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 New Colgate
   Powerplant (station 11413510) 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 (stations 11408870 and
   11409350).  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, 963,364 acre-ft, June 3, elevation, 1,955.43 ft; minimum,
   667,049 acre-ft, Jan. 15, elevation, 1,886.02 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 1995 TO SEPTEMBER 1996
                                        DAILY OBSERVATION AT 2400 HOURS

DAY       OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

  1    788688   730684   680678   683779   739475   761893   803179   905008   963172   940040   850200   729565
  2    786212   728248   679724   683702   738548   763332   807819   907493   963172   939474   845488   725499
  3    783951   726813   678503   683242   737139   764854   816034   910490   963364   936646   841451   721051
  4    782737   724783   677550   682400   760251   770965   820076   912477   963028   934012   837120   716618
  5    780274   722796   677664   681481   797329   777649   823570   913957   962453   931280   833284   711928

  6    779398   720812   676369   680564   809569   782070   826251   915300   961494   928713   829067   708042
  7    778732   719426   675190   679189   813375   783365   828721   916088   960870   926561   824736   704012
  8    777274   719268   674088   677474   813332   784034   831022   917155   960008   924273   820206   702061
  9    775694   717725   672912   676027   811150   784746   833763   919105   959913   922595   816163   700854
 10    773867   715790   671358   675000   808373   785626   836029   919942   959530   919989   812989   700309

 11    771918   713936   674544   673823   805135   788982   837688   920361   958620   917062   807862   699686
 12    769972   712282   700815   671547   801820   793317   838519   922175   957043   913865   803052   699297
 13    768071   710553   704051   669882   798556   795849   838781   924506   956326   912292   798810   698286
 14    766091   708316   702607   667993   795089   798133   840356   927075   954178   909705   793823   697976
 15    764072   706553   702061   667049   791295   798852   841407   932415   955276   907078   789444   697782

 16    762140   704794   699880   676369   788520   799318   846632   946759   956565   904594   784872   697433
 17    760169   703270   696463   685390   792179   799657   853734   959194   956804   901382   781359   696618
 18    758242   701048   692707   689004   799022   800420   860609   959290   956995   898222   778148   696890
 19    756319   699297   689582   695842   806157   801141   867833   956278   957281   896440   774407   696036
 20    754358   696890   690160   698831   806924   801948   872806   955419   956374   893521   771504   694990

 21    752319   695997   687580   700893   806711   802627   874827   956135   956135   890471   767823   694990
 22    750324   694099   686887   701087   797287   803392   875952   956852   954894   887427   764937   694447
 23    748292   692437   686004   701009   788226   803349   879781   956421   953272   883667   761564   693558
 24    746345   690276   684469   708669   780482   802500   882129   957090   951129   879961   758201   693133
 25    744320   689120   683281   720297   772498   801226   886838   958716   950986   876537   755012   692785

 26    742339   688503   681176   725380   768071   799657   890744   959817   948990   872177   751138   692012
 27    740361   686618   679380   731724   765802   797921   894523   960583   946996   870608   748008   691471
 28    738467   685313   677550   737984   764072   798344   897857   961158   945621   867028   745292   690276
 29    736456   683779   677169   739515   762386   797498   900602   962117   944437   862567   741652   687541
 30    734609   682170   679647   739596      ---   797118   902620   962788   942024   858343   737904   684200
 31    732645      ---   682706   739717      ---   796356      ---   963028      ---   854486   734007      ---

MAX    788688   730684   704051   739717   813375   803392   902620   963028   963364   940040   850200   729565
MIN    732645   682170   671358   667049   737139   761893   803179   905008   942024   854486   734007   684200
 a    1902.89  1890.00  1890.14  1904.65  1910.22  1918.37  1942.49  1955.36  1950.95  1931.81  1903.23  1890.53
 b     -58019   -50475     +536   +57011   +22669   +33970  +106264   +60408   -21004   -87538  -120479   -49807

CAL YR 1995  b +152024
WTR YR 1996  b -106464

  a Elevation, in feet, at end of month.
  b Change in contents, in acre-feet.