USGS
Water Resources Data - California, Water Year 1994
11362900 NELSON CREEK BELOW DIVERSION TO NELSON CREEK POWERPLANT, NEAR BIG BEND, CA
LOCATION.--Lat 41`02'32", long 121`52'34", in NE 1/4 NE 1/4 sec.29, T.37 N., R.1 E., Shasta County, Hydrologic
Unit 18020003, on right bank 400 ft upstream from Snowslide Creek, 0.3 mi downstream from Bull Creek, and
2.3 mi northeast of Big Bend.
DRAINAGE AREA.--13.2 mi2.
PERIOD OF RECORD.--October 1993 to September 1994.
GAGE.--Water-stage recorder and broad-crested weir; water-stage recorder and sharp-crested weir. Elevation of
gages is 2,320 ft above sea level, from topographic map.
REMARKS.--Records fair. Flow at this station has two components which are combined for publication: flow over a
broad-crested weir (station 11362880) and flow over a sharp-crested weir (station 11362890). Water is
diverted upstream of weirs through a tunnel to Nelson Creek Powerplant (station 11362800), returning to Nelson
Creek at its confluence with the Pit River. See schematic diagram of Pit and McCloud River basins.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 185 ft3/s, Dec. 8, 1993; minimum daily, 7.4 ft3/s, Sept. 8,
21, 22, 1994.
EXTREMES FOR CURRENT YEAR.--Maximum discharge, 185 ft3/s, Dec. 8; minimum daily, 7.4 ft3/s, Sept. 8, 21, 22.
DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1993 TO SEPTEMBER 1994
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 13 e11 e12 15 15 17 16 16 18 11 8.6 7.9
2 13 e11 e12 15 14 16 16 16 17 11 8.6 8.0
3 13 e12 e12 15 14 15 16 16 19 11 8.5 8.0
4 13 e12 12 16 14 15 16 17 19 11 8.4 8.0
5 13 e12 12 16 14 15 16 17 19 11 8.4 7.9
6 13 e12 12 18 16 15 16 17 19 11 8.4 7.9
7 13 e11 20 16 19 15 17 17 17 11 8.4 7.8
8 13 e11 63 16 16 15 16 17 17 10 8.3 7.4
9 13 e11 16 16 16 16 16 17 16 9.9 8.3 7.7
10 14 e11 16 16 16 e15 16 17 15 9.9 8.3 7.8
11 15 e12 19 15 16 e15 16 17 15 9.8 8.3 8.0
12 15 e17 15 15 18 e15 16 17 15 9.7 8.2 e7.9
13 15 e12 18 15 19 e16 17 17 15 9.5 8.2 7.8
14 16 e12 18 15 18 e16 16 17 14 9.5 8.2 7.7
15 17 e12 17 15 17 15 17 17 14 9.4 8.1 7.7
16 16 e12 19 14 17 16 16 17 14 9.4 8.1 7.6
17 16 e12 16 14 19 16 17 17 14 9.3 8.0 7.6
18 15 e11 16 14 16 16 17 17 13 9.2 8.1 7.6
19 14 e11 15 14 15 16 17 19 13 9.2 8.1 7.5
20 14 e11 15 14 15 16 17 17 13 9.1 8.1 7.5
21 14 e11 15 14 16 16 17 17 13 9.1 8.1 7.4
22 14 e12 14 14 16 16 18 17 13 9.1 8.1 7.4
23 13 e11 14 17 16 16 20 17 13 9.1 8.0 7.5
24 13 e11 14 17 16 16 18 17 12 9.0 8.0 7.8
25 12 e11 14 16 16 16 17 17 12 8.9 8.0 7.7
26 12 e11 13 16 16 16 17 17 12 8.8 8.0 7.6
27 12 e11 13 18 20 16 17 17 12 8.8 8.0 7.5
28 e12 e11 13 18 16 16 17 17 12 8.8 8.0 e15
29 e12 e17 13 16 --- 16 17 17 12 8.7 7.9 e9.7
30 e12 e14 14 16 --- 16 17 17 11 8.6 7.9 e8.7
31 e12 --- 14 15 --- 15 --- 18 --- 8.6 7.9 ---
TOTAL 422 356 506 481 456 486 502 527 438 298.4 253.5 241.6
MEAN 13.6 11.9 16.3 15.5 16.3 15.7 16.7 17.0 14.6 9.63 8.18 8.05
MAX 17 17 63 18 20 17 20 19 19 11 8.6 15
MIN 12 11 12 14 14 15 16 16 11 8.6 7.9 7.4
AC-FT 837 706 1000 954 904 964 996 1050 869 592 503 479
a 19 8.7 160 44 243 1070 219 413 5.4 0 0 .4
e Estimated.
a Discharge, in acre-feet, for Nelson Creek Powerplant (station 11362800), provided by Sierra Pacific
Industries.
11362900 NELSON CREEK BELOW DIVERSION TO NELSON CREEK POWERPLANT NEAR BIG BEND, CA--Continued
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1994 - 1994, BY WATER YEAR (WY)
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
MEAN 13.6 11.9 16.3 15.5 16.3 15.7 16.7 17.0 14.6 9.63 8.18 8.05
MAX 13.6 11.9 16.3 15.5 16.3 15.7 16.7 17.0 14.6 9.63 8.18 8.05
(WY) 1994 1994 1994 1994 1994 1994 1994 1994 1994 1994 1994 1994
MIN 13.6 11.9 16.3 15.5 16.3 15.7 16.7 17.0 14.6 9.63 8.18 8.05
(WY) 1994 1994 1994 1994 1994 1994 1994 1994 1994 1994 1994 1994
SUMMARY STATISTICS FOR 1994 WATER YEAR
ANNUAL TOTAL 4967.5
ANNUAL MEAN 13.6
HIGHEST DAILY MEAN 63 Dec 8
LOWEST DAILY MEAN 7.4 Sep 8
ANNUAL SEVEN-DAY MINIMUM 7.5 Sep 17
INSTANTANEOUS PEAK FLOW 185 Dec 8
ANNUAL RUNOFF (AC-FT) 9850
10 PERCENT EXCEEDS 17
50 PERCENT EXCEEDS 14
90 PERCENT EXCEEDS 8.0
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