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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 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 -> 2025-09-30)

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 1,490 1,710 2,130 2,350 2,020 1,940 1,010 410 462 570 869 873
2 1,340 1,760 2,200 2,250 1,980 1,970 948 418 459 590 882 904
3 1,650 1,760 2,200 2,210 1,970 2,000 883 444 467 619 882 924
4 2,010 1,830 2,160 2,170 1,990 1,940 843 432 486 632 875 1,030
5 1,900 1,850 2,150 2,150 2,080 1,900 845 419 492 627 850 1,090
6 1,920 1,860 2,210 2,160 2,100 1,790 843 413 485 633 732 1,130
7 1,830 1,860 2,170 2,100 2,100 1,720 859 417 490 663 701 1,180
8 1,790 1,860 2,100 2,100 2,110 1,650 832 412 491 672 702 1,310
9 1,730 1,890 2,160 2,100 2,090 1,590 768 403 493 657 694 1,590
10 1,690 1,910 2,180 2,110 2,100 1,600 766 402 491 668 692 1,310
11 1,650 1,880 2,290 2,120 2,090 1,650 773 399 495 693 700 1,270
12 1,590 1,880 2,240 2,140 2,110 1,710 727 409 493 703 693 1,220
13 1,540 1,860 2,100 2,110 2,040 1,700 690 412 490 703 702 1,200
14 1,520 1,900 2,060 2,130 2,010 1,690 653 406 516 714 710 1,180
15 1,600 1,910 2,010 2,160 1,990 1,630 624 402 526 737 713 1,160
16 1,680 1,980 2,150 2,170 1,980 1,580 637 403 510 798 716 1,190
17 1,690 2,000 2,190 2,120 1,950 1,540 639 416 508 791 723 1,190
18 1,720 1,980 2,170 2,100 2,000 1,490 611 429 509 769 726 1,220
19 1,680 2,080 2,180 2,110 2,050 1,490 579 438 527 766 737 1,230
20 1,680 2,150 2,250 2,100 2,040 1,530 545 443 533 775 800 1,220
21 1,660 2,150 2,220 2,100 2,020 1,570 499 446 529 769 858 1,250
22 1,690 2,210 2,130 2,080 2,050 1,580 485 444 531 764 968 1,280
23 1,750 2,180 2,090 2,100 2,090 1,510 471 441 533 768 918 1,350
24 1,770 2,170 2,010 2,090 2,080 1,490 464 438 535 802 861 1,470
25 1,830 2,220 2,040 2,080 2,060 1,380 456 453 538 826 867 1,660
26 1,890 2,200 2,090 2,090 2,140 1,330 442 459 546 848 847 1,370
27 1,990 2,150 2,110 2,100 2,180 1,210 437 460 550 844 849 1,510
28 1,880 2,140 2,060 2,070 2,140 1,130 442 467 553 856 839 1,560
29 1,800 1,950 2,100 2,090 2,060 1,040 442 477 554 835 843 1,470
30 1,750   2,090 2,090 1,980 1,030 434 480 563 853 855 1,500
31 1,710   2,140   1,950   419 470   871   1,510