2001 California Hydrologic Data Report
11477000 EEL RIVER AT SCOTIA, CA.
LOCATION - Lat 40°29'30", long 124°05'55", in SW 1/4 sec.5, T.1 N., R.1 E., Humboldt County, Hydrologic
Unit 18010105, near center of span in left pier of A.S. Murphy Memorial Bridge on State Highway
283, 0.5 mi north of Scotia, and 6 mi upstream from Van Duzen River.
DRAINAGE AREA - 3,113 mi".
PERIOD OF RECORD - October 1910 to current year. Monthly discharge only for some periods and yearly estimates
for 1915.16, published in WSP 1315-B. CHEMICAL DATA: Water years 1952.75, 1977, 1979.95. BIOLOGICAL
DATA: Water years 1979.81. SEDIMENT DATA: Water years 1955.95, 1998. SPECIFIC CONDUCTANCE:
Water years 1979.81. WATER TEMPERATURE: Water years 1958.82.
REVISED RECORDS - WSP 931: 1938. WSP 1315-B: 1914.15(M), 1917(M), 1927.28(M), 1936(M), 1939(M). WSP 1345:
Drainage area. WSP 1715: 1959.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 35.50 ft above sea level. Prior to
Dec. 12, 1940, nonrecording gage at same site and datum.
REMARKS - Records good except for estimated daily discharges, which are fair. Low flow slightly regulated
by Lake Pillsbury (station 11470000) 138 mi upstream since December 1921 and by diversion through
Potter Valley Powerhouse Intake (station 11471000). See schematic diagram of Eel River Basin.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 752,000 ft³/s, Dec. 23, 1964, gage height, 72.0 ft,
from floodmarks, from rating curve extended above 220,000 ft³/s, on basis of maximum flow at upstream
stations; minimum observed, 10 ft³/s, Aug. 12.14, 1924.
EXTREMES FOR CURRENT YEAR - Peak discharges greater than base discharge of 72,000 ft³/s, or maximum:
Discharge Gage height Date Time (ft³/s) (ft) Mar. 5 1230 59,000 24.97
DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 66 1620 3210 941 3620 9040 4660 2320 510 502 83 52
2 66 1090 2040 877 3170 8000 4420 2280 486 431 74 52
3 68 793 1400 823 2960 8020 3850 2170 456 368 68 52
4 68 623 1100 773 3050 12700 3430 1980 431 326 67 49
5 68 526 924 728 3250 e49900 3120 1840 425 292 63 47
6 68 469 791 695 3200 e23400 2960 1770 416 269 59 47
7 68 421 700 664 2810 17300 3000 1730 403 239 55 45
8 68 404 635 853 2410 13600 3050 1670 382 206 53 47
9 73 454 593 1340 2540 11500 2900 1650 361 184 52 46
10 81 374 560 4350 4080 9680 2770 1640 350 171 51 47
11 89 332 556 10700 5120 8180 2720 1580 338 161 49 48
12 87 312 634 8170 6410 7100 2600 1500 e323 153 48 49
13 92 323 763 4660 5720 6200 2520 1420 e305 121 47 48
14 102 386 2450 3300 5100 5710 2380 1360 293 140 47 46
15 110 413 4990 2540 4790 5560 2250 1320 272 134 49 46
16 112 415 4100 2070 4420 4990 2180 1280 275 129 47 123
17 122 407 2940 1740 5510 4490 2370 1310 265 122 49 122
18 121 384 2040 1540 14800 4200 2450 1320 255 116 46 88
19 121 357 1570 1390 12700 4480 2720 1180 241 113 50 68
20 124 332 1320 1280 20000 4710 3280 1080 228 109 47 59
21 134 307 1220 1200 41300 5290 4210 1010 217 109 47 59
22 145 317 1560 1140 42300 5580 4200 944 203 108 48 56
23 143 314 2210 1170 33200 5910 3850 884 182 106 49 52
24 136 333 2640 2510 20700 5780 3420 826 169 100 50 49
25 141 363 2170 7000 22700 7490 3230 771 168 94 54 48
26 153 376 1850 12000 21100 9290 3180 714 187 93 44 45
27 171 377 e1580 10600 14800 6260 3210 653 349 89 51 45
28 224 378 1360 7420 11400 5130 3090 609 470 83 48 47
29 515 724 1210 5670 --- 5380 2860 575 411 85 48 45
30 1470 2360 1100 5250 --- 5240 2590 553 428 92 52 46
31 2200 --- 1010 4440 --- 5020 --- 538 --- 92 53 ---
TOTAL 7206 16284 51226 107834 323160 285130 93470 40477 9799 5337 1648 1673
MEAN 232 543 1652 3479 11540 9198 3116 1306 327 172 53.2 55.8
MAX 2200 2360 4990 12000 42300 49900 4660 2320 510 502 83 123
MIN 66 307 556 664 2410 4200 2180 538 168 83 44 45
AC-FT 14290 32300 101600 213900 641000 565600 185400 80290 19440 10590 3270 3320
e Estimated.
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