Groundwater Management Area 8 (GMA 8) is one of 16 GMAs created by the Texas Legislature to facilitate statewide water planning. The GMA boundaries generally follow the boundaries of major aquifers. The GMA 8 boundary encompasses two major aquifers—the Trinity and the northern portion of the Edwards BFZ (Balcones Fault Zone); and seven minor aquifers—Blossom, Nacatoch, Woodbine, Brazos River Alluvium, Marble Falls, Ellenburger-San Saba, and Hickory. GMA 8 covers 45 counties extending from Travis County in the south to the Texas/Oklahoma border in the north.

Within the GMA 8 boundary, there are twelve groundwater conservation districts (GCD). There are twelve voting members in GMA 8 resulting in 24 of the 45 counties being covered by a GCD.  The GCDs were tasked by the State Legislature to develop desired future conditions (DFC) for each of the major and minor aquifers within its boundary by the year 2010. These figures were presented to the Texas Water Development Board (TWDB) who then determined the managed available groundwater (MAG) figures for each aquifer. The MAG figures will be included in regional water plans and the state water plan.

GMA 8 has completed this process and contracted with Turner Collie & Braden, Inc. (TCB, Inc. ) now AECOM for technical assistance.  This website has been developed to provide a shared common space where the GMA 8 representatives may deposit and retrieve data that will be used in the development of the DFCs, as well as providing a site where the public may obtain information about GMA 8.

GMA 8 has adopted DFCs for the nine aquifers (Trinity, Edwards BFZ, Blossom, Brazos River Alluvium, Nacatoch, Woodbine, Ellenburger-San Saba, Hickory, and Marble Falls) within their boundary.