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Important for you to know:

  • New to WDFN: see current water conditions throughout the state using the new State Pages. Filter by continuous data type and age of data, view latest values, and link to graphing options to explore the data further. To learn more, read our announcement on the Water Data for the Nation blog.
Important Legacy real-time page

USGS Parameter Group Data Types Start Date End Date
Physical Daily Values, Unit Values 2011-05-19 2024-11-21
n/a Peak Measurements 2012-01-25 2023-04-21
n/a Site Visits 2011-09-30 2024-07-25
n/a USGS Annual Water Data Reports Site 2012-01-01 2023-01-01
Water Data for the Nation inventory

Monitoring location 08171400 is associated with a Stream in Caldwell County, Texas. Current conditions of Discharge, Gage height, and Precipitation are available. Water data back to 2011 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
08171400 n/a
Site name
San Marcos Rv nr Martindale, TX n/a
Site type
Stream
ST
DMS latitude 294956.23 n/a
DMS longitude 0975032.58 n/a
Decimal latitude 29.8322861 n/a
Decimal longitude -97.8423833 n/a
Latitude-longitude method
GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System X
Latitude-longitude accuracy
Level 2 survey-grade GPS C
Latitude-longitude datum
North American Datum of 1983 NAD83
Decimal Latitude-longitude datum North American Datum of 1983 NAD83
District
Texas 48
State
Texas 48
County
Caldwell County 055
Country US n/a
Land net location description n/a
Name of location map Martindale, TX n/a
Scale of location map 24000 n/a
Altitude of Gage/land surface 480.26 feet n/a
Method altitude determined Interpolated from topographic map. M
Altitude accuracy 1 feet n/a
Altitude datum
North American Vertical Datum of 1988 NAVD88
Subbasin hydrologic unit
12100203
Drainage basin
n/a
Topographic setting
Stream channel
C
Flags for instruments at site NNNNYNNNNNNNNNNNNNNNNNNNNNNNNN n/a
Date of first construction
n/a
Date site established or inventoried 20110511 n/a
Drainage area
547 square miles n/a
Contributing drainage area n/a
Time Zone abbreviation CST n/a
Site honors Daylight Saving Time
Y n/a
Data reliability
Data have been checked by the reporting agency. C
Data-other GW files n/a
National aquifer n/a
Local aquifer n/a
Local aquifer type
n/a
Well depth n/a
Hole depth
n/a
Source of depth data n/a
Project number 8653-00170 n/a

Operated in cooperation with:

logo for Guadalupe-Blanco River Authority
Guadalupe-Blanco River Authority