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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 3,200 3,000 2,880 2,720 1,030 560 111 47 60 72 252 2,040
2 2,630 2,970 3,180 2,340 964 484 106 47 53 65 235 2,560
3 2,310 2,900 3,120 2,160 988 428 100 46 50 62 253 2,280
4 2,780 2,540 2,690 2,020 1,010 413 99 47 48 58 277 2,170
5 2,860 2,400 2,760 1,940 1,030 407 94 46 48 58 370 2,480
6 2,810 2,510 2,980 2,060 985 373 89 45 47 62 456 2,300
7 2,690 2,800 2,750 2,100 973 374 83 45 47 58 504 2,090
8 2,840 2,770 2,800 2,040 925 324 78 45 46 59 646 2,230
9 3,230 2,700 2,970 1,970 917 298 75 45 46 98 725 2,180
10 3,210 2,620 3,060 1,900 894 276 73 45 50 148 713 2,370
11 3,450 2,400 2,830 1,950 828 253 71 45 48 164 804 2,240
12 3,300 2,310 2,730 2,000 780 232 70 44 46 271 991 2,160
13 3,880 2,700 3,110 2,000 719 221 68 44 46 264 895 2,360
14 4,000 3,010 3,510 1,980 658 207 66 44 48 215 885 2,680
15 3,870 3,000 3,120 1,810 621 204 64 44 50 169 855 2,690
16 4,480 3,240 3,170 1,740 623 185 63 44 49 142 968 2,620
17 4,470 3,490 2,890 1,810 645 176 63 44 55 140 1,050 2,530
18 3,850 3,500 3,050 1,730 689 190 63 47 60 115 1,010 2,050
19 3,840 3,620 2,740 1,660 677 197 61 47 73 144 911 2,310
20 4,280 3,600 2,450 1,580 585 188 58 47 65 144 1,040 2,450
21 4,360 3,500 2,450 1,540 559 172 56 48 58 136 1,280 3,290
22 4,000 3,250 2,540 1,430 606 159 55 48 53 166 1,460 3,750
23 3,540 2,960 2,690 1,430 539 148 55 46 56 320 1,460 3,400
24 3,550 2,670 2,900 1,530 484 140 53 48 63 275 1,760 2,970
25 3,150 2,790 3,010 1,460 457 134 52 47 74 401 1,610 2,630
26 3,520 2,950 2,870 1,360 445 133 51 48 88 360 1,560 2,450
27 3,630 3,110 2,600 1,320 492 128 50 46 100 250 1,550 2,780
28 3,190 3,270 2,680 1,260 520 122 50 46 76 242 1,630 3,470
29 2,980 3,910 2,660 1,180 457 120 49 46 80 261 1,570 3,360
30 2,780   3,100 1,110 440 115 48 55 93 297 1,680 3,660
31 2,760   2,870   530   47 77   295   3,660