Maps & GIS

illustrated map of aquifer

Edwards Aquifer Maps and GIS Library

Located in the heart of south central Texas, the Edwards Aquifer is the natural water resource that supports approximately 2 million of us. It is part of a much larger system that spans approximately 8,800 square miles.

The Edwards Aquifer Authority manages the San Antonio segment of the Balcones Fault Zone. This area covers all or parts of eight counties including Uvalde, Medina, Atascosa, Bexar, Comal, Guadalupe, Hays, and Caldwell Counties.

Featured Maps

Recharge Zones

PDF Maps

Edwards Aquifer System Map
Letter Size |  Wall Map  |  PowerPoint Slide

General Aquifer Flowpath Map
Wall Map


Shapefiles

Aquifer Zones

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EAA Sub-chapter 713 Regulated Zones

PDF Files

Chapter 713 Edwards Aquifer System Map
Letter Size  |  Wall Map |  PowerPoint Slide

Subchapter E: Spill Reporting and Subchapter F: Regulated Substances Registration, Storage, and Planning
Letter Size  |  Wall Map |  PowerPoint Slide

Subchapter G: Aboveground and Underground Storage Tanks
Letter Size  |  Wall Map |  PowerPoint Slide

Subchapter H: Prohibitions on Coal Tar
Letter Size  |  Wall Map |  PowerPoint Slide


Shape Files

Aquifer Zones
H_RegulatedArea_CoalTar
EFG_RegulatedAreas_SpillsSubstancesTanks

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EAA and Surrounding Groundwater Conservation Districts

Shape Files

BSEACD with Annex Area
HTGCD
PCCD

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EAA Sub-chapter 713 Regulated Zones

PDF Files

District 01
Wall Map

District 02
Wall Map

District 03
Wall Map

District 04
Wall Map

District 05
Wall Map

District 06
Wall Map

District 07
Wall Map

District 08
Wall Map

District 09
Wall Map

District 10
Wall Map

District 11
Wall Map

District 12
Wall Map

District 13
Wall Map

District 14
Wall Map

District 15
Wall Map

EAA Director Districts
Wall Map


Shape Files

EAADirectorDistricts
EAADistrictPrecincts2023

View Mapping App & Map My Location

EAA Weather Stations Map

Shape Files

EAAWeatherStations

View Map & Access Data

Karst Connections: A Virtual Field Experience

Experience Karst Connections

Habitat Conservation Plan (HCP)

PDF Files

Comal HCP Final Sample Locations
Wall Map

San Marcos HCP Final Sample Locations
Wall Map

Comal Springs Monitoring Maps

Monitoring Map

Comal Springs Monitoring Maps
View Map

San Marcos Springs Monitoring Map

Monitoring Maps

San Marcos Springs Monitoring Maps
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