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USGS Surface-Water 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 11264500 MERCED R A HAPPY ISLES BRIDGE NR YOSEMITE CA


Mariposa County, California
Hydrologic Unit Code 18040008
Latitude  37°43'53", Longitude 119°33'29" NAD27
Drainage area 181  square miles
Gage datum 4,030 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 1915-10-01 -> 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
1 105 120 129 312 957 1,390 809 220 51 47 48 55
2 158 103 133 324 984 1,390 798 199 47 47 51 60
3 128 94 133 335 1,020 1,400 760 186 46 37 49 89
4 91 93 137 350 1,060 1,420 720 172 48 32 45 68
5 85 103 139 368 1,100 1,440 702 169 68 31 44 64
6 79 102 142 383 1,120 1,440 686 164 72 29 46 81
7 78 107 143 441 1,110 1,400 659 152 57 29 44 78
8 92 116 157 440 1,120 1,380 623 143 52 30 50 73
9 102 117 166 434 1,130 1,370 593 137 46 29 50 64
10 89 111 175 439 1,120 1,350 553 135 48 28 51 70
11 89 106 173 481 1,140 1,330 518 123 44 32 64 113
12 91 106 169 486 1,190 1,300 500 118 42 30 62 79
13 98 109 176 500 1,230 1,290 493 110 36 29 52 65
14 91 118 180 516 1,280 1,290 485 106 36 31 55 63
15 89 118 185 538 1,300 1,280 467 109 35 31 56 65
16 93 125 193 549 1,370 1,270 457 109 31 36 54 67
17 92 122 208 565 1,360 1,220 439 103 29 38 61 61
18 92 128 216 579 1,380 1,190 409 96 29 34 92 60
19 92 131 218 588 1,370 1,180 393 87 36 32 106 65
20 88 124 228 622 1,380 1,170 377 79 30 31 97 68
21 95 119 234 666 1,390 1,130 365 76 28 30 90 67
22 96 116 244 706 1,380 1,120 344 74 28 28 72 99
23 94 114 244 723 1,410 1,080 332 72 28 29 64 203
24 92 115 250 734 1,420 1,030 314 70 30 38 65 143
25 95 117 263 750 1,440 980 307 67 38 78 59 102
26 95 117 266 779 1,450 949 300 63 51 56 57 88
27 90 122 268 813 1,460 929 280 58 32 46 55 86
28 87 131 272 853 1,470 900 261 56 33 56 56 81
29 86 125 278 872 1,440 861 251 54 43 49 58 80
30 87   287 908 1,390 828 246 51 38 73 57 84
31 98   300   1,400   237 53   55   97