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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 11274790 TUOLUMNE R A GRAND CYN OF TUOLUMNE AB HETCH HETCHY


Tuolumne County, California
Hydrologic Unit Code 18040009
Latitude  37°55'00", Longitude 119°39'32" NAD27
Drainage area 301  square miles
Gage datum 3,813.65 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 2006-10-01 -> 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
1 149 163 213 471 1,350 1,720 1,130 263 58 26 131 87
2 129 178 251 515 1,400 1,800 1,130 239 54 25 126 120
3 120 176 237 539 1,470 1,880 1,130 219 60 26 108 112
4 138 176 239 568 1,560 1,990 1,090 209 62 32 103 105
5 152 168 258 578 1,570 2,090 1,040 209 54 37 93 103
6 134 169 283 641 1,560 2,080 983 208 52 35 88 104
7 145 222 255 885 1,540 1,970 937 178 49 31 91 94
8 260 279 237 824 1,540 1,850 880 166 47 32 89 94
9 285 288 238 759 1,570 1,800 834 154 44 32 96 105
10 173 264 239 698 1,620 1,820 777 142 45 33 99 126
11 162 232 245 684 1,690 1,650 714 133 45 43 93 132
12 146 215 256 691 1,750 1,550 666 128 51 40 92 115
13 145 219 291 705 1,740 1,630 646 126 50 48 92 112
14 139 266 304 685 1,790 1,640 607 125 50 84 98 113
15 139 225 309 662 1,860 1,710 606 121 46 53 95 133
16 142 212 346 668 1,870 1,680 583 113 42 80 121 142
17 164 212 348 733 1,840 1,660 577 111 39 85 130 117
18 149 213 353 843 1,790 1,700 549 105 36 76 103 128
19 153 210 371 906 1,740 1,710 512 100 33 75 95 150
20 146 217 386 968 1,700 1,640 476 97 32 65 88 122
21 157 212 408 1,010 1,610 1,580 455 117 39 60 90 121
22 168 202 447 1,100 1,540 1,540 426 103 40 56 91 139
23 174 198 393 1,160 1,510 1,510 406 96 37 53 92 143
24 177 196 383 1,180 1,470 1,420 425 91 36 232 87 134
25 165 196 387 1,160 1,670 1,330 408 86 34 347 83 125
26 157 198 388 1,210 1,650 1,330 373 82 31 120 82 120
27 157 211 393 1,220 1,650 1,280 330 76 29 107 91 149
28 154 209 409 1,260 1,710 1,210 298 74 27 173 91 128
29 157 214 408 1,290 1,690 1,170 288 70 26 136 88 121
30 178   439 1,320 1,750 1,120 294 65 26 161 96 149
31 164   455   1,770   288 63   133   209