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USGS Daily Statistics for Arizona

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Welcome to the NWIS-Web for the Arizona Water Science Center


The majority of USGS Gaging Stations are funded though a cooperative program between the USGS other interested agencies.
Follow this link for information on the Cooperative Water Program with the USGS.

Arizona Water Science Center Home Page
Colorado Basin River Forecast Center (CBRFC) - provided by the National Weather Service, AHPS. CBRFC on an interactive map.
Threatened and Endangered USGS Gaging Stations in Arizona

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 17 14 6.5 1.4 11 251 38 67 8.8 23
2 27 27 22 13 15 1.3 14 132 43 99 8.1 14
3 19 25 24 13 7.3 1.3 10 144 48 113 7.8 13
4 16 40 30 13 6.1 4 11 217 38 44 7.7 13
5 15 50 45 12 5.8 5.4 7.9 170 47 23 10 12
6 25 36 38 12 5.6 2 16 151 85 24 14 12
7 34 31 29 12 5.3 2.1 32 142 47 18 20 11
8 43 28 25 11 5.1 1.4 33 121 74 155 23 12
9 32 25 22 11 4.9 1.2 23 200 58 394 15 12
10 24 23 20 11 4.8 1 59 221 75 115 12 11
11 20 22 21 10 4.4 0.98 67 220 74 38 11 13
12 18 21 23 10 3.9 0.84 53 206 67 70 10 12
13 18 21 20 9.9 3.8 0.98 42 241 76 55 9.9 12
14 17 21 21 9.7 3.7 0.81 32 221 70 19 9.7 14
15 17 20 26 9.4 3.5 0.64 47 194 32 12 9.3 19
16 16 20 24 9.2 3.2 0.56 68 149 18 8.9 9.2 15
17 17 19 21 9.1 3.4 0.45 123 123 18 8.8 9.1 14
18 120 19 19 9.1 3.5 3.9 104 137 83 11 8.9 17
19 38 19 20 9 3.2 0.89 105 131 210 20 8.8 159
20 26 18 22 8.5 3 0.57 160 107 81 27 9 128
21 23 19 21 8.3 2.6 0.94 75 77 43 14 9 81
22 24 25 19 8.1 2.6 0.91 127 87 61 15 9.5 32
23 23 26 18 7.7 2.4 0.54 111 95 22 175 9.3 27
24 22 22 17 7.6 2.2 8.7 126 118 22 116 9.3 31
25 25 20 17 7.5 2.2 1.7 97 152 25 25 36 19
26 37 18 16 7.3 2 0.64 119 98 45 16 17 17
27 43 18 15 7.2 1.9 3 197 91 37 11 11 17
28 37 18 15 7.1 2.2 3.8 172 76 45 11 36 111
29 28 16 15 6.9 1.7 11 164 69 77 11 82 54
30 24   14 6.7 1.8 15 174 83 26 9.9 57 30
31 27   14   1.6   212 61   9.3   23