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USGS Daily Statistics for California

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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 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 3,830 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 2020-10-01 -> 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
1 309 158 168 438 1,430 2,250 1,480 283 55 29 120 49
2 210 144 177 533 1,460 2,270 1,520 264 51 30 105 47
3 185 139 170 638 1,510 2,280 1,490 246 87 31 104 49
4 165 194 170 695 1,600 2,340 1,420 255 98 29 111 83
5 215 167 168 658 1,580 2,460 1,370 281 68 26 101 60
6 181 151 166 670 1,600 2,490 1,290 286 58 24 93 56
7 169 151 163 729 1,620 2,170 1,160 220 53 22 100 56
8 174 155 163 791 1,420 1,990 1,100 201 48 21 86 51
9 324 151 159 798 1,260 1,910 1,060 186 46 21 115 56
10 91 150 152 795 1,280 1,940 1,000 167 62 21 125 69
11 89 166 148 812 1,360 1,800 895 157 67 20 128 81
12 94 187 159 831 1,540 1,720 807 166 63 20 126 67
13 104 189 158 772 1,710 1,980 753 171 58 19 120 74
14 103 178 157 655 1,840 1,900 714 174 57 18 109 90
15 101 182 173 576 2,070 1,840 740 163 52 21 104 78
16 99 167 171 647 2,170 1,720 785 147 47 21 101 94
17 120 154 185 746 2,220 1,700 823 153 44 20 93 89
18 109 153 193 845 2,250 1,670 856 145 42 20 89 94
19 108 208 264 965 2,220 1,570 805 128 41 16 94 109
20 108 179 281 1,030 1,990 1,210 744 119 43 15 79 98
21 104 179 270 1,160 1,660 1,050 651 217 44 15 72 90
22 112 163 313 1,290 1,580 1,070 611 180 44 16 67 95
23 106 161 384 1,340 1,600 1,090 546 142 41 17 65 182
24 104 154 406 1,340 1,580 1,150 623 117 36 275 62 154
25 110 151 431 1,220 2,380 1,160 537 104 33 685 56 129
26 102 151 456 1,120 2,360 1,260 431 101 30 222 56 124
27 108 150 453 937 2,350 1,250 401 89 28 196 55 270
28 116 145 468 940 2,510 1,200 359 79 26 195 53 179
29 126 186 424 1,070 2,450 1,180 335 72 25 174 50 148
30 128   416 1,300 2,430 1,340 326 67 25 157 49 284
31 130   400   2,340   296 61   140   576