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USGS Surface-Water 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 11528700 SF TRINITY R BL HYAMPOM CA


Trinity County, California
Hydrologic Unit Code 18010212
Latitude  40°39'00", Longitude 123°29'35" NAD27
Drainage area 764  square miles
Gage datum 1,211.37 feet above NGVD29
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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 1965-10-01 -> 2021-09-30)

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 2,650 2,580 3,260 2,730 1,460 730 263 108 71 73 182 1,170
2 2,470 2,730 3,130 2,550 1,400 688 254 105 69 72 190 1,440
3 1,980 2,760 3,190 2,370 1,350 650 245 104 67 75 199 1,290
4 2,170 2,600 2,990 2,210 1,300 630 237 101 65 74 187 1,350
5 2,090 2,620 2,940 2,160 1,320 614 229 98 65 75 197 1,530
6 2,020 2,770 3,020 2,150 1,250 591 222 97 65 75 225 1,340
7 1,830 3,300 2,920 2,230 1,210 569 215 95 64 75 262 1,410
8 2,280 3,020 3,210 2,130 1,190 550 209 93 63 75 282 1,430
9 2,970 3,120 3,550 2,080 1,190 532 205 91 63 77 310 1,470
10 2,630 2,920 3,440 2,010 1,140 511 198 90 65 84 493 1,910
11 2,610 2,620 3,270 2,110 1,080 488 192 88 64 86 621 1,670
12 3,160 2,700 3,290 2,110 1,040 470 187 87 63 86 582 1,690
13 3,760 3,050 3,560 2,120 1,000 457 180 84 61 84 521 1,560
14 3,960 3,400 3,440 2,050 969 443 175 83 60 88 502 1,880
15 3,900 3,190 3,210 1,910 955 432 169 81 61 93 549 2,130
16 4,940 3,420 3,310 1,830 938 415 165 79 61 109 692 2,080
17 4,570 4,190 3,150 1,830 920 403 161 78 64 112 698 1,940
18 3,740 4,160 3,260 1,830 987 395 159 77 68 103 655 1,610
19 3,550 4,020 3,100 1,750 1,000 386 157 76 72 106 612 2,290
20 3,920 3,900 2,850 1,720 926 373 153 77 72 111 628 2,140
21 3,940 3,590 2,800 1,680 892 356 147 78 70 107 586 2,380
22 3,450 3,230 2,980 1,640 883 341 143 77 67 112 671 2,130
23 3,380 3,060 2,930 1,630 845 328 139 76 67 148 813 1,850
24 3,410 2,810 2,940 1,650 803 317 135 74 67 164 888 1,700
25 2,930 2,730 3,140 1,600 775 309 131 73 67 216 809 1,580
26 3,810 3,070 3,210 1,530 753 302 126 72 71 184 702 1,550
27 3,720 3,610 2,830 1,510 759 299 123 71 79 158 773 1,920
28 3,070 3,580 2,840 1,540 754 289 119 71 75 169 833 2,640
29 3,070 4,010 2,840 1,530 721 282 115 69 73 194 852 2,650
30 2,960   3,220 1,480 704 273 113 73 75 210 1,090 2,940
31 2,680   2,870   777   110 74   217   3,290