smwi-logoThe San Marcos Watershed Initiative is a multi-year research and information gathering process with the end goal to create and implement a community-based and state/federally accepted Watershed Protection Plan (WPP) for the Upper San Marcos River.

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Vision Statement

A healthy watershed that supports a clean, clear, and flowing San Marcos River for the future as it was in the past.

Upcoming Events!

Featured Event

City to Give Away Free Trees in Celebration of Arbor Day

In celebration of Texas Arbor Day, the City of San Marcos Electric Utility will give away free trees to San Marcos electric utility customers on Friday, Nov. 3.

The trees will be distributed on a first come, first served basis at the San Marcos Library, located at 625 E Hopkins, from 10 a.m. to 1 p.m. Customers must present a driver’s license with a San Marcos address along with a current San Marcos electric utility bill in order to claim their free tree. (Read More. ..)

Hello Upper San Marcos Residents! 


The Initiative

In 2010, the Upper San Marcos River was cited on Texas Commission on Environmental Quality’s 303(d) list of impaired waterways, for exceeding total dissolved solids (TDS) water quality standards. The River is currently in compliance with the Clean Water Act Standards, but several pollutants have been identified as a concern.

The San Marcos Watershed Initiative (SMWI) began in 2012 as a multi-year process of research and information gathering with the end goal of implementing a community approved and federally accepted Watershed Protection Plan for the Upper San Marcos River. Read more.

smwatershedinitiative.org | smwatershed@txstate.edu

meadows-vertical-txstate-blue-goldThe Meadows Center for Water and the Environment
Texas State University
601 University Drive
San Marcos, TX 78666

The preparation of this website was financed through grants from the U.S. Environmental Protection Agency through the Texas Commission on Environmental Quality