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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 11466200 SANTA ROSA C A SANTA ROSA CA


Sonoma County, California
Hydrologic Unit Code 18010110
Latitude  38°26'12", Longitude 122°43'25" NAD27
Drainage area 57.0  square miles
Gage datum 102.43 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
1 214 117 183 134 54 8.2 4.2 4 2.4 0.93 15 133
2 242 175 209 97 58 7.8 4.3 4 2.3 4.3 10 151
3 165 172 181 100 144 7.5 4.1 4 2.2 2.5 9.1 64
4 252 260 118 207 71 7.1 1.4 4 2.2 2.5 6.5 32
5 211 173 150 118 52 7.2 1.2 4 2.1 5.5 5.5 54
6 211 167 212 105 39 6.8 1.2 3.9 2 1.6 5.4 77
7 153 209 134 115 34 6.5 1.2 3.9 2.2 1.1 23 53
8 281 228 89 74 30 6 1 3.8 2.6 0.96 25 36
9 276 339 115 56 29 5.6 1.1 3.7 2.3 1.1 23 35
10 234 225 203 77 24 5.4 1.1 3.6 2.1 5.5 12 68
11 155 124 128 80 24 5.5 1.1 3.6 2 1.5 15 148
12 115 86 112 110 23 3 1.1 3.7 2.1 5.1 24 93
13 156 212 144 88 26 3 1.1 3.7 2.1 15 13 142
14 163 183 195 58 23 5.7 1 3.9 2.2 2.7 7.9 229
15 124 142 160 45 21 5.6 1 3.8 2.2 3.4 8 208
16 137 226 149 60 20 5.7 0.95 3.6 2.2 2.8 13 221
17 122 281 108 41 19 5.7 1 3.8 2.2 2.3 12 130
18 152 210 83 37 16 5.8 1 3.7 2.2 1.3 12 150
19 182 178 101 32 19 5.7 1 3.7 2.1 2.2 19 164
20 201 176 129 35 29 5.6 1 3.7 2.1 2.2 64 174
21 189 114 110 33 19 5.6 0.75 3.1 2.2 1.9 158 233
22 225 138 168 34 16 5.3 0.75 2.4 2.3 9.6 153 214
23 189 106 103 25 14 5.3 0.6 2.5 2 6.4 72 226
24 117 135 130 31 13 5.3 0.55 2.5 2.1 187 54 214
25 230 173 125 30 13 5.2 0.55 2.5 2.2 79 23 213
26 176 349 119 25 12 5.7 0.6 0.3 2.3 26 25 185
27 102 454 108 23 12 5.2 0.5 0.3 2.4 8 20 241
28 72 320 134 34 12 4.8 0.45 0.3 2.5 11 43 239
29 61 203 184 34 11 4.5 0.5 0.3 2.7 7.5 78 283
30 62   282 26 12 4.4 0.5 0.3 4 12 88 249
31 84   167   11   4 0.35   8.1   349