10344400 LITTLE TRUCKEE RIVER ABOVE BOCA RESERVOIR, NEAR TRUCKEE, CA
LOCATION.--Lat 39°26'09", long 120°05'00", in SW 1/4 SW 1/4 sec.3, T.18 N., R.17 E., Nevada County, Hydrologic
Unit 16050102, on left bank 1 mi upstream from Boca Reservoir, 1.5 mi upstream from Dry Creek, 3.0 mi
downstream from Stampede Dam, and 5.5 mi northeast of Truckee.
DRAINAGE AREA.--146 mi2.
PERIOD OF RECORD.--June 1903 to October 1910, September 1939 to current year. Monthly discharge only for some
periods, published in WSP 1314 and 1734. Published as "at Pine Station," June 1903 to December 1907, as "at
Starr," January 1908 to October 1910, and as "near Boca," September 1939 to September 1976.
REVISED RECORDS.--WSP 1564: 1903-4, 1906-7, 1910, drainage area at site used in 1903-7.
GAGE.--Water-stage recorder and concrete control. Datum of gage is 5,618.67 ft above sea level (U.S. Bureau of
Reclamation Benchmark). June 1903 to October 1910, nonrecording gages at different sites and datums.
REMARKS.--Records excellent except for estimated daily discharges, which are fair. Flow regulated by
Independence Lake (station 10342900) since 1939 and Stampede Reservoir (station 10344300) since 1969. There
is one transbasin diversion to Sierra Valley. See schematic diagram of Truckee River basin.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 13,300 ft3/s, Feb. 1, 1963, gage height, 9.00 ft, from rating
curve extended above 1,600 ft3/s on basis of slope-area measurement of peak flow; minimum daily, 0.30 ft3/s,
Sept. 16-21, 1969.
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 33 33 33 e44 e140 273 407 391 556 226 223 31
2 33 33 33 e44 105 285 516 391 548 210 172 31
3 33 33 33 44 78 288 597 390 544 212 69 31
4 33 33 33 e77 102 380 597 388 543 211 38 31
5 33 33 33 e111 147 445 597 387 526 212 37 31
6 32 34 33 e130 284 348 597 387 545 211 37 31
7 32 34 33 e130 542 262 598 387 543 211 35 31
8 32 34 33 e96 676 264 599 387 538 346 33 31
9 32 34 33 75 661 264 601 387 532 620 32 31
10 32 34 33 74 676 269 542 385 521 701 32 31
11 32 34 35 73 676 347 388 386 508 705 32 30
12 32 34 e197 74 485 403 302 386 495 710 32 e76
13 32 34 e318 74 344 398 298 387 487 701 33 e174
14 32 34 e146 74 344 360 295 387 474 701 33 e242
15 32 34 e150 74 343 332 295 389 459 507 32 e140
16 32 34 e150 76 374 337 310 451 444 323 32 e44
17 32 35 e150 e117 402 338 303 536 427 286 32 34
18 33 34 e117 e140 402 443 303 655 409 285 32 33
19 33 34 e100 e184 415 524 296 722 494 249 31 32
20 33 37 e58 e210 605 583 294 749 717 224 31 32
21 33 33 32 e194 795 683 295 754 774 224 31 32
22 33 33 31 e166 797 723 295 761 741 223 31 31
23 33 34 31 e140 517 711 268 774 713 227 32 31
24 33 33 31 e140 290 707 251 679 755 226 32 31
25 33 33 30 e140 288 551 251 613 788 225 32 31
26 33 34 30 e140 285 382 331 615 495 225 32 31
27 33 33 32 e112 285 339 393 710 231 225 31 31
28 33 33 e44 e140 271 468 392 806 228 226 31 31
29 33 33 e44 e140 258 461 391 795 226 226 31 31
30 33 33 e44 e140 --- 398 391 664 226 225 31 31
31 34 --- e44 e140 --- 399 --- 564 --- 224 31 ---
TOTAL 1012 1011 2144 3513 11587 12965 11993 16663 15487 10327 1373 1458
MEAN 32.6 33.7 69.2 113 400 418 400 538 516 333 44.3 48.6
MAX 34 37 318 210 797 723 601 806 788 710 223 242
MIN 32 33 30 44 78 262 251 385 226 210 31 30
AC-FT 2010 2010 4250 6970 22980 25720 23790 33050 30720 20480 2720 2890
e Estimated.
10344400 LITTLE TRUCKEE RIVER ABOVE BOCA RESERVOIR, NEAR TRUCKEE, CA--Continued
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1939 - 1968, BY WATER YEAR (WY)
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
MEAN 76.0 83.5 123 87.3 131 170 399 543 310 78.1 29.8 25.8
MAX 394 630 725 264 835 374 855 1304 1045 433 180 76.5
(WY) 1963 1951 1965 1956 1963 1967 1952 1952 1967 1967 1940 1959
MIN 13.5 13.0 11.6 9.45 22.0 39.0 106 171 45.7 6.06 4.45 5.93
(WY) 1962 1940 1960 1962 1948 1948 1961 1961 1954 1949 1949 1948
SUMMARY STATISTICS WATER YEARS 1939 - 1968
ANNUAL MEAN 170
HIGHEST ANNUAL MEAN 321 1952
LOWEST ANNUAL MEAN 58.9 1961
HIGHEST DAILY MEAN 8810 Feb 1 1963
LOWEST DAILY MEAN 3.0 Nov 30 1954
ANNUAL SEVEN-DAY MINIMUM 4.0 Jul 17 1949
INSTANTANEOUS PEAK FLOW 13300 Feb 1 1963
INSTANTANEOUS PEAK STAGE 9.00 Feb 1 1963
ANNUAL RUNOFF (AC-FT) 123200
10 PERCENT EXCEEDS 454
50 PERCENT EXCEEDS 70
90 PERCENT EXCEEDS 13
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1969 - 1996, BY WATER YEAR (WY)
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
MEAN 79.0 43.0 69.6 76.4 76.1 133 300 553 343 169 116 55.8
MAX 503 132 711 349 400 418 923 1371 1733 1301 573 359
(WY) 1974 1975 1984 1984 1996 1996 1986 1969 1983 1983 1975 1971
MIN .56 .75 2.85 16.7 10.6 13.8 25.6 30.6 28.1 24.1 1.65 .47
(WY) 1970 1970 1970 1980 1970 1970 1970 1988 1988 1981 1969 1969
SUMMARY STATISTICS FOR 1995 CALENDAR YEAR FOR 1996 WATER YEAR WATER YEARS 1969 - 1996
ANNUAL TOTAL 61453 89533
ANNUAL MEAN 168 245 168
HIGHEST ANNUAL MEAN 427 1983
LOWEST ANNUAL MEAN 53.4 1992
HIGHEST DAILY MEAN 825 Jul 29 806 May 28 2460 Jun 9 1982
LOWEST DAILY MEAN 27 Jan 1 30 Dec 25 .30 Sep 16 1969
ANNUAL SEVEN-DAY MINIMUM 27 Jan 1 31 Sep 5 .31 Sep 15 1969
INSTANTANEOUS PEAK FLOW 825 May 27 13300 Feb 1 1963
INSTANTANEOUS PEAK STAGE 2.46 May 27 9.00 Feb 1 1963
ANNUAL RUNOFF (AC-FT) 121900 177600 122000
10 PERCENT EXCEEDS 544 602 472
50 PERCENT EXCEEDS 45 189 44
90 PERCENT EXCEEDS 32 32 27
USGS Water Resources of California
Search |
USGS Headquarters |
Biology |
Geology |
Mapping |
Water