2000 California Hydrologic Data Report
11478500 VAN DUZEN RIVER NEAR BRIDGEVILLE, CA.
LOCATION - Lat 40°28'50", long 123°53'23", in NE 1/4 SE 1/4 sec.12, T.1 N., R.2 E., Humboldt County,
Hydrologic Unit 18010105, on left bank, at downstream side of bridge on State Highway 36, 0.9 mi
upstream from Grizzly Creek, and 5 mi west of Bridgeville.
DRAINAGE AREA - 222 mi".
PERIOD OF RECORD - October 1950 to current year.
REVISED RECORDS - WSP 1735: Drainage area.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 358.18 ft above sea level. Prior to
Oct. 1, 1965, at site 2.4 mi upstream at different datum.
REMARKS - Records good. No storage or large diversion upstream from station. See schematic diagram of
Eel River Basin.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 48,700 ft³/s, Dec. 22, 1964, gage height, 24.0 ft,
from floodmarks, present site and datum, from rating curve extended above 20,000 ft³/s on basis of
slope-area measurement at gage height 21.3 ft, former site and datum; minimum daily, 4.4 ft³/s, Sept.
28, 1992.
EXTREMES FOR CURRENT YEAR - Peak discharges greater than base discharge of 15,000 ft³/s, or maximum:
Discharge Gage height Discharge Gage height Date Time (ft³/s) (ft) Date Time (ft³/s) (ft) Feb. 14 0800
20,500 12.39
DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 6.6 41 2000 131 3640 2730 337 268 139 35 14 7.6
2 6.6 34 1750 136 2440 1990 340 297 130 35 13 8.5
3 6.7 30 1410 131 1840 1680 348 271 122 35 13 11
4 6.6 26 961 184 1660 1690 351 250 115 34 12 13
5 6.6 24 692 239 2270 1900 332 236 110 34 12 11
6 8.7 23 564 179 2320 1540 311 226 107 36 11 10
7 9.5 25 916 155 1670 1390 288 244 106 36 11 10
8 10 66 846 144 1420 1330 275 338 119 38 11 9.8
9 9.7 154 1080 144 1220 1530 266 333 118 40 10 9.3
10 9.3 609 949 333 1120 1500 254 448 119 36 10 8.8
11 8.9 611 694 6480 1220 1830 243 598 108 32 10 8.8
12 8.5 390 697 2500 1960 1480 247 509 101 30 9.9 8.6
13 8.2 235 1430 2700 2690 1320 355 409 102 27 9.7 8.2
14 8.1 152 992 9040 15500 1270 419 370 94 25 9.5 8.6
15 7.9 138 718 7920 6380 1140 336 580 85 24 9.5 8.6
16 7.8 421 567 9400 2970 1070 477 539 79 23 9.4 8.7
17 7.7 671 482 4230 1800 990 1230 434 74 23 9.4 8.5
18 7.3 342 465 2650 1390 876 1220 369 67 23 9.4 8.2
19 7.0 1170 422 3390 1200 885 815 327 64 23 9.3 8.0
20 7.0 1670 373 3850 1120 797 614 295 61 22 9.0 7.6
21 7.0 980 335 2430 1060 686 506 268 57 21 8.8 7.2
22 7.0 577 299 2040 2050 624 443 246 54 20 9.0 6.9
23 7.0 424 259 1780 1850 604 401 227 52 19 9.0 6.7
24 7.1 345 230 2600 1410 555 360 212 50 18 8.7 6.7
25 7.3 270 208 3180 1500 512 337 199 48 18 8.7 6.6
26 7.7 230 191 2150 3670 477 315 187 45 17 8.4 6.5
27 12 218 175 1680 9480 455 300 177 42 16 8.1 6.5
28 122 186 161 1440 5430 438 370 170 39 16 8.1 6.5
29 180 328 151 1190 4290 406 321 161 37 15 8.1 6.5
30 82 2510 143 2050 --- 376 287 153 35 15 7.8 6.9
31 54 --- 135 2930 --- 351 --- 145 --- 15 7.5 ---
TOTAL 651.8 12900 20295 77406 86570 34422 12698 9486 2479 801 304.3 249.8
MEAN 21.0 430 655 2497 2985 1110 423 306 82.6 25.8 9.82 8.33
MAX 180 2510 2000 9400 15500 2730 1230 598 139 40 14 13
MIN 6.6 23 135 131 1060 351 243 145 35 15 7.5 6.5
AC-FT 1290 25590 40260 153500 171700 68280 25190 18820 4920 1590 604 495
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1951 - 2000, BY WATER YEAR (WY)
MEAN 146 898 1848 2303 2074 1635 922 444 143 36.4 17.0 19.7
MAX 1464 5476 6046 6608 6232 5015 3255 1139 821 98.0 82.4 144
(WY) 1963 1974 1956 1995 1958 1995 1963 1953 1993 1953 1983 1986
MIN 7.20 16.8 18.8 103 156 172 131 109 40.4 12.2 5.89 5.72
(WY) 1988 1960 1977 1977 1977 1988 1977 1985 1987 1977 1977 1992
SUMMARY STATISTICS FOR 1999 CALENDAR YEAR FOR 2000 WATER YEAR WATER YEARS 1951 - 2000
ANNUAL TOTAL 289306.4 258262.9
ANNUAL MEAN 793 706 869
HIGHEST ANNUAL MEAN 1610 1974
LOWEST ANNUAL MEAN 95.7 1977
HIGHEST DAILY MEAN 9670 Feb 28 15500 Feb 14 33900 Dec 22 1964
LOWEST DAILY MEAN 6.6 Sep 27 6.5 Sep 26 4.4 Sep 28 1992
ANNUAL SEVEN-DAY MINIMUM 6.7 Sep 29 6.6 Sep 23 4.6 Aug 13 1977
INSTANTANEOUS PEAK FLOW 20500 Feb 14 48700 Dec 22 1964
INSTANTANEOUS PEAK STAGE 12.39 Feb 14 24.00 Dec 22 1964
ANNUAL RUNOFF (AC-FT) 573800 512300 629500
10 PERCENT EXCEEDS 1920 1860 2160
50 PERCENT EXCEEDS 259 186 182
90 PERCENT EXCEEDS 8.1 8.2 12
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