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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 11525500 TRINITY R A LEWISTON CA


Trinity County, California
Hydrologic Unit Code 18010211
Latitude  40°43'29", Longitude 122°48'04" NAD83
Drainage area 719  square miles
Gage datum 1,830 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 1961-10-01 -> 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
1 484 518 577 624 1,480 1,450 711 403 484 358 292 311
2 480 503 598 598 1,590 1,400 695 393 506 358 293 314
3 478 482 598 594 1,580 1,350 684 390 488 358 292 313
4 479 456 611 593 1,660 1,300 668 384 490 358 293 312
5 485 462 630 601 1,730 1,270 659 381 493 359 294 311
6 494 463 634 617 1,860 1,260 649 382 493 358 293 311
7 502 449 636 595 1,850 1,240 638 382 467 357 293 309
8 490 454 659 560 1,830 1,190 624 384 453 356 294 307
9 483 457 655 552 1,830 1,170 618 383 474 354 294 308
10 504 466 605 576 1,870 1,170 600 384 471 354 294 305
11 508 458 584 578 1,830 1,200 583 382 452 354 301 300
12 537 431 562 602 1,820 1,220 563 379 448 354 308 297
13 555 452 562 641 1,850 1,210 541 387 456 354 308 303
14 530 538 541 704 1,860 1,200 504 390 442 349 305 321
15 506 528 550 773 1,850 1,170 489 391 431 339 300 328
16 559 502 584 838 1,810 1,110 487 394 433 309 298 332
17 648 518 590 975 1,770 1,030 481 423 463 294 299 333
18 679 524 583 951 1,730 952 465 414 463 291 300 333
19 694 516 581 902 1,750 919 461 403 443 291 306 341
20 691 539 609 891 1,640 899 449 406 435 290 309 391
21 675 545 613 975 1,590 879 437 450 434 290 310 391
22 666 572 590 989 1,590 875 425 443 418 289 310 388
23 629 623 562 1,020 1,580 851 423 456 388 289 309 384
24 577 655 538 1,020 1,570 831 426 476 376 289 307 381
25 595 657 559 1,030 1,520 810 429 499 374 289 307 381
26 578 630 587 1,140 1,500 805 428 532 373 290 316 382
27 583 590 591 1,240 1,470 792 437 546 371 291 315 398
28 574 571 616 1,330 1,520 763 439 523 366 291 312 424
29 522 888 642 1,440 1,520 734 428 526 363 290 313 454
30 508   703 1,430 1,490 717 416 497 363 289 312 477
31 518   660   1,470   407 487   290   471