11414140 LAKE SPAULDING NEAR EMIGRANT GAP, CA
LOCATION.-Lat 39°19'35", long 120°38'32", in SE 1/4 NE 1/4 sec.20, T.17 N., R.12 E., Nevada County,
Hydrologic Unit 18020125, near center of Spaulding Dam, on South Yuba River, and 2.5 mi northeast of Emigrant
Gap.
DRAINAGE AREA.-118 mi2.
PERIOD OF RECORD.-October 1964 to current year.
GAGE.-Water-stage recorder. Datum of gage is 4,809.6 ft above sea level (levels by Pacific Gas & Electric Co.).
Prior to July 1968, nonrecording gage at same site and datum.
REMARKS.-Lake is formed by three concrete-arch dams with spillway on the middle arch. Storage began in 1913.
Capacity, 74,773 acre-ft between gage heights 0.6 ft, bottom of outlet, and 205.0 ft, top of radial gates.
Released water flows through Spaulding Powerplants Nos. 1 and 2 (stations 11414154 and 11414155). Flow through
Powerplant No. 1 is transported out of Yuba River Basin by Drum Canal to Bear River Basin. See schematic diagrams
of Yuba and Bear River Basins.
COOPERATION.-Records were collected by Pacific Gas & Electric 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, 75,100 acre-ft, July 13, 1967, gage height, 205.5 ft; minimum,
914 acre-ft, Feb. 28, 1976, gage height, 25.5 ft.
EXTREMES FOR CURRENT YEAR.-Maximum contents, 74,836 acre-ft, June 22, gage height, 205.09 ft; minimum, 8,648
acre-ft, Apr. 13, gage height, 66.61 ft.
Capacity table (gage height, in feet, and contents, in acre-feet)
(Based on survey by Pacific Gas & Electric Co., dated Apr. 23, 1965)
20 566 70 9,632
25 874 100 19,541
30 1,352 150 41,545
40 2,742 200 71,329
50 4,578 206 75,473
RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999
DAILY OBSERVATION AT 2400 HOURS
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 49089 41359 41504 30527 33257 31087 14782 23607 69746 74342 62171 56133
2 48536 41111 41685 29831 32890 31561 14032 24821 69954 74272 61888 55876
3 47964 40859 44310 29150 32733 32429 13269 25185 70048 74099 61592 55608
4 47373 40593 44834 28443 32664 32383 12568 25132 69987 73829 61292 55655
5 46747 40363 44915 27689 32424 31975 12056 25149 70525 73469 60992 55685
6 46169 40179 44802 26881 32236 31435 11509 25932 71574 73234 60743 55685
7 45588 40123 44743 26205 33443 30782 10960 27485 72258 73193 60986 55322
8 45001 39909 44315 25430 34448 30118 10440 28742 72615 73110 61223 54949
9 44679 39661 43709 25230 37138 29386 9927 29610 72904 73000 61354 54530
10 45275 39443 43112 25047 37542 28491 9418 30389 73200 72752 61429 53978
11 45870 39237 42524 24250 37300 27476 8947 31666 73787 72128 61454 53580
12 45442 39005 41939 23449 36859 26442 8651 33784 74113 71390 61379 53090
13 44856 38789 41504 22842 36308 25467 8648 35694 74474 70660 61285 52163
14 44267 38529 41055 22223 35743 24611 9004 36727 74613 69880 61492 51205
15 43682 38280 40531 22146 35105 23737 9480 37104 74578 69137 61674 50260
16 43349 38051 40235 23351 34828 22928 10164 37675 74613 68452 61586 49189
17 43852 37957 39970 24583 35411 22265 11255 38834 74703 68312 61229 48263
18 44416 37784 39590 28224 35416 21726 12616 40485 74738 67546 60463 48286
19 44278 37547 39126 30265 35057 21274 14141 42294 74766 66798 59683 48742
20 44065 37286 38589 33424 34553 20753 15673 44049 74794 66054 58920 49201
21 43772 37443 37982 34099 34056 20064 16928 46125 74815 65307 58405 49656
22 43497 37784 37340 34425 33312 19270 17565 48904 74836 64546 57882 50113
23 43280 38915 36678 35989 32498 18508 17901 52129 74808 63777 57343 50561
24 43154 39423 36008 36168 31729 17802 18562 55489 74745 62988 57216 51022
25 42970 39206 35344 36139 31128 17183 19791 59615 74509 62203 57083 51462
26 42786 38809 34666 36158 30376 16914 21650 63458 74272 61411 56926 51910
27 42571 38504 33986 35921 29544 16893 22504 66857 73988 60824 56770 52360
28 42335 38186 33299 35430 29562 16712 22822 68951 73780 60955 56836 52776
29 42106 38220 32599 34828 --- 16361 22714 69278 73932 61373 56872 53236
30 41835 40957 31898 34198 --- 15968 22741 69365 74168 61756 56631 53673
31 41576 --- 31218 33611 --- 15469 --- 69438 --- 61982 56385 ---
MAX 49089 41359 44915 36168 37542 32429 22822 69438 74836 74342 62171 56133
MIN 41576 37286 31218 22146 29544 15469 8648 23607 69746 60824 56385 48263
a 150.06 148.86 128.69 133.90 124.97 88.45 108.48 197.19 204.13 185.70 176.59 172.01
b -8085 -619 -9739 +2393 -4049 -14093 +7272 +46697 +4730 -12186 -5597 -2712
c 31000 28480 33850 26600 27100 15370 1720 27950 40210 40030 41780 20640
d 3360 2910 2230 3450 4100 8210 4830 8650 9000 5810 4070 4370
CAL YR 1998 MAX 74787 MIN 18436 b +11702 c 474000 d 67640
WTR YR 1999 MAX 74836 MIN 8648 b +4012 c 334700 d 61000
USGS Water Resources of California
USGS Headquarters |
Biology |
Geology |
Mapping |
Water