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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 11465350 DRY C NR MOUTH NR HEALDSBURG CA


Sonoma County, California
Hydrologic Unit Code 18010110
Latitude  38°35'15", Longitude 122°51'40" NAD27
Drainage area 217  square miles
Gage datum 55.65 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 1981-10-01 -> 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
1 154 297 379 292 117 103 99 89 90 77 102 126
2 139 305 551 276 115 104 98 89 90 78 104 138
3 164 275 524 245 112 100 98 89 89 78 100 150
4 242 293 445 222 112 100 98 90 89 78 100 126
5 278 276 434 224 109 101 98 90 88 78 104 132
6 286 384 543 247 110 99 98 90 88 77 104 155
7 297 547 524 253 112 102 96 90 87 77 108 164
8 556 378 519 227 113 102 97 90 87 77 111 135
9 548 444 601 213 108 103 93 90 88 77 114 130
10 514 389 882 195 105 102 92 91 88 78 112 165
11 441 325 668 172 103 101 92 92 86 78 111 354
12 352 384 572 182 104 102 93 92 85 78 112 218
13 352 572 619 185 105 102 96 93 85 78 112 177
14 451 731 787 175 101 105 96 92 84 80 111 162
15 470 464 578 167 102 103 95 91 85 80 112 270
16 498 360 654 166 107 105 95 91 85 79 110 266
17 519 446 625 166 111 104 95 91 85 79 112 209
18 420 392 589 169 116 101 94 91 85 80 112 186
19 359 380 489 163 124 102 94 92 84 81 132 191
20 330 467 450 149 114 103 94 92 83 82 128 175
21 253 402 446 140 110 101 92 92 84 85 122 173
22 333 344 575 139 112 102 89 91 83 86 116 161
23 252 401 428 137 108 100 89 91 82 84 117 168
24 327 367 430 132 107 99 89 90 81 129 118 169
25 316 325 402 131 107 99 88 91 78 154 117 164
26 322 698 381 132 105 100 88 91 80 107 121 160
27 330 677 406 129 105 98 88 90 80 89 123 187
28 345 397 431 125 106 98 88 90 79 90 119 159
29 328 128 414 123 105 100 89 90 79 93 120 146
30 326   362 121 100 101 89 92 79 102 124 158
31 323   327   102   90 91   101   166