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USGS Daily Statistics for California

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The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 11469000 MATTOLE R NR PETROLIA CA


Humboldt County, California
Hydrologic Unit Code 18010107
Latitude  40°18'48", Longitude 124°16'56" NAD27
Drainage area 245  square miles
Gage datum 49.79 feet above NAVD88
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00060, Discharge, cubic feet per second,
Day of
month		 Mean of daily mean values for each day for water year of record in, ft3/s   (Calculation Period 1911-10-01 -> 2025-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 2,950 2,880 2,390 1,890 791 377 120 53 54 77 316 2,340
2 2,500 2,840 2,160 1,680 714 347 117 52 46 81 388 2,660
3 2,360 2,700 2,180 1,480 657 317 110 51 43 79 331 2,440
4 2,850 2,740 2,030 1,520 635 323 106 50 42 76 412 2,310
5 2,630 2,660 2,430 1,560 730 309 103 49 44 85 583 2,270
6 2,560 2,760 2,550 1,470 634 285 100 48 54 89 822 2,500
7 2,630 3,100 2,180 1,430 603 264 98 48 45 93 574 2,610
8 3,170 3,070 2,150 1,430 566 247 96 48 40 83 666 2,430
9 3,450 2,930 2,520 1,330 547 236 96 48 49 119 1,000 2,160
10 3,080 2,790 2,380 1,310 530 223 94 46 49 157 1,230 2,430
11 3,260 2,590 2,190 1,360 499 210 89 44 40 217 1,250 2,150
12 3,900 2,820 2,420 1,510 467 199 86 43 38 246 1,380 2,090
13 4,080 3,010 2,760 1,450 441 191 84 42 36 283 1,230 1,970
14 4,330 3,210 2,850 1,360 416 185 83 42 36 204 1,300 2,840
15 4,380 3,270 2,570 1,150 401 182 80 42 36 187 1,320 3,240
16 4,830 3,370 2,610 1,070 395 174 78 41 39 163 1,360 3,330
17 3,880 3,480 2,400 1,070 435 193 76 41 48 137 1,120 3,110
18 3,700 3,270 2,790 1,020 657 277 75 40 60 134 1,050 2,700
19 3,530 3,340 2,120 1,050 547 252 72 40 79 176 1,030 3,260
20 4,270 2,950 1,860 1,140 475 200 70 40 69 150 1,150 2,980
21 3,810 2,880 1,810 1,060 474 176 68 41 48 142 1,170 4,200
22 3,460 2,600 2,020 929 478 161 66 39 43 212 1,560 4,240
23 3,270 2,490 2,120 878 462 152 65 39 44 311 1,690 3,040
24 3,060 2,590 2,180 955 475 146 63 39 42 343 1,890 2,670
25 3,220 2,780 2,200 871 479 139 62 42 44 377 1,540 2,320
26 3,490 2,870 1,980 790 531 137 61 43 58 280 1,460 2,430
27 3,390 2,710 1,970 884 589 141 59 43 84 258 1,390 2,850
28 3,260 2,680 1,960 839 466 134 58 46 63 279 1,410 3,130
29 3,160 3,320 2,150 909 387 129 57 45 62 281 1,510 2,910
30 2,740   2,740 865 396 128 55 58 65 395 1,910 2,990
31 2,920   2,090   410   54 64   297   3,350