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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 08158700 Onion Ck nr Driftwood, TX


Hays County, Texas
Hydrologic Unit Code 12090205
Latitude  30°04'58", Longitude  98°00'27" NAD27
Drainage area 124  square miles
Contributing drainage area 124  square miles
Gage datum 868.52 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 1978-10-01 -> 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 48 44 52 47 30 132 54 14 7.9 7.2 57 34
2 59 42 51 45 30 141 127 15 8.2 7 50 34
3 59 56 51 44 105 105 91 14 7.1 6.2 49 33
4 50 100 117 59 104 124 62 13 6.7 5.8 39 33
5 49 74 63 71 45 89 108 12 7.2 5.4 39 33
6 63 61 59 56 40 143 54 11 7 33 40 31
7 50 54 56 53 59 84 48 11 9.6 9.8 35 31
8 45 51 54 51 96 69 40 10 62 9.6 34 41
9 50 48 55 46 65 148 37 9.7 22 11 36 39
10 48 51 55 44 88 142 35 9.1 13 9.8 32 38
11 45 48 54 48 65 163 33 8.6 11 10 29 43
12 44 47 78 43 46 140 31 8.1 10 17 28 38
13 43 44 60 43 89 150 28 7.4 8.7 32 27 41
14 40 44 62 50 55 114 26 7 7.8 28 32 38
15 41 45 57 40 62 72 24 8 8.8 15 112 45
16 49 43 74 38 61 97 25 14 9.7 25 50 50
17 45 41 61 38 107 58 32 14 11 104 145 44
18 56 42 57 46 64 61 27 11 9.2 53 48 42
19 52 41 55 41 89 55 22 9.5 16 37 40 48
20 49 62 66 37 64 48 26 12 11 31 41 85
21 45 54 60 36 94 57 49 11 9.8 27 38 150
22 49 51 55 35 65 124 26 9.3 21 24 79 138
23 46 82 53 33 59 76 27 8.2 11 67 56 94
24 44 55 51 33 152 61 24 7.4 9.7 37 40 70
25 43 53 49 34 109 59 22 6.9 8.9 53 46 60
26 51 60 55 45 91 60 25 6.6 8.9 37 39 55
27 57 54 59 36 86 56 24 8.6 8.8 33 51 79
28 49 52 57 32 88 51 19 7.7 7.8 29 41 59
29 55 33 53 31 84 48 20 6.5 7.7 29 38 53
30 46   69 31 142 86 17 8 9.1 127 36 49
31 45   54   115   15 8.2   133   56