2000 California Hydrologic Data Report
b Change in contents, in acre-feet.
11250100 MILLERTON LAKE AT FRIANT, CA.
LOCATION - Lat 37°00'00", long 119°42'13", in SW 1/4 SW 1/4 sec.5, T.11 S., R.21 E., Fresno County,
Hydrologic Unit 18040006, near center of Friant Dam, on San Joaquin River, just upstream from Cottonwood
Creek, 0.9 mi northeast of Friant.
DRAINAGE AREA - 1,638 mi".
PERIOD OF RECORD - October 1941 to current year. Monthend contents only for some periods, published in
WSP 1315-A.
GAGE - Water-stage recorder. Datum of gage is sea level (levels by U.S. Bureau of Reclamation). Prior
to May 29, 1944, nonrecording gage on left bank at same datum.
REMARKS - Reservoir is formed by gravity-type concrete dam with spillway near center, completed in December
1942. Control valves installed in February 1944, and spillway gates installed in November 1947.
Usable capacity, 503,200 acre-ft between elevations 375.4 ft, invert of river outlet, and 578.0 ft,
top of drum-type spillway gates. Not available for release, 17,400 acre-ft. Millerton Lake is one
of the storage units in the Central Valley Project. Records, including extremes, represent total contents
at 2400 hours. See schematic diagram of lower San Joaquin River Basin.
COOPERATION - Records and capacity table were provided by U.S. Bureau of Reclamation.
EXTREMES FOR PERIOD OF RECORD - Maximum contents, 528,800 acre-ft, Jul. 21, 1998, elevation, 579.68 ft,
(maximum instantaneous contents, 530,500 acre-ft, at 1300 hours, Jan. 3, 1997, elevation 580.01 ft);
minimum since lake first filled, 133,600 acre-ft, Apr. 11, 1969, elevation, 467.81 ft.
EXTREMES FOR CURRENT YEAR - Maximum contents, 521,200 acre-ft, Jun. 6, elevation, 578.14 ft; minimum,
209,800 acre-ft, Oct. 20, elevation, 498.00 ft. Capacity table (elevation, in feet, and contents, in
acre-feet) (Based on table provided by U.S. Bureau of Reclamation, dated 1921) 400 36,400 440 83,300
480 161,700 520 279,400 560 436,500 420 57,000 460 117,500 500 215,000 540 353,000 580 530,400
RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000
DAILY OBSERVATION AT 2400 HOURS
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 232100 221100 236700 279300 312600 429400 460400 516500 511400 498900 368400 262800
2 230300 221800 237300 280100 314500 435000 458000 516000 511300 495700 365500 258900
3 227800 221500 238800 280600 315500 440400 454700 513700 514900 495400 362600 255700
4 226300 220900 240100 281700 316300 444400 450000 512000 517300 491300 358300 252600
5 225500 220800 241400 282700 317800 453600 446300 509700 520700 487800 355200 250400
6 221900 220800 244200 282700 317800 462200 443700 508300 521200 485900 353300 246600
7 219000 221200 246100 283000 318800 469400 442700 506300 520800 481500 351200 243600
8 217400 221700 247500 283000 319600 476900 443200 503300 519200 476900 348100 242500
9 216100 222100 249200 283100 320600 482300 443700 500400 521100 472700 344100 240500
10 215300 222100 250800 283300 321200 486500 445400 497500 520900 468100 341400 239700
11 215700 221800 252300 283400 323900 490100 446500 496800 519700 464000 337700 238400
12 215400 222600 253800 283200 327100 493600 448500 495100 519600 456000 335300 237900
13 215300 222600 255100 283300 333400 495700 450900 492800 519200 450200 331900 236100
14 213700 222800 256500 283500 344800 497500 454600 491100 519700 443700 328700 234300
15 213000 223500 257900 283800 351600 499200 459000 489100 520800 438400 324600 233400
16 212600 223700 259100 282600 355900 499700 463000 487000 519800 433300 321300 232400
17 211900 224500 260500 280900 361400 500300 468700 485900 521100 430100 317700 231700
18 211300 225300 261300 279900 365600 500600 474500 484600 520000 422200 313300 231300
19 210500 225900 262400 280200 370400 500700 479800 483100 519100 416600 307900 229700
20 209800 226900 264700 281300 375100 501400 487000 482800 518600 410900 302600 228400
21 210600 227700 265800 284400 380700 501200 493100 482300 517100 407700 298200 226600
22 211800 228300 267900 285300 385700 500300 498800 480100 516900 404100 294900 224600
23 212700 229800 269000 286200 393700 497000 502800 481000 515700 400400 291600 223300
24 214300 230700 270300 290700 399100 491000 508000 484800 514400 396800 288600 222100
25 217000 231200 270800 298200 403700 486500 510600 490200 513100 393200 286900 221900
26 217900 231700 271800 302100 408200 482000 514000 493700 511600 390400 285000 220000
27 218700 232500 273200 304400 417100 476400 514100 497600 508300 387100 282900 218400
28 219000 233200 274700 306300 421000 470200 514300 503100 505900 384500 279700 215600
29 218700 234600 275800 307400 423200 466000 515200 509100 503700 381400 276300 213100
30 218400 235700 276600 309500 --- 464000 516300 510600 501400 375200 271800 211900
31 219000 --- 277500 311500 --- 462000 --- 511500 --- 371600 266900 ---
MAX 232100 235700 277500 311500 423200 501400 516300 516500 521200 498900 368400 262800
MIN 209800 220800 236700 279300 312600 429400 442700 480100 501400 371600 266900 211900
a 501.13 506.65 519.46 529.07 556.97 565.65 577.13 576.15 574.05 544.68 516.31 498.72
b -15900 +16700 +41800 +34000 +111700 +38800 +54300 -4800 -10100 -129800 -104700 -55000
CAL YR 1999 b -140200
WTR YR 2000 b -23000
[an error occurred while processing this directive]