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USGS Daily Statistics for Texas

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Texas Water Dashboard

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

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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 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 NGVD29
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00060, Discharge, cubic feet per second,
Day of
month
Mean of daily mean values for each day for 22 - 23 years of record in, ft3/s   (Calculation Period 1994-10-01 -> 2017-09-30)

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
1 188 187 185 185 177 189 200 191 183 169 251 195
2 187 186 185 185 177 189 218 191 180 171 219 195
3 188 187 185 185 176 189 212 190 179 170 212 196
4 188 187 185 185 176 189 206 189 179 170 210 196
5 187 187 185 186 177 192 199 188 178 170 202 195
6 187 187 185 185 176 190 198 188 177 171 194 195
7 186 188 185 185 176 195 197 187 179 170 193 195
8 186 187 185 184 176 191 197 186 178 171 192 195
9 187 188 183 183 175 206 197 185 177 170 192 196
10 186 187 184 182 177 209 196 185 176 169 191 194
11 185 187 183 182 176 200 196 184 179 169 191 195
12 185 187 188 181 177 198 195 184 178 168 190 194
13 189 187 184 181 177 198 194 183 177 169 190 194
14 190 188 184 180 178 197 194 183 178 168 190 194
15 189 187 184 179 178 196 194 183 176 167 203 195
16 189 187 184 179 178 196 194 183 180 167 228 193
17 188 187 184 179 178 196 193 182 178 427 253 192
18 189 187 184 180 177 195 192 181 177 362 217 192
19 188 187 184 180 178 194 191 181 176 229 204 191
20 188 188 186 181 178 195 199 181 179 201 198 191
21 187 187 184 179 179 201 222 181 175 192 205 191
22 188 186 184 177 178 206 209 182 174 188 216 190
23 187 187 184 181 178 197 206 182 174 189 214 191
24 187 186 184 179 180 196 207 182 173 189 208 190
25 191 186 184 181 181 196 204 181 173 180 200 190
26 188 186 184 181 182 195 197 180 194 177 198 190
27 189 186 184 179 186 195 195 180 180 176 197 189
28 188 185 185 178 187 194 194 180 174 176 198 190
29 188 159 186 178 187 195 193 179 174 176 197 189
30 187   185 177 193 199 192 182 172 401 196 189
31 187   185   189   192 183   358   188