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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 11453590 POPE C A WALTER SPRINGS CA


Napa County, California
Hydrologic Unit Code 18020162
Latitude  38°38'49.1", Longitude 122°21'56.97" NAD83
Drainage area 40.4  square miles
Gage datum 521.09 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 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
1 121 55 88 67 18 3.1 0. 0. 0. 0. 6.5 10
2 71 257 51 57 18 2.8 0. 0. 0. 0. 12 9.1
3 77 169 39 47 17 2.6 0. 0. 0. 0. 6.8 9.3
4 225 478 39 40 31 2.4 0. 0. 0. 0. 8.9 8.7
5 370 247 80 35 39 1.9 0. 0. 0. 0. 7.8 23
6 146 224 72 32 26 1.5 0. 0. 0. 0. 6 22
7 101 226 66 35 22 1.1 0. 0. 0. 0. 5 14
8 227 102 89 31 19 0.99 0. 0. 0. 0. 4 8.4
9 405 74 155 27 17 0.89 0. 0. 0. 0. 63 9.7
10 256 59 351 24 14 0.8 0. 0. 0. 0. 27 50
11 296 50 126 23 13 0.61 0. 0. 0. 0. 14 33
12 240 44 228 21 13 0.37 0. 0. 0. 0. 8.2 59
13 191 351 234 20 12 0.21 0. 0. 0. 0. 7.9 173
14 372 169 390 20 12 0.16 0. 0. 0. 0. 6.6 464
15 210 85 192 23 10 0.09 0. 0. 0. 0. 5.7 148
16 149 70 126 27 10 0.04 0. 0. 0. 0. 4.5 268
17 98 56 171 21 10 0. 0. 0. 0. 0. 3.9 109
18 78 48 102 16 9.9 0. 0. 0. 0. 0. 3.6 63
19 86 43 105 15 9.4 0. 0. 0. 0. 0. 3.4 39
20 56 39 88 13 8.5 0. 0. 0. 0. 0. 50 29
21 45 34 179 20 7.7 0. 0. 0. 0. 0. 494 28
22 41 30 203 16 7 0. 0. 0. 0. 0. 571 69
23 35 28 103 13 6.6 0. 0. 0. 0. 0. 220 294
24 31 40 75 11 6.2 0. 0. 0. 0. 610 66 131
25 29 36 60 11 6.2 0. 0. 0. 0. 213 33 154
26 27 45 50 10 6.3 0. 0. 0. 0. 38 24 96
27 47 93 46 11 5.8 0. 0. 0. 0. 19 18 400
28 47 138 104 11 5.2 0. 0. 0. 0. 12 18 133
29 29 109 121 9.3 4.7 0. 0. 0. 0. 9 14 247
30 20   95 8.7 4 0. 0. 0.   7.4 12 271
31 19   80   3.6   0. 0.   7.1   260