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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 1,356.59 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 2004-10-01 -> 2024-09-30)

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 1,280 1,110 1,220 1,400 3,700 2,840 1,430 586 721 503 481 608
2 1,110 1,300 1,260 1,370 3,860 2,760 1,380 574 736 498 495 821
3 993 1,320 1,250 1,340 4,040 2,700 1,340 564 770 500 454 626
4 1,140 1,250 1,210 1,340 4,270 2,670 1,310 554 737 513 480 668
5 1,170 1,280 1,210 1,400 4,540 2,570 1,270 543 769 512 446 734
6 1,050 1,510 1,510 1,460 4,720 2,500 1,240 539 769 507 480 665
7 1,050 1,800 1,360 1,670 4,690 2,450 1,210 542 731 500 504 639
8 1,410 1,470 1,220 1,620 4,550 2,370 1,170 536 696 498 472 626
9 1,520 1,780 1,230 1,520 4,490 2,220 1,140 531 724 499 460 619
10 1,430 1,600 1,400 1,450 4,470 2,150 1,100 531 771 516 452 734
11 1,470 1,360 1,330 1,540 4,350 2,090 1,040 527 719 515 445 852
12 1,400 1,220 1,310 1,780 4,160 2,040 994 524 684 504 449 741
13 1,560 1,220 1,410 1,790 4,090 2,010 947 524 686 505 458 761
14 1,650 1,310 1,680 1,650 4,220 1,990 898 545 667 533 483 851
15 1,480 1,260 1,640 1,670 4,120 1,930 863 542 667 524 459 1,010
16 1,390 1,250 1,570 1,810 4,010 1,880 838 544 663 491 475 800
17 1,770 1,140 1,440 2,170 3,830 1,860 820 597 759 427 446 707
18 1,790 1,120 1,340 2,440 3,840 1,810 797 628 807 398 442 680
19 1,720 1,060 1,350 2,260 4,050 1,780 769 600 782 448 443 865
20 1,690 1,070 1,490 2,250 3,900 1,710 745 579 724 405 522 896
21 1,620 1,150 1,540 2,210 3,630 1,670 726 677 711 387 544 973
22 1,510 1,160 1,420 2,320 3,510 1,640 705 719 692 431 527 1,090
23 1,420 1,150 1,320 2,430 3,480 1,640 680 666 596 426 500 993
24 1,330 1,140 1,370 2,470 3,450 1,610 669 717 534 556 488 859
25 1,290 1,120 1,370 2,480 3,400 1,570 657 717 513 493 461 802
26 1,320 1,230 1,330 2,640 3,270 1,570 642 828 506 469 463 831
27 1,190 1,890 1,370 3,050 3,140 1,560 644 876 501 463 486 1,080
28 1,120 1,450 1,500 3,180 3,080 1,550 642 800 492 451 473 1,410
29 1,240 944 1,460 3,550 3,030 1,510 635 831 498 458 500 1,190
30 1,220   1,520 3,780 2,970 1,450 608 821 536 474 616 1,520
31 1,120   1,470   2,920   587 749   464   1,910