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USGS Daily Statistics for the Nation

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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 11290000 TUOLUMNE R A MODESTO CA


Stanislaus County, California
Hydrologic Unit Code 18040009
Latitude  37°37'38", Longitude 120°59'00" NAD27
Drainage area 1,884  square miles
Gage datum 2.46 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 1939-10-01 -> 2026-09-30)

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 1,480 1,690 2,110 2,320 2,010 1,920 1,000 406 458 565 861 865
2 1,330 1,740 2,180 2,230 1,970 1,950 938 415 455 586 874 895
3 1,640 1,740 2,180 2,190 1,960 1,980 874 440 464 614 874 924
4 1,990 1,810 2,140 2,150 1,980 1,920 834 428 483 627 868 1,030
5 1,880 1,830 2,130 2,130 2,060 1,880 837 416 488 622 842 1,090
6 1,900 1,840 2,180 2,140 2,090 1,770 835 410 481 628 726 1,130
7 1,820 1,850 2,150 2,080 2,090 1,710 850 413 487 658 695 1,180
8 1,770 1,840 2,080 2,080 2,090 1,630 823 408 487 666 696 1,310
9 1,710 1,870 2,130 2,080 2,080 1,570 761 400 489 652 688 1,570
10 1,680 1,890 2,160 2,090 2,090 1,580 759 399 488 663 687 1,300
11 1,630 1,860 2,270 2,100 2,070 1,630 765 396 491 688 694 1,260
12 1,570 1,870 2,220 2,120 2,090 1,690 720 406 489 698 687 1,210
13 1,530 1,840 2,080 2,090 2,020 1,680 684 409 487 698 696 1,190
14 1,510 1,890 2,040 2,110 1,990 1,670 647 403 512 709 705 1,170
15 1,580 1,900 1,990 2,140 1,970 1,610 619 398 522 732 707 1,150
16 1,660 1,960 2,140 2,150 1,960 1,560 631 399 506 795 712 1,180
17 1,670 1,980 2,170 2,100 1,940 1,520 633 412 505 790 720 1,180
18 1,710 1,960 2,160 2,080 1,980 1,470 605 425 506 771 730 1,210
19 1,660 2,060 2,170 2,090 2,030 1,480 574 434 523 768 740 1,220
20 1,670 2,130 2,230 2,080 2,020 1,510 540 439 529 774 795 1,210
21 1,650 2,130 2,200 2,080 2,000 1,550 494 442 525 768 852 1,240
22 1,670 2,190 2,110 2,070 2,030 1,560 481 440 527 765 959 1,270
23 1,730 2,160 2,070 2,090 2,070 1,490 467 437 530 770 910 1,330
24 1,760 2,150 1,990 2,070 2,060 1,470 460 434 531 802 853 1,460
25 1,810 2,200 2,020 2,060 2,040 1,370 452 449 534 824 859 1,650
26 1,870 2,180 2,070 2,070 2,120 1,320 438 455 542 843 839 1,360
27 1,970 2,130 2,090 2,090 2,160 1,190 434 456 546 837 842 1,490
28 1,860 2,120 2,040 2,050 2,120 1,120 439 463 549 849 831 1,540
29 1,780 1,950 2,080 2,070 2,040 1,030 438 473 550 828 835 1,460
30 1,730   2,070 2,070 1,960 1,020 430 476 559 845 847 1,490
31 1,690   2,120   1,930   415 465   864   1,500