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USGS Daily Statistics for the Nation

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 11481000 MAD R NR ARCATA CA


Humboldt County, California
Hydrologic Unit Code 18010102
Latitude  40°54'36", Longitude 124°03'34" NAD27
Drainage area 485  square miles
Gage datum 14.25 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 1962-10-01 -> 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 3,270 2,980 2,870 2,720 1,030 560 111 47 60 72 250 2,030
2 2,730 3,000 3,170 2,340 964 484 106 47 53 65 234 2,540
3 2,500 3,150 3,130 2,160 988 428 100 46 50 62 252 2,270
4 2,910 2,820 2,690 2,020 1,010 413 99 47 48 57 275 2,150
5 2,940 2,530 2,760 1,940 1,030 407 94 46 48 58 366 2,450
6 2,860 2,580 2,980 2,060 985 373 89 45 47 61 451 2,280
7 2,730 2,850 2,750 2,100 973 374 83 45 47 58 498 2,070
8 2,850 2,800 2,800 2,040 925 324 78 45 46 59 637 2,210
9 3,230 2,720 2,970 1,970 917 298 75 45 46 98 715 2,160
10 3,190 2,620 3,060 1,900 894 276 73 45 50 146 703 2,340
11 3,430 2,400 2,830 1,950 828 253 71 45 48 162 793 2,210
12 3,280 2,310 2,730 2,000 780 232 70 44 46 268 978 2,150
13 3,850 2,720 3,110 2,000 719 221 68 44 46 261 886 2,360
14 3,960 3,150 3,510 1,980 658 207 66 44 48 212 888 2,760
15 3,830 3,070 3,120 1,810 621 204 64 44 50 167 857 2,740
16 4,430 3,280 3,170 1,740 623 185 63 44 49 141 960 2,650
17 4,410 3,530 2,890 1,810 645 176 63 44 55 138 1,040 2,560
18 3,800 3,520 3,050 1,730 689 190 63 47 60 114 1,020 2,070
19 3,790 3,640 2,740 1,660 677 197 61 47 73 143 912 2,310
20 4,230 3,620 2,450 1,580 585 188 58 47 65 142 1,070 2,450
21 4,300 3,500 2,450 1,540 559 172 56 48 58 135 1,510 3,270
22 3,950 3,240 2,540 1,430 606 159 55 48 53 165 1,740 3,720
23 3,490 2,990 2,690 1,430 539 148 55 46 56 316 1,590 3,380
24 3,510 2,700 2,900 1,530 484 140 53 48 63 272 1,820 3,080
25 3,110 2,810 3,010 1,460 457 134 52 47 74 396 1,650 2,700
26 3,470 2,950 2,870 1,360 445 133 51 48 88 355 1,610 2,490
27 3,580 3,100 2,600 1,320 492 128 50 46 100 248 1,590 2,890
28 3,150 3,250 2,680 1,260 520 122 50 46 76 240 1,650 3,590
29 2,940 3,910 2,660 1,180 457 120 49 46 80 259 1,590 3,650
30 2,750   3,100 1,110 440 115 48 55 93 294 1,690 3,820
31 2,730   2,870   530   47 77   292   3,720