11242000 SAN JOAQUIN RIVER ABOVE WILLOW CREEK, NEAR AUBERRY, CA
LOCATION.--Lat 37°08'40", long 119°27'13", in SW 1/4 SW 1/4 sec.15, T.9 S., R.23 E., Madera County, Hydrologic
Unit 18040006, Sierra National Forest, on right bank 1,000 ft downstream from Redinger Lake Dam, 0.4 mi
upstream from Willow Creek, and 4.2 mi northeast of Auberry.
DRAINAGE AREA.--1,295 mi2.
PERIOD OF RECORD.--March 1951 to current year.
REVISED RECORDS.--WSP 1930: Drainage area.
GAGE.--Water-stage recorder. Datum of gage is 1,175.54 ft above sea level (levels by Southern California Edison
Co.).
REMARKS.--Flow regulated by Redinger Lake (station 11241950). Most of the flow, since June 1951, is diverted at
Redinger Lake to Big Creek No. 4 Powerplant (station 11246530). See schematic diagram of lower San Joaquin
River basin.
COOPERATION.--Records were collected by Southern California Edison Co., under general supervision of the
U.S. Geological Survey, in connection with a Federal Energy Regulatory Commission project.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 73,200 ft3/s, Dec. 23, 1955, gage height, 54.2 ft, from
floodmarks, from rating curve extended above 7,000 ft3/s on basis of computed flow over dam; no flow
Sept. 25, 1951.
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 20 24 22 23 14 322 38 651 1440 42 19 23
2 20 26 22 23 13 320 454 715 2410 42 24 23
3 20 27 22 23 13 321 180 686 3030 382 23 23
4 20 22 20 23 14 317 174 376 3070 1940 23 23
5 20 22 22 23 14 917 175 241 3640 229 24 41
6 19 22 22 25 14 579 174 33 3280 41 24 46
7 19 22 22 25 13 300 174 29 5040 41 24 24
8 19 22 22 23 13 271 166 310 5430 43 23 24
9 18 22 22 23 13 255 170 2460 5420 250 23 24
10 18 22 22 23 13 253 639 2250 4380 442 23 24
11 24 22 22 23 13 830 538 3580 3280 751 23 24
12 24 22 22 23 13 671 361 3760 2130 367 23 24
13 24 22 22 23 13 585 21 3870 2170 100 23 24
14 23 22 22 23 13 708 9.5 4830 2280 284 23 24
15 23 22 22 23 13 568 34 e4400 1240 149 23 23
16 24 22 22 23 13 27 335 e20800 1660 48 23 23
17 24 22 22 23 13 23 865 7140 1640 48 23 23
18 24 22 22 23 13 564 859 4990 1690 48 23 23
19 24 22 22 23 319 633 852 3870 1550 48 23 22
20 24 22 22 23 1990 627 506 2190 1630 48 23 22
21 24 22 22 23 22 640 428 2490 1900 48 23 22
22 24 22 22 23 22 645 428 2350 1700 48 21 22
23 25 22 22 23 22 321 428 1690 1130 48 23 22
24 25 22 22 23 22 316 425 1550 1010 47 23 22
25 25 22 22 23 85 312 425 553 561 44 23 22
26 30 22 22 23 434 308 419 2010 216 46 23 22
27 34 22 22 22 700 153 433 1520 41 46 23 22
28 35 22 22 21 347 134 531 1800 42 46 23 22
29 35 22 22 16 326 11 476 1020 42 41 23 22
30 26 22 23 13 --- 437 449 956 42 32 23 21
31 24 --- 23 14 --- 176 --- 1120 --- 32 23 ---
TOTAL 738 671 682 688 4527 12544 11166.5 84240 63094 5821 711 726
MEAN 23.8 22.4 22.0 22.2 156 405 372 2717 2103 188 22.9 24.2
MAX 35 27 23 25 1990 917 865 20800 5430 1940 24 46
MIN 18 22 20 13 13 11 9.5 29 41 32 19 21
AC-FT 1460 1330 1350 1360 8980 24880 22150 167100 125100 11550 1410 1440
a 104400 64720 75910 88710 135500 223200 216000 222600 211400 184700 134700 122800
e Estimated.
a Diversion, in acre-feet, to Big Creek No. 4 Powerplant, provided by Southern California Edison Co.
11242000 SAN JOAQUIN RIVER ABOVE WILLOW CREEK, NEAR AUBERRY, CA--Continued
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1951 - 1996, BY WATER YEAR (WY)
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
MEAN 20.1 20.2 111 80.5 115 156 422 1675 2195 854 75.2 21.2
MAX 25.9 76.2 3501 679 1255 1456 2739 10410 12700 7739 1343 33.9
(WY) 1990 1983 1956 1980 1986 1983 1951 1969 1983 1995 1983 1952
MIN 8.15 8.55 5.66 3.83 3.37 2.86 3.27 4.76 8.59 13.3 16.5 2.79
(WY) 1983 1985 1966 1965 1966 1968 1955 1971 1971 1979 1984 1951
SUMMARY STATISTICS FOR 1995 CALENDAR YEAR FOR 1996 WATER YEAR WATER YEARS 1951 - 1996
ANNUAL TOTAL 756993.1 185608.5
ANNUAL MEAN 2074 507 473
HIGHEST ANNUAL MEAN 2409 1983
LOWEST ANNUAL MEAN 11.4 1966
HIGHEST DAILY MEAN 14800 Apr 30 20800 May 16 47700 Dec 23 1955
LOWEST DAILY MEAN 4.4 Mar 4 9.5 Apr 14 .00 Sep 25 1951
ANNUAL SEVEN-DAY MINIMUM 4.9 Mar 2 13 Feb 7 .38 Oct 17 1982
INSTANTANEOUS PEAK FLOW 33600 May 16 73200 Dec 23 1955
INSTANTANEOUS PEAK STAGE 35.50 May 16 54.20 Dec 23 1955
ANNUAL RUNOFF (AC-FT) 1501000 368200 342700
TOTAL DIVERSION (AC-FT) a 1853000 1785000
10 PERCENT EXCEEDS 7280 1650 1130
50 PERCENT EXCEEDS 35 24 20
90 PERCENT EXCEEDS 19 21 4.9
a Diversion, in acre-feet, to Big Creek No. 4 Powerplant, provided by Southern California Edison Co.
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