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USGS Daily Statistics for Texas

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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 08185000 Cibolo Ck at Selma, TX


Bexar County, Texas
Hydrologic Unit Code 12100304
Latitude  29°35'38", Longitude  98°18'39" NAD27
Drainage area 274  square miles
Contributing drainage area 274  square miles
Gage datum 728.34 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 1977-10-01 -> 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 2 3.3 1.7 6.3 0.63 34 14 5.4 69 0.04 14 4
2 1.6 3.5 1.4 3.1 0.23 44 440 3.9 8.6 2 13 3.4
3 0.68 17 1.4 2.3 1.5 36 294 2.9 4.4 0.19 27 5.1
4 0.6 175 145 1.5 1.4 222 281 2.3 14 50 6.4 3
5 0.17 57 39 45 37 73 287 1.8 1.1 4 2.7 2.5
6 0. 35 24 3.9 13 234 98 1.3 8.2 0.46 35 1.9
7 0. 23 17 1.8 1.3 65 47 0.91 9.6 0.14 9 1.6
8 0. 17 14 0.54 0.51 26 35 0.55 18 0.32 3.7 1.4
9 0.01 13 13 0.21 0.03 100 29 1.1 130 1.5 2.2 1.1
10 0.14 10 10 0.06 0.01 52 24 0.27 28 0.27 0.8 0.8
11 0.2 8.6 8.7 0.01 0.01 84 21 0.04 7.6 0.12 0.15 0.55
12 0.01 7.2 38 0. 0.01 74 17 0.01 2.9 0.32 0.06 0.33
13 0.19 5.8 11 0. 9.1 46 11 0. 9.7 2.3 0.03 0.17
14 0.04 4.9 7.7 0. 13 85 8.8 0. 0.45 21 0.02 0.11
15 0.55 4.1 6 0. 4.8 87 18 0. 0.56 4.2 32 0.08
16 0.34 3.3 67 0. 7.1 85 12 0.68 0.34 0.45 125 0.06
17 0.05 2.7 28 0.14 1.7 43 12 259 2 667 163 0.04
18 0.62 2.7 17 0.15 65 27 14 42 1.8 376 56 0.03
19 0.1 1.7 9.2 7 69 22 8.8 28 0.48 27 30 6.3
20 0.02 1.3 6 1.5 65 14 10 23 0.12 17 18 101
21 0. 0.83 39 0.8 19 12 120 17 0.08 9.5 11 345
22 0.8 2.9 17 3.3 240 541 51 11 28 6.6 168 157
23 0.12 1.2 14 1.4 32 191 20 7.1 12 4.5 59 77
24 0.77 1.6 7.9 1.5 206 68 15 5.3 4.6 34 25 44
25 2 6.5 6 1.2 94 49 26 4.2 2.6 19 14 31
26 1.1 5.2 4.7 0.24 34 39 16 3.4 3.6 6.7 11 20
27 19 3.3 5.1 0.05 26 30 17 2.7 1.5 3.5 9.1 16
28 10 2.6 5.7 0.01 67 52 11 2.1 0.31 2 6.9 11
29 7 8.3 5.1 0.57 34 57 10 1.7 1.2 1 5.8 7.2
30 5.4   5.4 0.65 37 19 7.9 2.2 0.09 226 4.9 4.9
31 4.3   11   37   5.8 36   100   2.8