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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 Event!

Hello Upper San Marcos Residents! 

Stimulated by Wes Ferguson’s recent book, “The Blanco River”, one wonders how we will live in the heart of the Hill Country with its karst geology, drought, and floods facing unprecedented population growth.  Our neighbors in the Trinity Aquifer Neighborhood (TAN) are also facing similar water related problems/opportunity.  Where will our water come from?  How can we use it more effectively and efficiently? What will we do with it after we use it? 

Join us July 13th from 9 AM – 2:30 PM at Johnson Hall at the Wimberley Community Center. The BROC forum covers the Blanco and Hays County parts of the Blanco River and adjacent Onion Creek basins including Blanco, Wimberley, Woodcreek, Dripping Springs and unincorporated county land. 


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
MeadowsWater.org

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