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


Page Loading - Please Wait...

Click to hideNews Bulletins

USGS Daily Statistics for Texas

Click to hide state-specific text

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 08170500 San Marcos Rv at San Marcos, TX


Hays County, Texas
Hydrologic Unit Code 12100203
Latitude  29°53'20", Longitude  97°56'02" NAD27
Drainage area 48.9  square miles
Contributing drainage area 48.9  square miles
Gage datum 557.67 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 1994-10-01 -> 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
1 175 177 174 176 171 182 187 176 168 161 226 181
2 176 177 175 177 171 182 199 175 167 162 202 181
3 176 180 174 177 171 182 195 175 166 161 197 182
4 176 179 175 177 172 182 191 174 168 161 195 182
5 176 178 175 177 173 184 185 173 168 161 189 181
6 175 178 174 177 172 182 184 173 167 162 183 181
7 175 179 175 177 172 186 183 173 168 161 182 182
8 175 178 175 175 172 182 183 172 167 162 181 182
9 175 178 175 175 171 193 184 171 170 161 181 182
10 175 178 175 174 173 195 183 171 167 160 180 181
11 174 178 174 181 172 188 182 170 169 160 180 181
12 174 178 178 175 174 187 182 170 167 160 179 181
13 177 178 176 174 174 186 181 169 167 161 179 181
14 178 178 176 173 173 186 181 169 168 174 179 181
15 176 178 176 173 174 185 181 169 166 167 188 181
16 176 178 176 172 174 185 180 169 169 164 207 180
17 176 178 176 172 174 186 179 168 168 355 226 179
18 176 177 176 174 174 184 179 167 167 307 199 180
19 176 177 176 173 175 184 179 166 166 208 189 180
20 175 178 177 173 175 184 185 166 168 188 185 179
21 175 177 176 172 175 188 199 166 165 181 190 179
22 178 176 175 171 175 192 190 167 165 178 198 178
23 176 177 175 173 175 186 188 166 164 179 197 178
24 177 176 175 172 177 185 188 167 164 180 192 177
25 181 176 175 173 178 184 187 165 163 173 185 177
26 178 175 175 173 178 183 181 167 180 172 184 177
27 179 175 175 172 181 183 180 167 169 171 183 177
28 178 174 181 172 182 183 178 166 165 170 184 177
29 178 157 178 172 180 183 178 166 164 170 183 177
30 177   177 171 185 186 177 168 162 338 182 176
31 177   176   182   176 168   305   176