Name: Edwards Aquifer Contributing Zone

Display Field: WATERSHED_NAME

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: The Edwards Aquifer is an underground layer of porous, honeycombed, water-bearing rock that is between 300-700 feet thick.The contributing zone occurs on the Edwards Plateau, also called the Texas Hill Country.The contributing zone is also called the drainage area or the catchment area. Here the land surface "catches" water from rainfall that averages about 30" per year, and water runs off into streams or infiltrates into the water table aquifer of the plateau. Runoff from the land surface and water table springs then both feed streams that flow over relatively impermeable limestones until they reach the recharge zone.

Copyright Text: Please credit the City of Austin Watershed Protection Department with use of this data.

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Spatial Reference: 102739  (2277)  LatestVCSWkid(0)

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Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: Object ID )
• CONTRIBUTING_ZONE ( type: esriFieldTypeString, alias: Contributing Zone, length: 24 )
• WATERSHED_NAME ( type: esriFieldTypeString, alias: Watershed Name, length: 50 )
• SHAPE ( type: esriFieldTypeGeometry, alias: Shape )

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