Warning: Javascript must be enabled to use all the features on this page!


Page Loading - Please Wait...

* We've detected you're using a mobile device. Find our Next Generation Station Page here.
Click to hideNews Bulletins

USGS Daily Statistics for Texas

Click to hide state-specific text

Explore Real-time Water Data Using New Products from USGS TXWSC

View over 750 USGS real-time stream, lake, reservoir, precipitation, and groundwater stations in context with current weather and hazard conditions on both desktop and mobile devices.

Click to go to the Texas Water Dashboard Click to go to the WATER On-the-go app

Follow @USGS_TexasFlood and @USGS_TexasRain on Twitter to get current water level and precipitation data during flooding or severe rainfall events.


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 08171350 Blanco Rv at San Marcos, TX


Hays County, Texas
Hydrologic Unit Code 12100203
Latitude  29°52'46.24", Longitude  97°54'38.71" NAD83
Drainage area 436.0  square miles
Gage datum 542.97 feet above NAVD88
Output formats
HTML table of all data
Tab-separated data
Reselect output format

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 2014-10-01 -> 2021-09-30)

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 90 81 60 55 113 863 114 17 54 41 302 49
2 122 78 57 68 96 935 104 14 49 40 164 46
3 289 70 56 64 110 829 99 8.9 48 39 117 59
4 204 73 55 70 732 687 94 6.2 35 39 98 70
5 157 74 61 86 258 613 88 5.6 30 34 88 75
6 133 70 59 76 178 529 82 5.1 28 33 83 78
7 124 67 58 80 158 466 78 5.2 26 31 87 89
8 116 60 57 69 511 422 75 4.5 22 29 92 132
9 106 65 58 58 858 381 74 4 122 28 95 108
10 101 60 75 49 344 347 71 3.8 114 27 92 99
11 98 56 76 58 281 309 67 3.5 50 26 91 95
12 99 56 77 172 338 281 64 3.3 32 25 85 92
13 96 54 76 83 379 256 62 3 14 25 81 104
14 92 56 79 72 380 294 60 3.4 7.6 23 70 120
15 88 60 73 64 304 267 58 14 6.4 21 65 105
16 104 57 72 57 397 217 56 95 5.6 34 61 96
17 121 55 71 57 928 198 53 78 18 60 61 94
18 142 53 70 114 834 183 50 63 26 50 57 86
19 149 52 74 107 924 188 45 43 10 45 54 92
20 133 142 71 102 722 183 38 37 6.1 49 46 84
21 121 125 70 82 433 172 33 60 5.1 49 39 80
22 97 86 68 122 382 210 32 54 42 44 36 78
23 101 81 75 92 347 180 31 49 65 43 35 76
24 103 77 79 80 10,100 156 30 42 45 45 35 77
25 97 66 76 113 1,370 156 29 38 37 58 32 73
26 91 65 69 124 2,280 144 35 47 217 63 32 73
27 90 64 65 123 816 141 47 136 135 48 33 172
28 90 61 126 119 763 149 38 116 64 44 34 177
29 90 7.3 126 111 966 171 26 76 50 41 53 112
30 85   97 115 715 131 23 67 44 8,090 56 100
31 82   81   753   21 59   751   97