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Land of the Living Waters

Land of the Living Waters. The South Llano River, its Springs, and its Watershed. Photos: Jennifer Walker. Why the Study?. Conflicts develop when Rural communities have pressure place on water resources -lack of adequate data -laws favorable to development of resource

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Land of the Living Waters

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  1. Land of the Living Waters The South Llano River, its Springs, and its Watershed Photos: Jennifer Walker

  2. Why the Study? Conflicts develop when Rural communities have pressure place on water resources -lack of adequate data -laws favorable to development of resource -lack of local organization and unified voice

  3. Area of major springs

  4. Median Monthly Discharge for Llano River at Junction and Pedernales River at Johnson City

  5. Major Springs of the South Llano Contribution to Flow Big Paint ~ 45% Seven Hundred ~ 35% Tanner ~15% Area of major springs

  6. Source of Springs From Gunnar Brune, 1975

  7. Elevation-- 2000’ Elevation-- 1900’

  8. Groundwater Table and Direction of Flow

  9. Simulated Drawdown of the Aquifer 8,000 ac-ft of pumping Edwards County 8,000 ac-ft of pumping Edwards County following drought of 1950s

  10. Elevation-- 2000’ Elevation-- 1930’ Elevation-- 1900’ 40-45% Reduction in River and Springflow

  11. ESTIMATING THE IMPACT OF CLIMATE CHANGE ON THE TEXAS WATER BUDGET

  12. AVERAGE GCM 50-yr PROJECTIONS (21 models) UNDER A1B AND A2 SCENARIOS: SOUTH-CENTRAL U.S. REGION TEMPERATURE: + 2 C o PRECIPITATION: - 5 %

  13. PRINCIPAL COMPONENTS OF SURFACE WATER BUDGET as a fraction (%) of Normal rainfall evapo-transpiration* runoff flow to coast 100 100 100 100 Normal (1951-80) 1950’s drought with modern water uses 82 87 35 29 1950’s drought with modern water uses & global warming 78 86 26 16 * excluding lake evaporation

  14. Elevation-- 2000’ Elevation-- ??????????????????????????????????????????????????? Elevation-- 1900’

  15. Median Monthly Discharge for Llano River at Junction and Pedernales River at Johnson City During the dry summer of 2006, the Llano River accounted for 75% of the flows into Highland Lakes

  16. Possible Solutions? Land Stewardship efforts increase the absorption capacity of the Watershed

  17. Potential Opportunity Critical Source of Water Supply to Downstream Users, especially during drought! Source of funding for more land stewardship efforts

  18. Potential Opportunity Critical Source of Water Supply to Downstream Users, especially during drought! Source of Funding for more Land Stewardship efforts in South Llano Watershed

  19. Groundwater Exports By law, a Groundwater District cannot impose more restrictive production limits on groundwater exports Groundwater Management Areas Groundwater Districts are in the process of determining Desired Future Conditions Other Issues Potential Opportunity? Determining how much water is available?

  20. Texas Tech Llano River Field Station

  21. Water’s for Fightin’ Other Issues?

  22. Water’s for Fightin’ Concerns about groundwater future aired By Alyson ChapmanThe Daily Times Published September 2, 2008 A large crowd packed the Groundwater Management Area 9 meeting Friday in Kerrville to discuss future conditions of the area's aquifers. Groundwater experts from nine counties - Bandera, Blanco, Comal, Hays, Kendall, Kerr, North Bexar, North Medina and South Travis - are developing a plan for the aquifers for a 50-year period.

  23. LCRA approves request for James River water A Mason County property owner's bid to divert water from the James River to reservoirs there cleared its first hurdle Wednesday, but more obstacles lie ahead for the plan opposedbydownstream residents. Water’s for Fightin’

  24. Proactive Opportunities Initiate local and regional stakeholder involvement in protection and preservation of resource before significant issues arise Provide a forum for natural resource management education and discussion Identify common interests and provide a cohesive voice that benefits the local community regarding resource issues Provide opportunities for grant funded studies How?

  25. Formation of Non-profit Organization Watershed Association? LLANO MASON KIMBLE SUTTON EDWARDS REAL Mark your calendars: November 15th

  26. Tyson Broad 325.248.3137 Tyson@ctesc.net texaswatermatters.org/southllanoriver.htm PUBLIC WORKSHOP – Llano River Field Station November 15, 2008

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