 9 8.0 Oct 9 .70 Aug 22 1994
INSTANTANEOUS PEAK FLOW 5480 Jan 2 5480 Jan 2 1997
INSTANTANEOUS PEAK STAGE 9.95 Jan 2 9.95 Jan 2 1997
ANNUAL RUNOFF (AC-FT) 111500 118500 75210
10 PERCENT EXCEEDS 404 391 284
50 PERCENT EXCEEDS 94 101 39
90 PERCENT EXCEEDS 11 12 7.5
USGS Water Resources of California
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Last modified: Wed Mar 10 14:06:51 PST 1999
1997 California Hydrologic Data
Report
10336610 UPPER TRUCKEE RIVER AT SOUTH LAKE TAHOE, CA-Continued
WATER-QUALITY RECORDS
PERIOD OF RECORD.-Water years 1972-74, 1978, 1980 to current year.
PERIOD OF DAILY RECORD.-
SPECIFIC CONDUCTANCE: March 1981 to September 1983.
WATER TEMPERATURE: October 1971 to June 1974, October 1977 to June 1978, March 1980 to September 1992.
SUSPENDED-SEDIMENT DISCHARGE: October 1971 to June 1974, October 1977 to June 1978, March 1980 to September 1992.
REMARKS.-In October 1992, station was incorporated into the expanded Lake Tahoe Interagency Monitoring Program to monitor tributary
contributions of nutrients and sediment to Lake Tahoe. These data are reviewed and provided by the Nevada District Office, U.S. Geological
Survey.
WATER-QUALITY DATA, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997
DIS- PH BARO- OXYGEN,
CHARGE, SPE- WATER METRIC DIS-
INST. CIFIC WHOLE PRES- SOLVED
CUBIC CON- FIELD TEMPER- TEMPER- SURE OXYGEN, (PER-
FEET DUCT- (STAND- ATURE ATURE (MM DIS- CENT
DATE TIME PER ANCE ARD AIR WATER OF SOLVED SATUR-
SECOND (US/CM) UNITS) (DEG C) (DEG C) HG) (MG/L) ATION)
(00061) (00095) (00400) (00020) (00010) (00025) (00300) (00301)
OCT
01... 1030 7.3 100 7.6 14.0 11.5 605 8.8 102
NOV
05... 1240 14 90 -- 5.0 3.0 -- -- --
18... 1530 630 27 -- 7.5 4.5 -- -- --
19... 1335 287 25 -- 2.5 4.5 -- -- --
DEC
05... 1315 770 39 -- 1.5 1.0 -- -- --
09... 1430 119 57 -- 3.0 3.0 -- -- --
12... 1400 692 43 -- 4.5 2.5 -- -- --
13... 1300 323 40 -- 6.5 3.5 -- -- --
31... 1545 733 40 -- 7.0 1.5 -- -- --
JAN
01... 1700 3420 24 -- 8.5 0.5 -- -- --
02... 1640 e4500 17 -- 1.0 1.0 -- -- --
03... 1145 2210 21 -- 1.5 1.0 -- -- --
08... 1230 328 45 -- 4.0 1.0 -- -- --
MAR
13... 1310 117 63 -- 9.0 4.5 -- -- --
27... 1100 263 42 -- 12.5 4.0 -- -- --
APR
09... 1245 134 53 7.3 0.5 3.0 601 10.6 100
MAY
02... 1030 279 31 -- 12.5 4.5 -- -- --
08... 0930 408 26 7.1 11.5 4.5 607 10.6 103
15... 1510 396 26 -- 23.0 9.5 -- -- --
16... 0745 443 24 -- 8.0 5.5 -- -- --
22... 1320 298 29 -- 18.0 8.5 -- -- --
30... 1120 375 24 -- 18.5 9.5 -- -- --
JUN
06... 1400 320 27 -- 15.0 11.0 -- -- --
13... 1215 206 31 7.5 8.5 8.5 598 9.0 98
20... 1550 157 32 -- 22.0 16.0 -- -- --
27... 1315 94 44 -- 23.0 15.0 -- -- --
JUL
23... 1240 28 65 -- 20.0 17.0 -- -- --
AUG
19... 1240 15 88 -- 21.5 18.5 -- -- --
SEP
17... 1145 19 49 7.9 14.0 12.5 602 8.7 104
e Estimated.
10336610 UPPER TRUCKEE RIVER AT SOUTH LAKE TAHOE, CA-Continued
WATER-QUALITY DATA, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997
NITRO- NITRO- NITRO- PHOS- IRON, SEDI- SED.
GEN, GEN, GEN,AM- PHORUS BIO. MENT, SUSP.
NO2+NO3 AMMONIA MONIA + PHOS- ORTHO, REACT- SEDI- DIS- SIEVE
DIS- DIS- ORGANIC PHORUS DIS- IVE MENT, CHARGE, DIAM.
SOLVED SOLVED TOTAL TOTAL SOLVED TOTAL SUS- SUS- % FINER
DATE (MG/L (MG/L (MG/L (MG/L (MG/L (UG/L PENDED PENDED THAN
AS N) AS N) AS N) AS P) AS P) AS FE) (MG/L) (T/DAY) .062 MM
(00631) (00608) (00625) (00665) (00671) (46568) (80154) (80155) (70331)
OCT
01... 0.011 0.004 0.15 0.023 0.003 215 4 0.08 --
NOV
05... 0.009 0.001 0.33 0.017 0.006 372 4 0.15 --
18... 0.020 0.005 0.27 0.105 0.015 1630 83 141 --
19... 0.018 0.002 0.28 0.067 0.006 1030 49 38 --
DEC
05... 0.011 0.010 0.08 0.144 0.032 919 149 310 29
09... 0.017 0.002 0.19 0.020 0.007 278 7 2.2 --
12... 0.010 0.013 0.20 0.074 0.016 737 92 172 --
13... 0.006 0.008 0.17 0.047 0.009 767 24 21 --
31... 0.012 0.003 0.34 0.078 0.010 231 75 148 --
JAN
01... 0.012 0.007 0.40 0.230 0.024 193 195 1800 --
02... 0.005 <0.001 0.21 0.222 0.014 85 101 e1230 --
03... 0.009 <0.001 0.16 0.098 0.009 160 36 215 --
08... 0.020 <0.001 0.23 0.036 0.006 332 16 14 --
MAR
13... 0.019 <0.001 0.18 0.033 0.006 297 16 5.1 --
27... 0.040 0.002 0.10 0.035 0.014 864 40 28 --
APR
09... 0.016 0.004 0.29 0.018 0.005 272 17 6.2 --
MAY
02... 0.009 <0.001 0.21 0.018 0.004 225 8 6.0 --
08... 0.006 0.001 0.22 0.017 0.001 444 14 15 --
15... 0.006 <0.001 0.11 0.042 0.006 667 19 20 --
16... 0.003 <0.001 0.17 0.050 0.006 435 22 26 --
22... 0.040 <0.001 0.21 0.033 0.005 427 11 8.9 --
30... 0.006 <0.001 0.09 0.027 0.004 458 16 16 --
JUN
06... 0.007 <0.001 0.13 0.029 0.003 268 16 14 --
13... 0.010 <0.001 0.09 0.036 0.005 271 20 11 --
20... 0.009 0.001 0.07 0.043 0.004 270 7 3.0 --
27... 0.010 0.003 0.15 0.022 0.007 233 5 1.3 --
JUL
23... 0.017 0.003 0.07 0.036 0.008 259 2 0.15 --
AUG
19... 0.012 <0.001 0.15 0.043 0.004 409 57 2.3 --
SEP
17... 0.008 0.002 0.07 0.023 0.005 192 13 0.67 --
e Estimated.
USGS Water Resources of California
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| Geology |
Mapping | Water
Contact:
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Last modified: Wed Mar 10 14:06:52 PST 1999