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USGS Surface-Water 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 09471550 SAN PEDRO RIVER NEAR TOMBSTONE, AZ


Cochise County, Arizona
Hydrologic Unit Code 15050202
Latitude  31°45'05.2", Longitude 110°12'04.8" NAD83
Drainage area 1,740  square miles
Contributing drainage area 1,740  square miles
Gage datum 3,787.17 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 1966-10-01 -> 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 33 33 18 14 6.7 1.4 11 251 38 67 8.8 23
2 27 27 23 13 15 1.3 14 134 42 99 8.1 14
3 19 25 25 13 7.5 1.4 9.8 147 50 113 7.8 13
4 16 41 30 13 6.2 4.1 9.9 222 39 44 7.7 13
5 15 51 46 12 5.9 5.5 8 173 48 23 10 12
6 25 36 39 12 5.8 2 16 154 87 24 14 12
7 34 32 30 12 5.4 2.2 33 141 48 18 20 11
8 43 29 25 11 5.2 1.4 33 121 76 155 23 12
9 32 25 23 11 5 1.2 24 202 58 394 15 12
10 24 23 21 11 4.9 1 61 225 75 115 12 11
11 20 22 22 10 4.5 1 68 224 74 38 11 13
12 18 21 23 10 4 0.86 54 210 67 70 10 12
13 18 21 20 10 3.9 1 43 245 76 55 9.9 12
14 17 21 22 9.9 3.8 0.82 33 226 70 19 9.7 14
15 17 20 27 9.7 3.5 0.65 48 198 32 12 9.3 19
16 16 20 25 9.4 3.3 0.57 66 153 18 8.9 9.2 15
17 17 20 21 9.3 3.5 0.46 123 125 18 8.8 9.1 14
18 122 19 19 9.3 3.6 3.9 107 140 83 11 8.9 17
19 39 19 20 9.2 3.3 0.91 107 134 210 20 8.8 159
20 27 19 22 8.7 3.1 0.58 163 110 81 27 9 128
21 23 19 22 8.5 2.7 0.83 74 79 43 14 9 81
22 24 26 20 8.3 2.6 0.85 128 88 61 15 9.5 32
23 23 27 19 7.8 2.5 0.55 113 96 22 175 9.3 27
24 22 22 18 7.8 2.3 8.9 129 115 22 116 9.3 31
25 25 20 17 7.7 2.2 1.8 99 152 25 25 36 19
26 37 19 16 7.4 2.1 0.65 121 99 45 16 17 17
27 44 18 16 7.3 2 3 199 93 37 11 11 17
28 38 18 15 7.2 2.2 3.8 174 78 45 11 36 111
29 28 17 15 7.1 1.7 11 168 71 77 11 82 54
30 25   15 6.9 1.8 16 172 85 26 9.9 57 30
31 28   14   1.7   215 62   9.3   23