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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 08437710 Pecos Rv at RR 1776 nr Grandfalls, TX


Ward County, Texas
Hydrologic Unit Code 13070001
Latitude  31°22'00", Longitude 103°00'20" NAD27
Drainage area 34,740  square miles
Contributing drainage area 27,685  square miles
Gage datum 2,440 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 2006-10-01 -> 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 9.5 7 11 16 13 12 7 13 9.2 25 13 15
2 9.8 6.9 12 15 13 12 13 11 8.2 20 12 15
3 9.9 7 12 15 13 12 18 12 8.1 18 21 15
4 9.8 6.9 12 15 14 13 14 9.1 12 19 20 15
5 9.6 6.8 13 17 13 12 11 11 13 21 21 15
6 9.6 6.7 12 18 14 12 8.9 11 12 23 20 15
7 9.6 6.7 10 18 14 12 11 16 11 23 19 15
8 9.2 6.5 9.2 17 14 12 9.8 11 10 23 19 15
9 12 6.5 8.9 16 14 11 9.7 9.7 11 26 19 16
10 7.8 15 8.7 17 13 10 10 9.4 13 23 19 15
11 7.9 13 9.4 17 13 9.1 10 9.4 8.9 13 19 14
12 7.9 13 14 17 15 9.7 10 9.6 13 12 19 13
13 7.8 12 16 17 15 10 11 11 11 11 18 12
14 7.8 13 17 17 14 9.2 10 13 11 22 17 12
15 7.8 14 17 16 13 11 8 13 14 21 16 12
16 7.7 13 18 16 14 11 7.1 11 12 21 15 11
17 7.7 13 18 16 15 9.3 6.4 8.4 11 20 18 11
18 7.6 14 19 16 13 13 6.7 10 11 20 19 11
19 7.5 15 20 16 10 12 8.3 18 10 22 19 11
20 7.5 14 8.1 15 10 12 9.3 11 9.3 24 18 11
21 7.5 12 7.4 15 15 12 9.3 8.5 9.6 22 17 11
22 7.7 12 7.3 14 12 14 9.5 8.2 11 20 19 10
23 7.8 12 7.3 14 12 13 11 8 12 19 20 10
24 7.5 12 8 15 11 12 9.7 8.6 11 18 20 10
25 7.3 11 7.6 14 11 12 9 8.4 13 17 19 10
26 7.2 11 7.1 13 12 13 7.9 9 13 16 18 10
27 7.2 11 18 12 11 13 7.8 8.3 12 15 17 10
28 7.3 10 17 11 10 12 9.9 7.9 13 17 16 10
29 7.1 14 17 12 9.7 11 9.6 8.7 14 15 15 10
30 7   18 13 9.9 9.9 10 11 14 14 15 9.9
31 7.1   17   13   11 12   13   9.8