USGS
1995 California Hydrologic Data Report
11413515 NEW BULLARDS BAR RESERVOIR NEAR NORTH SAN JUAN, CA
LOCATION.--Lat 39`23'34", long 121`08'25", in SE 1/4 NW 1/4 sec.25, T.18 N., R.7 E., Yuba County, Hydrologic Unit
18020125, Plumas National Forest, in center of dam on North Yuba River, 2.2 mi upstream from Middle Yuba
River, and 2.4 mi northwest of North San Juan.
DRAINAGE AREA.--489 mi2.
PERIOD OF RECORD.--January 1969 to current year.
GAGE.--Water-stage recorder. Datum of gage is sea level (levels by Yuba County Water Agency).
REMARKS.--Reservoir is formed by concrete-arch dam with a concrete-sidehill spillway. Spill controlled by three
30-ft by 53-ft radial gates. Storage began in January 1969. Usable capacity, 727,380 acre-ft between
elevations 1,732.0 ft, minimum power poo1, and l,955.0 ft, normal gross pool. Dead storage, 233,920 acre-ft.
Total capacity at normal gross pool, 961,300 acre-ft, e1evation, 1,955.0 ft. Water is released to Colgate
Powerplant through a tunnel at the dam. Water is diverted into the reservoir from Middle Yuba River via
Lohman Ridge Tunnel to Oregon Creek then via Camptonville Tunnel. Records, including extremes, represent
total contents at 2400 hours. See schematic diagram of Yuba River basin.
COOPERATION.--Records provided by Yuba County Water Agency, 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, 972,224 acre-ft, June 27, 1995, elevation, 1,957.27 ft; minimum
since reservoir first filled, 178,230 acre-ft, Dec. 29, 1980, elevation, 1,700.00 ft.
EXTREMES FOR CURRENT YEAR.--Maximum contents, 972,224 acre-ft, June 27, elevation, 1,957.27 ft; minimum,
476,519 acre-ft, Dec. 1, elevation, 1,830.10 ft.
Capacity table (elevation, in feet, and contents, in acre-feet)
(Based on survey by Yuba County Water Agency in 1969)
1,600 64,900 1,750 270,110
1,630 90,570 1,800 389,977
1,660 122,993 1,850 539,748
1,690 162,983 1,900 721,130
1,720 211,768 1,960 985,471
RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1994 TO SEPTEMBER 1995
DAILY OBSERVATION AT 2400 HOURS
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 505870 483333 476519 530453 785165 725539 784704 901198 948468 969956 912661 825169
2 505521 482593 476917 530421 784997 726574 785835 897628 951700 969860 910906 822404
3 504667 481731 483240 530029 782028 735332 787009 893567 952987 969763 908968 819387
4 505046 480932 494820 529605 778607 739273 788520 894250 953606 969619 905928 815819
5 504192 480963 500531 531303 775278 741652 790285 894842 953463 969860 903309 812604
6 502834 482531 503876 533891 773535 743228 792516 892792 953511 970101 901015 809526
7 500941 483487 506029 541434 773411 743592 802967 889880 953797 970052 897994 807051
8 501067 483671 507584 561552 772996 744077 813289 886430 954416 969570 895710 803264
9 501382 483671 508886 578914 771877 778232 819258 884980 954035 968655 893065 800802
10 500499 484565 510033 621284 770428 804413 823095 884164 954750 967739 890516 800420
11 499618 484535 511116 641831 768649 817022 825861 886293 956613 966776 887246 799911
12 498644 483733 512521 652445 766627 814875 829154 889698 958811 965045 884391 799360
13 497701 483024 513672 687734 765225 810081 836989 893339 961062 962836 881858 798556
14 496604 482501 514761 739354 763332 806583 842547 895892 962309 960247 878879 798048
15 496228 481885 515980 758037 760784 803009 846676 898496 963844 957472 875682 797498
16 495978 481331 517072 766297 757956 796398 849715 901794 963172 954846 873120 796906
17 494414 481454 518262 770138 754971 791674 851568 905100 962692 952415 870608 796356
18 493351 480502 519679 772084 751789 790159 852806 909890 963316 949703 867386 795807
19 492416 480348 521002 772498 748658 786925 853292 915764 963892 946664 864127 795132
20 491045 480317 522166 769063 745575 789402 854088 922455 963988 943632 861410 794245
21 489739 479305 523298 767782 742662 790496 854133 929461 963892 940607 858343 793950
22 490050 478416 524141 767040 739918 789486 853823 935328 965045 937400 855018 793781
23 490423 478079 524271 768319 737341 784746 853336 938955 966728 933730 852850 794118
24 488776 477987 525958 769931 735171 780775 853203 940134 968992 930887 849406 794498
25 487597 478661 527552 771628 733406 779773 853646 940370 970969 928385 847071 794625
26 486235 478753 527975 774033 731644 778857 854486 940843 972079 925953 843951 793444
27 485277 478324 528822 776484 729765 779398 855948 942071 972224 922874 840750 792643
28 484475 478386 530127 778815 727650 780817 859409 942780 971114 922315 837994 791547
29 484628 478079 530192 780441 --- 781902 877752 943679 970535 920082 834198 791084
30 484906 477314 530225 782070 --- 782612 881316 945005 970342 918037 830935 790664
31 484042 --- 530682 783533 --- 783491 --- 946712 --- 915949 827724 ---
MAX 505870 484565 530682 783533 785165 817022 881316 946712 972224 970101 912661 825169
MIN 484042 477314 476519 529605 727650 725539 784704 884164 948468 915949 827724 790664
a 1832.55 1830.36 1847.24 1915.32 1912.64 1915.31 1937.81 1951.94 1956.88 1945.38 1925.70 1917.02
b -22557 -6728 +53368 +252851 -55883 +55841 +97825 +65396 +23630 -54393 -88225 -37060
CAL YR 1994 b -24628
WTR YR 1995 b +284065
a Elevation, in feet, at end of month.
b Change in contents, in acre-feet.
Back to USGS 1995 California Hydrologic Data
Report
The URL for this page is
<http://water.wr.usgs.gov/data_95.html>.
If you have any questions or comments about this document contact:
Dale Alan Cox <dacox@usgs.gov>
U.S. Geological
Survey