11521500 INDIAN CREEK NEAR HAPPY CAMP, CA
LOCATION.-Lat 41°50'07", long 123°22'55", in SW 1/4 SW 1/4 sec.26, T.17 N., R.7 E., Siskiyou County,
Hydrologic Unit 18010209, on right bank, 0.2 mi upstream from Slater Creek, 3.0 mi north of Happy Camp, and 3.5
mi upstream from mouth.
DRAINAGE AREA.-120 mi2.
PERIOD OF RECORD.-September 1911 to September 1921 (fragmentary), December 1956 to current year. Monthly
discharge only for some periods, published in WSP 1315-B.
REVISED RECORDS.-WSP 1635: 1957-58.
GAGE.-Water-stage recorder. Datum of gage is 1,198.37 ft above sea level. Prior to December 1956, nonrecording
gages at sites 1.0 mi upstream at different datums. December 1956 to Sept. 20, 1969, water-stage recorder at site
0.8 mi upstream at different datum.
REMARKS.-Records fair. Small diversions upstream and at station for irrigation. See schematic diagram of Klamath
River and Trinity River Basins.
EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 39,000 ft3/s, Dec. 22, 1964, gage height, 24.3 ft,
from floodmarks, present site and datum; 36.59 ft from floodmarks in gage well, from rating curve extended above
6,000 ft3/s on basis of slope-area measurement at gage height 29.0 ft, previous site and datum;
minimum discharge observed, 20 ft3/s, Aug. 19 to Sept. 6, 1914.
EXTREMES OUTSIDE PERIOD OF RECORD.-Flood of Dec. 21, 1955, reached a stage of 29.0 ft, at 1956-69 site and datum,
from floodmarks, discharge, 23,000 ft3/s on basis of slope-area measurement of peak flow.
EXTREMES FOR CURRENT YEAR.-Peak discharges greater than base discharge of 3,100 ft3/s, or maximum:
Discharge Gage height Discharge Gage height
Date Time (ft3/s) (ft) Date Time (ft3/s) (ft)
Nov. 21 1130 6,500 11.15 Jan. 17 2045 3,410 8.89
Dec. 2 1615 3,670 9.11 Feb. 28 0645 4,480 9.78
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 52 73 1470 362 450 2340 658 927 1020 273 102 69
2 54 66 2920 333 427 1740 637 994 877 256 101 68
3 55 66 1970 316 409 1660 632 937 731 242 101 67
4 55 68 1210 301 402 1380 605 827 698 231 99 66
5 54 84 901 290 385 1160 598 755 782 218 99 64
6 53 81 717 281 740 1020 572 810 732 213 104 63
7 53 104 612 272 1370 905 561 866 631 208 118 62
8 64 101 543 262 1090 873 563 792 580 197 108 62
9 61 84 476 253 851 811 541 730 553 192 102 61
10 61 93 434 247 696 748 553 692 552 187 100 60
11 59 92 409 242 600 696 555 690 574 182 101 59
12 58 84 457 237 542 666 581 807 609 178 97 59
13 67 78 600 232 516 666 658 792 625 171 94 59
14 65 79 570 265 512 785 726 712 665 163 92 58
15 61 103 491 753 498 783 801 647 667 154 90 57
16 59 154 444 748 673 762 942 624 608 147 87 57
17 58 173 431 1350 1230 758 1200 676 592 143 85 57
18 57 140 428 1840 1510 742 1360 888 551 139 82 56
19 57 115 401 1410 1380 767 1270 953 504 135 81 56
20 56 382 376 1450 1080 816 1170 948 483 132 80 55
21 55 4350 351 1370 973 823 1090 919 459 129 78 55
22 55 1730 323 1640 915 822 992 983 447 125 76 54
23 55 2210 323 1820 1300 798 947 1240 431 122 75 54
24 75 1400 308 1260 1530 1030 1010 1430 408 122 75 53
25 73 1290 288 998 1550 1050 1180 1450 363 118 73 53
26 64 1860 287 834 1220 949 1190 1310 329 115 71 53
27 61 1170 282 705 1370 859 1020 1320 312 112 70 53
28 60 772 310 626 3830 782 875 1270 297 110 70 52
29 59 648 338 568 --- 756 789 1160 298 108 69 52
30 58 1560 322 523 --- 739 788 1050 294 106 72 51
31 62 --- 373 487 --- 705 --- 999 --- 104 72 ---
TOTAL 1836 19210 19365 22275 28049 29391 25064 29198 16672 5032 2724 1745
MEAN 59.2 640 625 719 1002 948 835 942 556 162 87.9 58.2
MAX 75 4350 2920 1840 3830 2340 1360 1450 1020 273 118 69
MIN 52 66 282 232 385 666 541 624 294 104 69 51
AC-FT 3640 38100 38410 44180 55640 58300 49710 57910 33070 9980 5400 3460
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1957 - 1999, BY WATER YEAR (WY)
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
MEAN 80.7 320 626 747 831 794 671 562 269 102 60.9 52.4
MAX 414 1498 3156 2230 2820 1896 1372 1368 579 204 100 102
(WY) 1963 1974 1965 1970 1958 1972 1966 1969 1975 1983 1983 1978
MIN 29.8 45.6 45.7 50.5 87.1 170 202 152 71.8 36.5 26.3 27.9
(WY) 1992 1960 1977 1977 1977 1977 1977 1992 1992 1977 1977 1992
SUMMARY STATISTICS FOR 1998 CALENDAR YEAR FOR 1999 WATER YEAR WATER YEARS 1957 - 1999
ANNUAL TOTAL 229942 200561
ANNUAL MEAN 630 549 425
HIGHEST ANNUAL MEAN 817 1974
LOWEST ANNUAL MEAN 83.7 1977
HIGHEST DAILY MEAN 7270 Mar 23 4350 Nov 21 30700 Dec 22
1964
LOWEST DAILY MEAN 52 Oct 1 51 Sep 30 21 Sep 12
1977
ANNUAL SEVEN-DAY MINIMUM 53 Sep 25 52 Sep 24 22 Sep 8
1977
INSTANTANEOUS PEAK FLOW 6500 Nov 21 39000 Dec 22
1964
INSTANTANEOUS PEAK STAGE 11.15 Nov 21 24.30 Dec 22
1964
ANNUAL RUNOFF (AC-FT) 456100 397800 307800
10 PERCENT EXCEEDS 1340 1260 981
50 PERCENT EXCEEDS 468 428 212
90 PERCENT EXCEEDS 57 59 47
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