Groundwater Management Areas (GMA) were created in order to provide a balance between the highest practicable level of groundwater production and the conservation, preservation, protection, recharging, and prevention of waste of the groundwater, and of groundwater reservoirs or their subdivisions, and to control subsidence caused by withdrawal of water from those groundwater reservoirs or their subdivisions, consistent with the objectives of Chapter 36 Texas Water Code.
The initial Groundwater Management Area delineations were adopted on December 15, 2002, and are modified as necessary according to agency rules. There are 16 groundwater management areas in Texas. All groundwater conservation districts are part of at least one groundwater management area.
For more information please visit the GMA 9 website here.
Bandera County River Authority and Ground Water District
Blanco-Pedernales Groundwater Conservation District
Comal Trinity Groundwater Conservation District
Cow Creek Groundwater Conservation District
Hays Trinity Groundwater Conservation District
Headwaters Groundwater Conservation District
Medina County Groundwater Conservation District
Southwestern Travis County Groundwater Conservation District
The chart below shows the actual water levels taken from several monitor well across Blanco County dating back to 2008, which is the baseline year GMA 9 designated for regional planning. The average change in Water Levels in Blanco County Trinity Aquifer Monitor Well is a positive 9ft, meaning there has been more recharge to the Trinity aquifer in Blanco County than loss of water.
