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The Environment




The Environmental Flows Allocation Process

Water is the lifeblood of our Texas landscapes. Texas rivers provide water and habitat for fish and wildlife throughout the state and provide the freshwater to coastal estuaries that keeps them functioning and healthy.

Unfortunately, we haven't done a very good job of protecting our rivers. Most water use permits were issued without any consideration of how much flow should be left in rivers to protect water quality, fish and wildlife, and human recreational activities. With our population continuing to boom, and more and more water being withdrawn from our rivers to meet increasing demands, this has left the future health of our rivers and bays at risk.

But times are changing and there is a new opportunity to correct this shortfall. Recently the Texas Legislature took actions to formally recognize the importance of our natural heritage and the economic engine that healthy river and bay systems support. In 2007 a new state law was passed that finally lays out a comprehensive approach to addressing the issue of environmental flow protection that is so critical to Texas' water resources and all who depend on them.

The new Environmental Flows Allocation Process addresses a contentious issue of long standing in Texas: How to ensure that enough water continues to flow in our rivers and streams and into our coastal bay systems to keep them healthy and productive for current and future generations of Texans. The process will address two key issues: determining how much flow is needed to maintain a sound ecological environment, and how to go about ensuring that flow is protected.

The Process

On September 1, 2007, Senate Bill 3 and House Bill 3 took effect, beginning the Environmental Flows Allocation Process. At first take, the route created to reach the final goals of the process may seem complicated, but determining how much water each of Texas' unique systems needs and when, and how to go about protecting that water is no small undertaking. Care must be taken to ensure the effective participation of all interested parties so that we arrive at the end of the process with meaningful results that everyone can stand behind.

The process begins by creating two new statewide groups. The first is the Environmental Flows Advisory Group whose members were appointed by the governor, lt. governor and speaker of the house. The Environmental Flows Advisory Group then appoints members to the Texas Environmental Flows Science Advisory Committee.

Texas basins map    A. Sabine & Neches Rivers/Sabine Lake Bay Area (lt green)
B. Trinity & San Jacinto Rivers/Galveston Bay Area (grey)
C. Brazos River/Bay & Estuary Area (blue)
D. Colorado & Lavaca Rivers/Matagorda & Lavaca Bays Area (yellow)
E. Guadalupe, San Antonio, Mission, & Aransas Rivers/Mission, Copano, Aransas & San Antonio Bays Area (aqua)
F. Nueces River/Corpus Christi & Baffin Bays Area (dk green)
G. Rio Grande/Rio Grande Estuary & the Lower Laguna Madre Area (tan)




A B C D E F G Next, the Environmental Flows Advisory Group will divide the state into seven areas*-one for each of the seven major bay systems of Texas and the associated river basins that feed each of these bay systems. Seven Bay/Basin Stakeholder Groups and seven Bay/Basin Expert Science Teams will then be formed-one pair for each area depicted on the map. The Environmental Flows Advisory Group will appoint members to the Stakeholder Groups, and the Stakeholder Groups will then create their area's Science Team.

Then the Science Teams will have one year to answer the question of how much flow is needed. They will use the best available science to develop recommendations for an environmental flow regime to protect a sound ecological environment. The Science Team then submits these recommendations to the Bay/Basin Stakeholder Group. These recommendations are solely science-based.

* Map is preliminary. The exact geographical extent of these areas is yet to be determined.

Each Stakeholder Group will then take their science team's recommended environmental flow regime and add their associated policy considerations, and strategies to meet the flow recommendations into the mix to answer the question of how to ensure that flow is protected. The Stakeholder Group submits its comments and recommendations to the Texas Commission on Environmental Quality. These are a composite of science- and policy-based recommendations.

Bay/Basin Stakeholder Groups, with assistance from their Bay/Basin Science Team, will also prepare and submits a work plan to address adaptive management issues, such as periodic review of the bay/basin environmental flow analyses, regime recommendations, and standards and strategies to meet those standards.

The final step in the process is for both the Science Team recommendations and the Stakeholder Group recommendations to be forwarded to the Texas Commission on Environmental Quality (TCEQ). Through a public rulemaking process, the TCEQ will then use these recommendations to legally adopt environmental flow standards-the goals for flows in the river and inflows to the associated bay system.

Rather than take on determining environmental flow standards and recommendations for the whole state at once, the process unfolds gradually, starting with:
  • the first two areas in 2007
    1. Sabine & Neches Rivers/Sabine Lake Bay Area
    2. Trinity & San Jacinto Rivers/Galveston Bay Area
  • the next two areas in 2008
    1. Colorado & Lavaca Rivers/Matagorda & Lavaca Bays Area
    2. Guadalupe, San Antonio, Mission, & Aransas Rivers/Mission, Copano, Aransas & San Antonio Bays Area
  • and the remaining three areas in 2009
    1. Nueces River/Corpus Christi & Baffin Bays Area
    2. Rio Grande/Rio Grande Estuary & the Lower Laguna Madre Area
    3. Brazos River/Bay & Estuary Area
    For more information specific to each area, such as a more detailed map of that area and a timeline of events specific to each, click on that area of the statewide map.

    For a print-friendly 2- page handout describing the importance and siginificance of the environmental flows legislation, click here.

    For a print-friendly page describing the players and the process, click here.

    What You Can Do

    To realize the full potential of this new process, it will require valuable participation from scores of people who care about the future of Texas' rivers and bays. Please consider how you might be a part of this precedent-setting new effort.

    • Serve on a Bay/Basin Stakeholder Group
      • Click here to find out more about these groups, what's involved in serving, and the nomination process. You can even fill out an online form to put your name in the pot of potential candidates.
    • Serve on a Bay/Basin Expert Science Team
      • Click here to find out more about these teams, what's involved in serving, and the nomination process. You can even fill out an online form to express your interest in being considered as a science team/s candidate.
    • Stay abreast of the process
      • Click here to add your name to the list of people interested in learning about new developments in the Environmental Flows Allocation Process as it unfolds.
    • Attend a free Coastal Forum on the Environmental Flows Allocation Process
      • Click here for details on Bay City Forum, May 20, 2008 and the Victoria Forum, May 21, 2008
    • Post an article about the Environmental Flows Allocation Process in your newsletter
      • Help spread the word about this important new process to your organization's members. Contact Jennifer Ellis at ellis@nwf.org or 512-447-6032 for content.
    • Run an opinion editorial about this process in your local paper
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  • Take Action!

    Get involved in securing water for the environment for your river basin/bay area!


    Stay abreast of new developments and opportunities for public input as the Environmental Flows Allocation Process unfolds by signing up to receive monthly emails. Sign up here


    If you're interested in making a bigger commitment, consider submitting your name as a potential stakeholder that represents one of 17 interest groups. Learn more.


    If you are a credentialed scientist with knowledge that could be useful for determining the environmental flow standards, please consider submitting your name for a science team. Learn more.


    Questions? Call Jennifer Ellis at 512-476-9805 or email ellis@nwf.org


    Here are just a few things you can do.


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