ENVIRONMENTAL FLOWS CYPRESS RIVER BASIN WATERSHED August 14, 2008 Region D Regional Water Planning Group

Provide an overview of the state law and the specific work in the cypress basin Invite you to our next set of meetings – December 2-4 in Jefferson Request the support of the Regional Water Planning Group in its statement “environmental water needs”

Senate Bill 3: Consensus Bill Enacted in 2007 Sec Environmental Flows Standard & Set Asides (a) The commission (TCEQ) by rule shall: Sec Environmental Flows Standard & Set Asides (a) The commission (TCEQ) by rule shall: (1) adopt appropriate environmental flow standards for each river basin … that are adequate to support a sound ecological environment, to the maximum extent reasonable considering other public interests and other relevant factors; (1) adopt appropriate environmental flow standards for each river basin … that are adequate to support a sound ecological environment, to the maximum extent reasonable considering other public interests and other relevant factors; (2) establish an amount of unappropriated water, if available, to be set aside to satisfy the environmental flow standards to the maximum extent reasonable…. (2) establish an amount of unappropriated water, if available, to be set aside to satisfy the environmental flow standards to the maximum extent reasonable….

Existing Goal In Texas Law Maintaining the biological soundness of the state's rivers, lakes, bays, and estuaries is of great importance to the public's economic health and general well-being. (Section (b)) Maintaining the biological soundness of the state's rivers, lakes, bays, and estuaries is of great importance to the public's economic health and general well-being. (Section (b))

How – SB 3 The legislature finds that: The legislature finds that: (1) in those basins in which water is available for appropriation, the commission should establish an environmental set-aside below which water should not be available for appropriation; and (1) in those basins in which water is available for appropriation, the commission should establish an environmental set-aside below which water should not be available for appropriation; and (2) in those basins in which the unappropriated water that will be set aside for instream flow and freshwater inflow protection is not sufficient... a variety of market approaches, both public and private, for filling the gap must be explored and pursued. (2) in those basins in which the unappropriated water that will be set aside for instream flow and freshwater inflow protection is not sufficient... a variety of market approaches, both public and private, for filling the gap must be explored and pursued.

How (continued) The legislature finds that recommendations for state action to protect instream flows and freshwater inflows should be developed through a consensus-based, regional approach involving balanced representation of stakeholders and that such a process should be encouraged throughout the state. The legislature finds that recommendations for state action to protect instream flows and freshwater inflows should be developed through a consensus-based, regional approach involving balanced representation of stakeholders and that such a process should be encouraged throughout the state.

How Much Environmental Flow Standard: …adequate to support a sound ecological environment, to the maximum extent reasonable considering other public interests and other relevant factors; Set Aside: an amount of unappropriated water, if available, … to satisfy the environmental flow standards to the maximum extent reasonable when considering human water needs. Set Aside: an amount of unappropriated water, if available, … to satisfy the environmental flow standards to the maximum extent reasonable when considering human water needs.

A = Sabine & Neches Rivers/Sabine Lake Bay Area, begins November 2007 B = Trinity & San Jacinto Rivers/Galveston Bay Area, begins November 2007 C = Brazos River/Bay & Estuary Area, begins September 2009 D = Colorado & Lavaca Rivers/Matagorda & Lavaca Bays Area, begins September 2008 E = Guadalupe, San Antonio, Mission, & Aransas Rivers/Mission, & Bays Area, begins September 2008 F = Nueces River/Corpus Christi & Baffin Bays Area, begins September 2009 G = Rio Grande/Rio Grande Estuary & the Lower Laguna Madre Area, begins September 2009

Senate Bill 3 In a “basin” for which there is no ongoing flow process, the law also allows, “an effort to develop information on environmental flow needs and ways in which those needs can be met by a voluntary consensus-building process.” Sec (e).

GOALS OF THE CYPRESS BASIN WORK Voluntary effort to determine the amounts, frequency, and variation of instream flows needed in the watershed - based on sound science and a balancing of the needs and interests of stakeholders - to: 1. Protect the ecological, social and economic values provided by instream flows in the system (2004) 2. Assist with the efforts to address water quality impairments in the watershed protection plan. (added 2006)

EXAMPLES OF OBJECTIVES SB 3 Set Aside i.e., a state approved reservation of an environmental flow regime in the watershed, and SB 3 Set Aside i.e., a state approved reservation of an environmental flow regime in the watershed, and Revised Release Pattern for Lake O' the Pines: to provide a more natural pattern of flows downstream in Big Cypress and into Caddo Lake. Revised Release Pattern for Lake O' the Pines: to provide a more natural pattern of flows downstream in Big Cypress and into Caddo Lake. Water Quality Improvements: assure base flows needed for discharge of treated wastewaters. Water Quality Improvements: assure base flows needed for discharge of treated wastewaters.

PADDLEFISH

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC Instream Flow Building Blocks (Envi. Flow Regime) Big Cypress Creek/ Caddo Lake Low Flows High Flow Pulses Floods 6,000-10,000 cfs for 2-3 days Every 3-5 years *Maintain aquatic habitat in floodplain * Riparian seed dispersal * Inhibition of upland vegetation for both creek & lake 20,000 cfs for 2-3 days Every 10 years *For channel migration 6,000 cfs for 2-3 days Every 2 years * For channel maintenance Key Dry Year Avg Year Wet Year 90 cfs Fish habitat 218 – 49 cfs Spawning habitat cfs Maintain aquatic diversity cfs Fish habitat cfs Pre-dam median cfs Benthic drift & dispersal, fish spawning cfs Fish habitat cfs Pre-dam median 40 – 536 cfs Maintain biodiversity and connectivity (backwater & oxbows) 1,500 cfs for 2-3 days 3-5X a year every year * 1 occurring in March for Paddlefish, etc * Sediment transport, oxbow connectivity Waterfowl habitat flushing (Includes December)

Process to Develop The Recommendations December 2004 April 2005 May 2005, Oct 2006, Dec

Conference on Environmental Flows at the Jeffersonian Institute

Examples of 175+ Participants in the Flows Work to Date Local & Regional Governments – NETMWD, CVND, some local counties and cities. Local & Regional Governments – NETMWD, CVND, some local counties and cities. Tx & La State Agencies – TPWD, TWDB, TCEQ, TSSWCB, LDEQ Tx & La State Agencies – TPWD, TWDB, TCEQ, TSSWCB, LDEQ Federal Agencies – Corps of Engineers, USGS, USFWS, National Wetlands Research Center Federal Agencies – Corps of Engineers, USGS, USFWS, National Wetlands Research Center Universities – East Texas Baptist University, Texas A&M, Texas Tech, LSU Shreveport, TCU Universities – East Texas Baptist University, Texas A&M, Texas Tech, LSU Shreveport, TCU Reps from Business and industries – AEP, Nestle Waters NA, Caddo Lake Chamber of Commerce Reps from Business and industries – AEP, Nestle Waters NA, Caddo Lake Chamber of Commerce Others – Red River Valley Assn. DU, TNC, GCLA, NWF Others – Red River Valley Assn. DU, TNC, GCLA, NWF

EXAMPLES OF WORK Literature Review & Summary of Scientific Studies - Tx A&M Literature Review & Summary of Scientific Studies - Tx A&M Field Studies for Baseline Biological, Hydrological and Geomorphic Data - USGS as Lead Agency Field Studies for Baseline Biological, Hydrological and Geomorphic Data - USGS as Lead Agency New gage on Big Cypress - Partnership of TCEQ, USGS, NETMWD to Install and Maintain New gage on Big Cypress - Partnership of TCEQ, USGS, NETMWD to Install and Maintain Computer Modeling of flows - Corps of Engineers Computer Modeling of flows - Corps of Engineers Development of Building Blocks – Initial Recommendations for Flow Regimes for Big, Little and Black Cypress Development of Building Blocks – Initial Recommendations for Flow Regimes for Big, Little and Black Cypress

Installation of a pressure transducer on Big Cypress Bayou to record water elevation. Left to right in the photo is Jeff Mabe (USGS-Biologist), Joe Trungle (Trungale Engineering and Science), Bruce Moring (USGS, Biologist), and Chris Braun (USGS - Hydrologist)

THE INVITATION Next full meeting: December 2-4 Jefferson, Texas Background Materials: Sign-up for updates and notices:

THE REQUEST The opportunity to come back to you in the future to seek a statement in the Region D plan supporting for the goals, process and results, pursuant to Section (e) (5) (F) Texas Water Code that states that the regional plan should include an Section (e) (5) (F) Texas Water Code that states that the regional plan should include an “appropriate provision for environmental water needs”