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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 11526400 TRINITY R AB NF TRINITY R NR HELENA CA


Trinity County, California
Hydrologic Unit Code 18010211
Latitude  40°46'00", Longitude 123°06'48" NAD27
Drainage area 1,137  square miles
Gage datum 1,380 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 2004-10-01 -> 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 1,300 1,160 1,280 1,400 3,670 2,990 1,580 596 731 508 482 633
2 1,140 1,380 1,320 1,350 3,900 2,930 1,530 575 751 502 486 875
3 1,020 1,400 1,300 1,310 4,130 2,990 1,480 566 770 504 451 657
4 1,180 1,320 1,260 1,260 4,400 2,970 1,440 559 730 520 462 704
5 1,090 1,350 1,260 1,290 4,730 2,830 1,400 554 692 520 433 777
6 983 1,610 1,590 1,370 4,950 2,760 1,370 550 667 514 474 699
7 945 1,940 1,430 1,600 4,940 2,710 1,330 553 661 505 504 670
8 1,120 1,570 1,270 1,530 4,790 2,620 1,290 546 656 504 472 655
9 1,280 1,920 1,280 1,440 4,740 2,450 1,250 541 713 505 450 647
10 1,260 1,720 1,430 1,320 4,720 2,360 1,200 540 773 524 439 772
11 1,330 1,450 1,350 1,320 4,600 2,310 1,140 536 729 522 427 901
12 1,170 1,290 1,320 1,570 4,370 2,250 1,080 533 691 508 437 778
13 1,390 1,280 1,330 1,620 4,290 2,210 1,020 533 694 510 451 799
14 1,330 1,390 1,390 1,490 4,420 2,210 967 559 674 544 482 893
15 1,230 1,330 1,300 1,530 4,330 2,150 925 555 673 533 458 1,080
16 1,300 1,310 1,430 1,560 4,230 2,100 895 558 668 497 478 842
17 1,790 1,200 1,360 1,710 4,030 2,080 875 620 782 440 447 739
18 1,850 1,170 1,270 1,990 4,050 2,020 850 655 837 407 445 710
19 1,780 1,110 1,260 1,790 4,280 1,980 817 611 799 465 444 918
20 1,770 1,110 1,330 1,660 4,130 1,910 789 580 736 414 533 952
21 1,700 1,180 1,410 1,530 3,840 1,870 767 620 722 393 560 1,040
22 1,590 1,190 1,330 1,600 3,720 1,830 744 682 706 385 542 1,170
23 1,490 1,190 1,240 1,810 3,700 1,830 715 656 612 421 512 1,030
24 1,390 1,180 1,320 2,000 3,670 1,790 702 740 544 519 500 868
25 1,340 1,160 1,340 2,140 3,630 1,740 687 743 519 470 470 799
26 1,380 1,280 1,310 2,290 3,480 1,750 670 889 511 465 472 836
27 1,240 2,030 1,360 2,630 3,340 1,730 673 923 504 447 498 1,030
28 1,170 1,530 1,490 2,910 3,280 1,720 669 825 494 438 483 1,460
29 1,300 944 1,450 3,410 3,220 1,670 663 862 501 457 515 1,240
30 1,280   1,510 3,710 3,140 1,610 630 850 547 478 645 1,450
31 1,170   1,470   3,070   606 764   468   1,840