10287280 GEM LAKE NEAR JUNE LAKE, CA
LOCATION.-Lat 37°45'07", long 119°08'25", unsurveyed, T.2 S., R.26 E., Mono County, Hydrologic Unit 18090101, Inyo National Forest, in valve house 100
ft downstream from left abutment of dam on Rush Creek and 4.0 mi southwest of town of June Lake.
DRAINAGE AREA.-22.0 mi2.
PERIOD OF RECORD.-October 1990 to current year. Unpublished records prior to October 1990 available in files of Southern California Edison Co.
GAGE.-Water-stage recorder. Datum of gage is sea level (levels by Southern California Edison Co.).
REMARKS.-Reservoir is formed on natural lake by concrete dam completed in 1916. Usable capacity, 17,798 acre-ft between elevations 8,964.33 ft, invert of
outlet, and 9,053.64 ft, crest of upper spillway. Figures given represent usable contents. Water is used for power development downstream.
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. Contents not rounded to U.S. Geological Survey standards.
EXTREMES FOR PERIOD OF RECORD.-Maximum contents, 17,553 acre-ft, July 29, 1995, elevation, 9,052.78 ft; minimum, 868 acre-ft, Apr. 22, 1996, elevation, 8,982.40
ft.
EXTREMES FOR CURRENT YEAR.-Maximum contents, 17,491 acre-ft, July 20, elevation, 9,052.56 ft; minimum, 1,186 acre-ft, May 14, elevation, 8,984.13 ft.
Capacity table (elevation, in feet, and contents, in acre-feet)
(Based on survey by Southern California Edison Co., dated Sept. 1, 1981)
8,980 441 9,010 6,547
8,985 1,348 9,025 10,121
8,990 2,300 9,040 14,023
9,000 4,345 9,055 18,187
RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998
DAILY OBSERVATION AT 2400 HOURS
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 13475 10056 7738 6469 5307 4687 2639 1699 1942 10962 16699 16013
2 13333 9969 7686 6444 5333 4656 2566 1716 2106 11640 16769 15921
3 13192 9879 7623 6410 5327 4624 2509 1687 2246 12285 16853 15833
4 13049 9792 7569 6361 5292 4581 2446 1651 2272 12862 16937 15741
5 12893 9735 7560 6318 5259 4530 2376 1618 2376 13432 17030 15695
6 12745 9658 e7518 6270 5274 4461 2309 1548 2582 14036 17157 15695
7 12590 9574 e7479 6228 5270 4379 2236 1401 2794 14524 17270 15695
8 12425 9478 e7441 6179 5255 4293 2168 1291 3009 15017 17346 15695
9 12293 9397 7423 6141 5224 4203 2098 1224 3249 15562 17357 15695
10 12141 9317 7383 6098 5202 4125 2031 1213 3498 15916 17340 15695
11 11990 9234 7346 6064 5174 4039 1958 1206 3726 16102 17329 16104
12 11850 9148 7299 6031 5156 3959 1883 1204 3974 16255 17355 16307
13 11707 9061 7246 5986 5136 3877 1812 1206 4201 16427 17372 16497
14 11629 8984 7206 5956 5145 3797 1735 1186 4517 16578 17360 16707
15 11529 8894 7186 5925 5108 3709 1654 1208 4832 16682 17346 16791
16 11462 8807 7163 5898 5079 3631 1570 1250 5105 16847 17338 16738
17 11400 8723 7121 5849 5053 3551 1481 1250 5338 17106 17326 16615
18 11331 8636 7082 5840 5018 3472 1500 1250 5583 17340 17239 16461
19 11259 8564 7041 5800 4998 3393 1500 1274 5840 17443 17157 16313
20 11182 8473 6999 5762 4959 3314 1506 1304 6116 17491 17075 16213
21 11123 8394 6955 5723 4950 3237 1512 1342 6415 17482 16996 16149
22 11054 8318 6923 5683 4918 3172 1546 1388 6717 17445 16901 16015
23 10980 8225 6873 5648 4907 3110 1579 1477 7006 17391 16814 15885
24 10911 8141 6829 5605 4875 3090 1632 1592 7369 17349 16718 15758
25 10842 8068 6786 5572 4836 3046 1662 1774 7728 17284 16618 15623
26 10771 8089 6740 5530 4798 2979 1662 1825 8044 17168 16528 15499
27 10703 8000 6694 5487 4759 2938 1641 1816 8385 17016 16475 15373
28 10627 7931 6653 5443 4730 2879 1635 1896 8986 16862 16369 15241
29 10488 7865 6604 5426 --- 2816 1689 1889 9678 16699 16282 15123
30 10324 7799 6556 5382 --- 2758 1670 1833 10327 16592 16193 14989
31 10151 --- 6515 5340 --- 2694 --- 1842 --- 16648 16110 ---
MAX 13475 10056 7738 6469 5333 4687 2639 1896 10327 17491 17372 16791
MIN 10151 7799 6515 5340 4730 2694 1481 1186 1942 10962 16110 14989
a 9025.12 9015.42 9009.86 9004.60 9001.80 8992.00 8986.72 8987.63 9025.82 9049.57 9047.64 9043.57
b -3420 -2352 -1284 -1175 -610 -2036 -1024 +172 +8485 +6321 -538 -1121
CAL YR 1997 MAX 17309 MIN 1253 b +666
WTR YR 1998 MAX 17491 MIN 1186 b +1418
e Estimated.
a Elevation, in feet, at end of month.
b Change in contents, in acre feet.
USGS Water Resources of California
Contact:
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Last modified: Wed Aug 4 09:40:26 PDT 1999