Regional Reservoirs

surface water infographic

Canyon Lake

This surface water project was established in April of 2006, delivering treated water from Canyon Lake to SAWS customers. The Western Canyon project is a successful alliance between the GBRA (Guadalupe-Blanco River Authority) and water purveyors in Comal, Kendall, and Bexar counties. SAWS has an agreement to receive a minimum of 4,000 AFY*.

canyon lake

Lake Dunlap

Lake Dunlap is located on the Guadalupe River east of the city of New Braunfels and is made possible through an agreement with Canyon Regional Water Authority (CRWA). SAWS has an agreement to receive up to 4,000 AFY of treated surface water from Lake Dunlap through the end of 2023 at which time the water volume is returned in basin and CRWA replaces this volume to SAWS with groundwater supplies.

lake dunlap



Firm yield – The volume of water which can be produced from a defined source during a repeat of the drought of record under existing regulatory, legal, contractual, hydrological or infrastructure constraints

AFY – 1 acre-foot per year = 325,851 gallons per year