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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 11467553 NF GUALALA R AB SF GUALALA R NR GUALALA CA


Mendocino County, California
Hydrologic Unit Code 18010109
Latitude  38°47'24", Longitude 123°30'30" NAD27
Drainage area 47.1  square miles
Gage datum 20 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 2000-10-01 -> 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
1 384 161 176 210 81 30 14 7.2 4.6 4.1 27 80
2 250 157 181 174 67 29 14 7.1 4.6 4.5 23 55
3 200 142 221 201 60 28 13 7 4.6 4.8 17 39
4 209 112 239 195 57 28 13 6.9 4.5 4.9 18 48
5 157 101 333 163 52 28 12 6.8 4.6 6.7 16 40
6 133 95 307 141 48 27 12 6.8 4.6 5.1 15 59
7 110 119 220 154 45 25 12 6.7 4.6 4.6 34 92
8 129 109 179 155 46 28 12 6.5 4.5 4.2 30 264
9 124 130 140 147 48 30 11 6.4 4.6 4.1 19 80
10 126 122 135 137 45 25 11 6.3 4.4 4.9 31 81
11 151 122 121 164 41 23 11 6.2 4.4 5.6 24 63
12 147 114 108 297 39 22 11 6.1 4.4 4.9 19 68
13 250 101 126 230 37 21 10 6 4.3 7.8 17 140
14 229 109 188 181 36 20 10 5.9 4.4 7.7 15 296
15 176 117 305 161 35 20 10 5.7 4.3 6.1 15 127
16 153 114 185 160 34 20 9.9 5.6 4.4 6 16 607
17 147 89 178 139 34 21 9.7 5.6 4.3 5.6 16 87
18 164 87 155 124 205 21 9.5 5.6 5.1 5.6 17 102
19 147 107 169 111 126 20 9.6 5.9 5.5 7.7 16 150
20 137 229 152 104 66 19 9.4 5.9 4.8 6.5 36 178
21 129 197 133 101 51 18 9.3 5.9 4.6 5.7 34 212
22 156 153 187 89 44 17 9 5.8 4.3 5.9 35 254
23 169 136 209 81 39 17 8.7 5.6 4.2 11 43 156
24 151 121 190 105 52 16 8.5 5.6 4.4 6.6 46 117
25 153 147 171 93 47 17 8.3 5.5 4.6 8 30 95
26 185 125 157 83 43 16 8.2 5.4 4.6 17 34 162
27 178 180 154 94 42 18 8.2 5.2 4.4 23 45 431
28 175 228 174 114 40 17 8 5.2 4.3 29 42 897
29 175 120 161 134 36 16 7.9 5.1 4.4 18 48 361
30 168   148 110 34 15 7.6 5 4.3 26 39 374
31 149   171   32   7.4 4.7   27   935