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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 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 49 45 53 47 30 132 54 14 7.9 7.2 58 35
2 60 43 53 45 30 141 127 15 8.2 7.2 51 34
3 60 57 52 44 105 105 91 14 7.1 6.3 50 34
4 51 103 119 59 104 124 62 13 6.7 5.9 39 33
5 50 76 65 71 45 89 108 12 7.2 5.5 39 33
6 64 62 60 56 40 143 54 11 7 34 41 32
7 51 55 57 53 59 84 48 11 9.6 10 36 32
8 46 52 55 51 96 69 40 10 62 9.8 35 42
9 51 49 56 46 65 148 37 9.7 22 12 36 40
10 49 52 56 44 88 142 35 9.1 13 10 33 39
11 46 49 55 48 65 163 33 8.6 11 10 30 44
12 45 48 80 43 46 140 31 8.1 10 17 29 39
13 43 45 62 43 89 150 28 7.4 8.7 33 28 42
14 41 45 63 50 55 114 26 7 7.8 28 33 39
15 42 46 58 40 62 72 24 8 8.8 15 114 46
16 50 44 75 38 61 97 25 14 9.7 26 52 51
17 46 42 62 38 107 58 32 14 11 106 148 45
18 57 43 58 46 64 61 27 11 9.2 54 49 43
19 53 42 55 41 89 55 22 9.5 16 38 41 49
20 50 64 66 37 64 48 26 12 11 32 42 87
21 46 55 60 36 94 57 49 11 9.8 28 38 153
22 50 52 55 35 65 124 26 9.3 21 25 80 141
23 47 83 53 33 59 76 27 8.2 11 68 57 96
24 45 57 51 33 152 61 24 7.4 9.7 38 40 71
25 44 54 49 34 109 59 22 6.9 8.9 54 47 61
26 52 62 55 45 91 60 25 6.6 8.9 37 39 56
27 58 55 59 36 86 56 24 8.6 8.8 34 52 81
28 50 53 57 32 88 51 19 7.7 7.8 30 42 61
29 56 33 53 31 84 48 20 6.5 7.7 30 39 54
30 47   69 31 142 86 17 8 9.1 130 37 50
31 45   54   115   15 8.2   136   58