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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 08181480 Leon Ck at IH 35, San Antonio, TX


Bexar County, Texas
Hydrologic Unit Code 12100302
Latitude  29°19'47", Longitude  98°35'02" NAD27
Drainage area 219  square miles
Contributing drainage area 219  square miles
Gage datum 573.49 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 1984-10-01 -> 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 8.8 12 14 11 88 65 87 7.3 26 8.3 35 8.8
2 9.3 22 12 15 55 84 534 9.3 9.8 10 27 9.6
3 11 38 11 16 20 69 253 13 11 8.7 80 39
4 14 166 75 15 30 173 350 7.4 85 35 23 19
5 9.5 44 34 64 57 91 253 8.1 46 20 27 18
6 12 23 17 24 135 54 281 6.7 40 17 30 11
7 11 17 17 17 26 72 67 30 39 9 13 11
8 9.4 15 13 21 35 30 37 11 151 50 14 16
9 15 13 15 9.6 18 43 28 6.2 162 90 22 14
10 15 14 13 12 16 82 48 6 68 30 13 11
11 12 14 14 13 31 179 23 5 42 22 8.8 9.2
12 11 15 36 11 15 133 14 5.9 26 19 9.1 9.4
13 9.3 12 33 12 49 88 10 8.5 17 28 8.2 13
14 10 13 57 13 50 49 8.9 6.4 21 86 12 9.4
15 23 13 25 14 93 44 34 6.7 23 21 23 13
16 24 11 35 13 42 30 86 96 44 19 111 11
17 15 9.3 32 100 23 35 34 254 55 189 77 9.7
18 25 16 14 47 33 42 27 20 24 493 37 11
19 10 10 12 28 42 41 16 33 14 50 19 46
20 8.9 29 23 15 73 29 14 23 15 40 22 96
21 8.7 15 14 39 41 35 104 19 15 17 13 160
22 33 18 11 12 100 233 39 20 49 39 116 121
23 14 18 10 33 36 164 22 41 24 97 48 33
24 22 24 9.1 47 67 41 51 17 12 137 27 20
25 24 19 8.9 46 322 39 56 15 11 93 17 14
26 25 24 9.4 28 50 26 24 7.9 35 33 13 13
27 44 16 10 13 118 17 24 7.3 16 21 12 13
28 18 14 41 18 45 81 14 6.3 13 14 19 15
29 20 13 25 57 59 119 12 8.8 17 9.8 14 11
30 13   16 29 64 72 10 9.2 11 78 9.6 14
31 14   23   72   8.3 69   31   11