11214550 COURTRIGHT RESERVOIR NEAR NELSON MOUNTAIN, CA LOCATION.--Lat 37°04'45", long 119°58'07", in NW 1/4 NW 1/4 sec.7, T.10 S., R.28 E., Fresno County, Hydrologic Unit 18030010, Sierra National Forest, at left end of dam on Helms Creek, 2.5 mi upstream from mouth, 4.6 mi east of Nelson Mountain, and 9.7 mi west of Blackcap Mountain. DRAINAGE AREA.--39.7 mi2. PERIOD OF RECORD.--October 1958 to September 1982 (monthend elevation and contents only), October 1982 to current year. GAGE.--Water-stage recorder. Datum of gage is sea level (levels by Pacific Gas & Electric Co.). REMARKS.--Reservoir is formed by rockfill dam completed in 1958. Usable capacity, 123,286 acre-ft between elevations 7,902 ft, invert of tunnel, and 8,184 ft, elevation of spillway. Dead storage negligible. Records, including extremes, represent total contents at 2400 hours. See schematic diagram of Kings River basin. COOPERATION.--Records were provided by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection with a Federal Energy Regulatory Commission project. Records not rounded to U.S. Geological Survey standards. EXTREMES FOR PERIOD OF RECORD.--Maximum contents, 124,220 acre-ft, Sept. 26, 1982, elevation, 8,184.57 ft; no contents in 1961-62, 1968, 1970. EXTREMES FOR CURRENT YEAR.--Maximum contents, 121,921 acre-ft, June 10, elevation, 8,183.16 ft; minimum, 53,587 acre-ft, Dec. 15, elevation, 8,128.52 ft. Capacity table (elevation, in feet, and contents, in acre-feet) (Based on table provided by Pacific Gas & Electric Co., dated Apr. 13, 1959) 7,902 0 7,970 736 8,035 6,269 8,115 42,141 7,950 267 7,990 1,617 8,060 12,298 8,150 75,878 7,960 462 8,010 3,129 8,085 22,584 8,184 123,286 RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996 DAILY OBSERVATION AT 2400 HOURS DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 86987 57411 58165 69757 59359 61567 72493 68882 117964 120822 100421 80350 2 83432 56855 59064 71027 59636 63219 72560 70021 121226 119172 100806 82762 3 80653 56845 60082 71305 60003 62256 73171 73023 120485 118107 101677 84057 4 79397 56826 59854 71618 61860 62900 73443 77257 120405 118949 103451 83994 5 78667 56798 57671 72088 63528 61073 73967 82750 120421 118981 105028 84082 6 78619 56769 57478 72088 65456 61223 73864 83944 117663 117347 106770 83258 7 78393 56769 56058 71920 64753 62440 73967 84647 120051 119507 108323 81641 8 78536 56655 57584 70783 61223 64732 73978 84886 121016 118774 107723 78274 9 74344 57046 57932 69955 60611 68501 73864 85798 120967 117458 107619 73171 10 68980 57027 56731 69691 62675 70021 73590 88707 121921 117316 105101 71852 11 69603 57008 57633 69154 67315 70550 74104 88265 120051 116560 104559 71472 12 69319 58342 59182 66333 68469 70375 74448 85748 120517 116905 99755 70429 13 67723 59074 57209 65277 66897 70971 74264 81592 120887 116623 93847 70462 14 66567 59379 53917 65319 61153 67670 74093 83857 120405 118678 89400 70436 15 65793 59359 53587 63301 54748 65413 71305 88903 120517 118043 86820 70372 16 66450 59339 54083 62369 54970 64994 72673 96127 120485 117996 83146 69933 17 65078 59319 54729 62993 58359 64805 74919 103002 120469 118218 82874 69340 18 62358 59300 55008 61375 59359 62931 75473 113860 120517 117837 85253 68980 19 60311 59270 55278 62655 61962 62563 77081 117189 120469 115525 86525 68860 20 60501 59250 57104 63796 62787 61952 79349 117142 120180 110407 86845 64128 21 61173 59221 57517 65435 63610 61597 81360 115447 119347 110483 86218 63065 22 63869 59201 58029 64586 59636 64784 79229 113751 119124 108203 84886 65456 23 64107 59182 59379 60631 60231 67251 76577 110225 118949 107828 81556 64952 24 63734 59162 59458 59953 63147 68871 74150 104325 120340 108188 81727 64920 25 63807 59136 60182 60341 64994 70010 71517 104602 120437 104896 83669 65848 26 63590 58720 61860 60251 63765 68534 69450 105970 120164 106651 84383 65761 27 63734 58554 62675 63321 62206 68828 69900 107022 118981 106978 84446 65424 28 61365 58476 63106 65245 61809 68296 71372 106414 120308 105072 84221 65392 29 59399 58975 63590 65572 61962 68882 71060 109347 120935 105395 81531 62777 30 58242 58340 65793 62655 --- 71573 68317 111796 121322 102886 79289 60461 31 58058 --- 68177 60661 --- 72786 --- 114979 --- 100592 78524 --- MAX 86987 59379 68177 72088 68469 72786 81360 117189 121921 120822 108323 84082 MIN 58058 56655 53587 59953 54748 61073 68317 68882 117663 100592 78524 60461 a 8133.27 8133.56 8143.13 8135.91 8137.20 8147.30 8143.26 8178.79 8182.79 8169.15 8152.25 8135.71 b -30480 +282 +9837 -7516 +1301 +10824 -4469 +46662 +6343 -20730 -22068 -18063 CAL YR 1995 b +3905 WTR YR 1996 b -28077 a Elevation, in feet, at end of month. b Change in contents, in acre-feet.
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