Water Data and Mapping

The H-GAC Clean Rivers Program publishes an annual report for the Texas Commission on Environmental Quality summarizing the state of water quality in the region. The 2024 Basin Highlights Report includes a regional water quality summary and trends analysis, detailed characterizations of three watersheds, and a technical water quality primer. The report is accessible online with interactive maps, photos, and graphics.

The H-GAC Clean Rivers Program publishes an annual report for the Texas Commission on Environmental Quality summarizing the state of water quality in the region. The 2023 Basin Highlights Report includes a regional water quality summary and trends analysis, detailed characterizations of three watersheds, and a technical water quality primer. The report is accessible online with interactive maps, photos, and graphics.

The H-GAC Clean Rivers Program publishes an annual report for the Texas Commission on Environmental Quality summarizing the state of water quality in the region. The 2022 Basin Highlights Report includes a regional water quality summary and trends analysis, detailed characterizations of three watersheds, and a technical water quality primer. The report is accessible online with interactive maps, photos, and graphics.

The Basin Summary Report, produced every five years, outlines water quality issues in the H-GAC Clean Rivers Program region based on technical analysis of historical and current trends. This summary document highlights significant findings, activities and accomplishments, and recommendations from the report.

The H-GAC Clean Rivers Program publishes an annual report for the Texas Commission on Environmental Quality summarizing the state of water quality in the region. The 2020 Basin Highlights Report includes a regional water quality summary and trends analysis, detailed characterizations of three watersheds, and a technical water quality primer. The report is accessible online with interactive maps, photos, and graphics.

The H-GAC Clean Rivers Program publishes an annual report for the Texas Commission on Environmental Quality summarizing the state of water quality in the region. The 2019 Basin Highlights Report includes a regional water quality summary and trends analysis, detailed characterizations of three watersheds, and a technical water quality primer. The report is accessible online with interactive maps, photos, and graphics.

The H-GAC Clean Rivers Program publishes an annual report for the Texas Commission on Environmental Quality summarizing the state of water quality in the region. The 2018 Basin Highlights Report includes a regional water quality summary and trends analysis, detailed characterizations of three watersheds, and a technical water quality primer. The report is accessible online with interactive maps, photos, and graphics.

The H-GAC Clean Rivers Program publishes an annual report for the Texas Commission on Environmental Quality summarizing the state of water quality in the region. The 2017 Basin Highlights Report includes a regional water quality summary and trends analysis, detailed characterizations of three watersheds, and a technical water quality primer. The report is accessible online with interactive maps, photos, and graphics.

The H-GAC Clean Rivers Program publishes an annual report for the Texas Commission on Environmental Quality summarizing the state of water quality in the region. The 2016 Basin Highlights Report includes a regional water quality summary and trends analysis, detailed characterizations of three watersheds, and a technical water quality primer. The report is accessible online with interactive maps, photos, and graphics.

This application is the interactive version of BIG report. Visit the BIG website for more information.

Regional Flood Information is an interactive GIS tool that provides information on neighborhoods and population vulnerable to potential flooding and hazards. It consolidates data from various Federal and local agencies relevant to recent flooding caused by Hurricane Harvey in the H-GAC region (13 counties).

H-GAC's Designing for Impact project seeks to create policy solutions and implementation tools that advance the use of Low Impact Development (LID) techniques to mitigate the negative impacts of coastal development within the Houston-Galveston area. Visit the Designing for Impact page for more information.

Use the OSSF Information System application to view onsite septic system facilities and unpermitted analysis for the region. Visit the On-Site Sewage Facilities page for more information.

Visit Riparian Buffer website to learn more about your watershed, compare your watershed with others in the region, visualize what a buffer will look like on your property, calculate cost estimates, and find agency contact information for your area. View the Riparian buffer Planning Tool for more information.

Datasets provided by H-GAC are available for the assessment basins within the H-GAC Region. Datasets are compiled from data downloaded from the Texas Commission on Environmental Quality (TCEQ) Surface Water Quality Monitoring Information System (SWQMIS) database. Only data that have met the quality assurance requirements of an applicable Quality Assurance Project Plan (QAPP) are included.

Urban Forestry tool helps users to assess urban forests (land cover and tree canopy) in areas and to develop urban forestry planning projects that identify and prioritize urban forestry conservation and restoration efforts.

Use the Water Resources Information Map to locate Monitoring Stations and access Water Quality Data for the region.