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Guadalupe-Blanco River Authority
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Conditions
Basin Summary
Guadalupe Basin Precipitation and Flows Map
Operations
Water Treatment
Wastewater Treatment
Water Resource Management
Canyon Reservoir
Studies
Developer Resources
Environmental
Guadalupe River Habitat Conservation Plan
Environmental Laboratory Service
One Water New Braunfels
Water Quality
Recreation
Canyon Lake Gorge
Coleto Creek Park
Lake Wood Park
Nolte Island Recreation Area
River Heritage Tour
Hydrolakes
Education
Elementary Classroom Tools
Elementary School Trunks
Secondary Classroom Tools
Secondary School Trunks
Field Trips
5th Grade Gorge Outdoor Classroom
GBRA Scholarship Program
Interactive Learning
News & Resources
Drought/Conservation
Flood Resources
Hazard Mitigation
Publications
River Run
Basin Highlights Reports
Basin Summary Reports
Consumer Confidence Reports
Annual Financial Reports
About Us
Board of Directors
Management Team
Board Meetings
Employment
Financial Transparency
Purchasing and Procurement
Contact Us
Developer Resources
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Developer Resources
Developer's Resource Guide - Revised August 01, 2025
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Standards and Design Guidelines for Developer Constructed Facilities - Revised July 28, 2025
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CAD Files - Revised July 28, 2025
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