11250000 FRIANT-KERN CANAL AT FRIANT, CA
LOCATION.-Lat 36°59'53", long 119°42'11", in SE 1/4 SW 1/4 sec.5, T.11 S., R.21 E., Fresno County,
Hydrologic Unit 18040006, at Friant Dam, 0.9 mi northeast of Friant.
PERIOD OF RECORD.-March 1949 to current year.
GAGE.-Discharge computed on basis of megawatt meter reading, efficiency of generator coefficient, and net head on
turbines. Prior to January 1986, discharge computed on basis of valve openings and head on valves. Prior to July
8, 1949, nonrecording gages at various sites and datums. July 8 to Sept. 30, 1949, water-stage recorder at site
0.2 mi downstream.
REMARKS.-Canal diverts from Millerton Lake (station 11250100) at left end of Friant Dam for irrigation in upper
San Joaquin Valley. See schematic diagram of lower San Joaquin River Basin.
COOPERATION.-Records were provided by U.S. Bureau of Reclamation and reviewed by the U.S. Geological Survey.
EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 5,330 ft3/s, June 25, 1982; no flow for many
days in most years.
DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 1780 608 303 900 1170 842 954 1850 3250 3870 2770 2420
2 1620 679 303 871 1420 858 925 1940 3320 3640 2910 1760
3 1470 671 101 965 1500 958 700 2090 3160 3410 2980 1140
4 1480 650 .00 1050 1530 1000 817 2210 2980 3350 3000 842
5 1560 592 190 1110 1640 1000 842 2310 2780 3470 2880 917
6 1720 492 380 1180 1730 942 771 2350 2820 3700 2550 1120
7 1860 407 380 1180 1780 927 683 2260 2900 3830 2150 1320
8 1840 377 380 575 1780 1070 650 2110 2900 3820 2250 1400
9 1720 378 430 391 1600 1150 621 2170 2990 3680 2550 1340
10 1540 379 675 385 1500 1090 600 2320 3050 3570 2650 1180
11 1560 337 800 385 1500 1050 600 2480 2960 3730 2710 1040
12 1630 301 800 385 1540 933 513 2500 2900 4010 2790 1060
13 1680 297 800 385 1650 850 450 2380 3080 4180 2620 1160
14 1700 297 819 385 1760 908 450 2150 3470 4210 2500 1200
15 1670 298 850 385 1800 950 450 2270 3700 4140 2720 1200
16 1590 299 917 385 1800 950 519 2730 3730 3920 2930 1300
17 1500 300 1220 385 1950 921 629 2680 3700 3680 3020 1180
18 1500 301 1250 385 2180 900 738 2590 3900 3710 3140 883
19 1560 301 1340 385 2240 842 917 2650 3980 3770 3220 858
20 1650 302 1490 339 2200 771 1150 2590 4020 3690 2960 900
21 1760 88.0 1640 308 2260 721 1320 2380 4010 3800 2650 958
22 1710 .00 1800 309 2300 1010 1850 1710 3900 3780 2460 1270
23 1570 .00 1810 311 2530 1330 2040 1670 3880 3490 2400 1420
24 1450 172 1700 312 2760 1130 2000 2230 3860 3260 2430 1220
25 1510 305 1580 104 2980 892 2150 2400 3560 3340 2630 1100
26 1550 304 1470 .00 3130 958 2370 2400 3150 3480 2690 1190
27 1550 304 1450 .00 2920 1050 2480 2740 3140 3500 2520 1250
28 1490 303 1300 449 1530 1110 2440 2840 3300 3620 2300 1310
29 1390 303 900 750 --- 1150 2310 2630 3540 3550 2500 1400
30 1060 303 821 779 --- 1210 2080 2800 3750 3170 2640 1420
31 550 --- 817 917 --- 1080 --- 3040 --- 2740 2650 ---
TOTAL 48220 10348.00 28716.00 16650.00 54680 30553 35019 73470 101680 113110 83170 36758
MEAN 1555 345 926 537 1953 986 1167 2370 3389 3649 2683 1225
MAX 1860 679 1810 1180 3130 1330 2480 3040 4020 4210 3220 2420
MIN 550 .00 .00 .00 1170 721 450 1670 2780 2740 2150 842
AC-FT 95640 20530 56960 33030 108500 60600 69460 145700 201700 224400 165000 72910
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1949 - 1999, BY WATER YEAR (WY)
MEAN 868 327 94.7 223 1254 1236 1393 1662 2665 2959 2590 1522
MAX 3085 1364 926 1349 4505 3551 4476 4238 4529 4905 4339 4033
(WY) 1979 1979 1999 1966 1965 1965 1962 1993 1993 1993 1967 1967
MIN .000 .000 .000 .000 .000 5.13 32.2 87.5 598 262 384 1.33
(WY) 1950 1950 1950 1950 1950 1991 1998 1977 1977 1949 1949 1950
SUMMARY STATISTICS FOR 1998 CALENDAR YEAR FOR 1999 WATER YEAR WATER YEARS 1949 - 1999
ANNUAL TOTAL 448351.00 632374.00
ANNUAL MEAN 1228 1733 1410
HIGHEST ANNUAL MEAN 2356 1993
LOWEST ANNUAL MEAN 270 1950
HIGHEST DAILY MEAN 4540 Jul 29 4210 Jul 14 5330 Jun 25
1982
LOWEST DAILY MEAN .00 Jan 12 .00 Nov 22 .00 Jul 5
1949
ANNUAL SEVEN-DAY MINIMUM .00 Feb 24 166 Nov 18 .00 Sep 11
1949
ANNUAL RUNOFF (AC-FT) 889300 1254000 1022000
10 PERCENT EXCEEDS 3280 3480 3550
50 PERCENT EXCEEDS 650 1530 993
90 PERCENT EXCEEDS .00 380 .00
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