10287289 RUSH CREEK FLUME BELOW AGNEW LAKE, NEAR JUNE LAKE, CA
LOCATION.-Lat 37°45'33", long 119°07'47", in NE 1/4 SW 1/4 sec.20, T.2 S., R.26 E., Mono County, Hydrologic Unit 18090101, Inyo National
Forest, on left bank 600 ft downstream from Agnew Lake Dam, and 3.4 mi southwest of town of June Lake.
DRAINAGE AREA.-23.3 mi2.
PERIOD OF RECORD.-October 1990 to current year. If records for Rush Creek Powerplant Tailrace (station 10287300) are combined with this
record, a record equivalent to that published since October 1951 as Rush Creek below Agnew Lake (station 10287290) can be obtained.
Monthly and yearly mean discharges prior to October 1969, published in WSP 2127.
GAGE.-Water-stage recorder and Parshall flume. A 4-ft Cipolletti weir is set in the Parshall flume at times. Elevation of gage is 8,440 ft above
sea level, from topographic map.
REMARKS.-Flow regulated for power development by Waugh, Gem, and Agnew Lakes (stations 10287260, 10287280, and 10287285). Most of
the water is diverted at either Gem or Agnew Lakes to Rush Creek Powerplant Tailrace via Rush Creek Powerplant.
COOPERATION.-Records 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, 441 ft3/s, July 30, 1995, gage height, 4.90 ft; no flow for many days in most
years.
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 e.59 6.9 .64 12 1.1 .93 2.7 2.4 15 2.8 e2.1 e2.2
2 e.54 2.0 .56 11 1.8 .87 2.2 2.4 14 2.5 e2.1 e2.2
3 e.54 1.3 .55 10 2.3 .91 1.8 2.4 12 2.2 e2.1 e2.2
4 e.63 .98 .56 10 2.4 .84 1.8 2.5 12 2.8 e2.2 e2.1
5 e.63 .85 .75 10 1.6 .81 1.6 2.5 10 3.5 e2.2 e1.9
6 e.62 .84 .26 10 3.0 .79 1.6 1.7 9.2 2.4 e2.2 e1.9
7 e.54 .84 .67 9.9 1.9 .82 1.6 1.1 11 2.8 e2.2 e1.9
8 e.30 .80 1.0 9.8 1.7 .84 1.5 1.1 9.4 2.9 e2.2 e1.9
9 e.30 .86 1.1 9.5 5.2 .85 1.4 1.1 10 3.4 e2.4 e1.9
10 e.31 .85 .93 9.3 1.1 .94 1.4 1.1 9.9 3.9 e2.2 e1.9
11 e.32 .71 2.1 6.7 1.9 1.1 1.6 1.2 9.6 2.8 e2.2 e1.9
12 e.33 .68 1.9 3.4 1.0 1.2 1.5 1.2 11 5.3 e2.2 e1.9
13 e.34 .62 1.3 2.7 1.8 1.3 1.5 1.2 6.1 6.0 e2.2 e1.9
14 e.34 .59 1.0 2.1 1.2 1.4 1.4 1.2 9.9 6.1 e2.2 e2.0
15 e.35 .48 1.3 1.9 1.1 1.5 1.5 1.2 8.0 8.7 e2.2 e2.0
16 e.32 .61 .77 1.6 .95 1.6 2.0 1.2 8.0 11 e2.2 e1.9
17 e.35 2.0 .75 1.5 1.0 1.6 2.3 1.2 9.8 8.4 e2.2 e1.9
18 e.34 2.7 .74 1.4 1.1 1.7 2.3 1.2 10 e2.9 e2.2 e1.8
19 e.35 1.6 .69 1.3 .95 1.7 2.4 1.3 11 e2.2 e2.2 e1.6
20 e.36 1.3 .65 1.8 .92 1.9 2.4 1.2 11 e2.3 e2.2 e1.6
21 e.37 1.3 4.2 1.2 .92 2.1 2.5 1.3 9.5 e2.3 e2.2 e1.6
22 e.36 2.3 3.7 2.5 1.0 2.1 2.5 1.3 8.0 e2.0 e2.2 e1.6
23 e.37 1.8 1.5 2.7 1.4 2.0 2.4 1.3 6.5 e2.2 e2.2 e1.6
24 5.4 1.4 .96 2.0 3.7 2.0 2.3 1.3 6.2 e2.2 e2.2 e1.6
25 10 1.2 .81 2.7 .89 2.2 2.3 1.3 6.1 e1.9 e2.2 e1.6
26 9.5 1.0 1.1 2.6 .86 2.5 2.3 1.3 6.2 e1.9 e2.2 e1.6
27 9.3 .87 1.3 2.0 .91 2.8 2.3 1.3 5.7 e2.0 e2.2 e1.6
28 9.5 .75 .90 1.5 .92 2.9 2.4 1.3 3.2 e2.2 e2.2 e1.6
29 9.9 .72 1.3 1.2 --- 3.1 2.4 1.4 4.4 e2.0 e2.2 e1.6
30 9.9 .69 1.2 1.1 --- 3.3 2.4 23 5.6 e2.1 e2.2 e1.6
31 9.9 --- 3.6 1.0 --- 3.5 --- 18 --- e2.3 e2.2 ---
TOTAL 82.90 39.54 38.79 146.4 44.62 52.10 60.3 83.2 268.3 108.0 68.1 54.6
MEAN 2.67 1.32 1.25 4.72 1.59 1.68 2.01 2.68 8.94 3.48 2.20 1.82
MAX 10 6.9 4.2 12 5.2 3.5 2.7 23 15 11 2.4 2.2
MIN .30 .48 .26 1.0 .86 .79 1.4 1.1 3.2 1.9 2.1 1.6
AC-FT 164 78 77 290 89 103 120 165 532 214 135 108
a 4720 2820 2570 4870 3660 2780 2600 4670 4540 5590 5900 5250
e Estimated.
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1991 - 1997, BY WATER YEAR (WY)
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
MEAN 1.80 1.45 .76 1.15 .76 .78 1.37 .73 19.3 42.5 13.7 .70
MAX 3.06 3.67 1.37 4.72 1.59 1.68 2.99 2.68 81.8 218 89.8 1.82
(WY) 1996 1996 1995 1997 1997 1997 1996 1997 1995 1995 1995 1997
MIN .085 .39 .23 .27 .19 .13 .040 .045 .049 .031 .005 .015
(WY) 1995 1994 1991 1991 1991 1995 1994 1994 1992 1994 1994 1994
SUMMARY STATISTICS FOR 1996 CALENDAR YEAR FOR 1997 WATER YEAR WATER YEARS 1991 - 1997
ANNUAL TOTAL 1620.49 1046.85
ANNUAL MEAN 4.43 2.87 7.14
HIGHEST ANNUAL MEAN 33.6 1995
LOWEST ANNUAL MEAN .41 1994
HIGHEST DAILY MEAN 160 Jun 22 23 May 30 397 Jul 30 1995
LOWEST DAILY MEAN .06 May 21 .26 Dec 6 .00 Oct 27 1990
ANNUAL SEVEN-DAY MINIMUM .08 May 21 .32 Oct 8 .00 Mar 12 1991
INSTANTANEOUS PEAK FLOW 70 May 30 441 Jul 30 1995
INSTANTANEOUS PEAK STAGE 4.36 May 30 4.90 Jul 30 1995
ANNUAL RUNOFF (AC-FT) 3210 2080 5170
ANNUAL DIVERSION (AC-FT) a 45280 49980
10 PERCENT EXCEEDS 5.3 9.3 4.2
50 PERCENT EXCEEDS .96 1.9 .55
90 PERCENT EXCEEDS .31 .69 .05
a Diversion, in acre-feet, to Rush Creek Powerplant Tailrace, provided by Southern California Edison Co.
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Last modified: Wed Mar 10 14:06:39 PST 1999