Flow between aquifers-the net vertical flow between the aquifer and adjacent

Staff Report & Agenda Item Details

4. Flow between aquifers-the net vertical flow between the aquifer and adjacent aquifers or confining units. This flow is controlled by the relative water levels in GAM Run 19-011: Cow Creek Groundwater Conservation District Groundwater Management Plan March 5, 2019 Page7 of77 each aquifer and aquifer properties of each aquifer or confining unit that define the amount of leakage that occurs. The information needed for the district's management plan is summarized in Tables L through 4. It is important to note that sub-regional water budgets are not exact. This is due to the size of the model cells and the approach used to extract data from the model. To avoid double accounting, a model cell that straddles a political boundary, such as a district or county boundary, is assigned to one side of the boundary based on the location of the centroid of the model cell. For example, if a cell contains two counties, the cell is assigned to the county where the centroid of the cell is located. GAM Run 19-011: Cow Creek Groundwater Conservation District Groundwater Management Plan March 5,2079 Page 8 of 17 TABLE 1. SUMMARIZED INFORMATION FOR THE EDWARDS-TRINITY (PLATEAU) AQUIFER FOR COW CREEK GROUNDWATER CONSERVATION DISTRICT'S GROUNDWATER MANAGEMENT PLAN ALL VALUES ARE REPORTED IN ACRE-FEET PER YEARAND ROUNDED TO THE NEAREST 1 ACRE-FOOT. Management Plan requirement Aquifer or confining unit Results Estimated annual amount of recharge from precipitation to the district Edwards-Trinity (PlateauJ Aquifer 6,046 Estimated annual volume of water that discharges from the aquifer to springs and any surface-water body including lakes, streams, and rivers E dwards-Trinity IPlateau) Aquifer 3,067 Estimated annual volume of flow into the district within each aquifer in the district E dwards-Trinity (PlateauJ Aquifer 4,020 Estimated annual volume of flow out of the district within each aquifer in the district Edwards-Trinity (Plateau) Aquifer 290 Estimated net annual volume of flow between each aquifer in the district Flow from the Edwards-Trinity [PlateauJ Aquifer into the Trinity Aquifer 6,429 GAM Run 19-011: Cow Creek Groundwater Conservation District Groundwater Management Plan March 5,20L9 Page9 of 'J,7 Gillespie Kerr Bandera Legend Blanco Comal Counties Cow Creek Groundwater Conservalion District Aclive cells within offfcial Edwards-Tdnity (Plateau) Aqulfer boundaries Bexar t:I 't0 Miles FIGURE 1. AREA OF THE GROUNDWATER AVAILABILITY MODEL FOR THE EDWARDS-TRINITY (pr.ltTEAU) AQUTFER FROM WHrCH THE TNFORMATION rN TABrE l WAS EXTRACTED (THE AQUIFERSYSTEM EXTENT WITHIN THE DISTRICT BOUNDARN. Kendall GAM Run 19-011: Cow Creek Groundwater Conservation District Groundwater Management Plan March 5,2079 Page 1"0 of 1,7 TABLE2. SUMMARIZED INFORMATION FOR THE TRINITYAQUIFER FOR COW CREEK GROUNDWATER CONSERVATION DISTRICT'S GROUNDWATER MANAGEMENT PLAN. ALL VALUES ARE REPORTED IN ACRE-FEET PER YEAR AND ROUNDED TO THE NEAREST 1 ACRE. FOOT. Management Plan requirement Aquifer or

This docket item is classified as NEUTRAL (0.0 Score Impact). Routine administrative reports, monthly accounts payable/disbursement registers, minutes approvals, and procedural motions are logged for public transparency but carry zero weight in calculating an official's Roll-Call Freedom Score.