This report provides compilation and estimation of groundwater pumpage for selected public supply systems located in the Southeastern Coastal Plain aquifer system of Alabama. The groundwater pumpage use and the source of data are given for each year during the period of 1960-85. PROCEDURES FOR DATA COMPILATION AND ESTIMATION Table 1 lists the public supply systems and the county in which they are located. Figure 1 shows the location of the study area for the Regional Aquifer-System Analysis (RASA) in Alabama. Table 2 lists groundwater pumpage for public supply systems in alphabetical order. Public water systems serve the public with water retrieved from groundwater sources (wells and springs), surface water sources (rivers and lakes), and water purchased from other water suppliers. The total water received by customers is reported as water consumption. In most instances there is some water loss due to leaky pipes causing more water to be pumped than is actually consumed. Annual groundwater pumpage data and their source are given for each system for the years 1960-85. Because data could not be collected for all the years during that period, estimations for the missing years based on the available data are reported also. For each year the amount of ground water used is given in million gallons per day (Mgal/d). The source of the data is

Depressions in the potentiometrie surface have developed around Demopolis in the Gordo and Eutaw aquifers partly as a result of groundwater withdrawals. Other depressions and troughs have formed along the major rivers because of groundwater discharge to the rivers. All the recharge areas for the major aquifers are susceptible to surface contamination throughout most of the study area; however, the recharge areas are in rural settings that are used for timberlands, farms, and pastures. Usually, the depth to the water-bearing zone tapped by a well and the horizontal distance from the outcrop to the well provide a buffer from surface contamination. Other potential areas susceptible to surface contamination are the permeable terrace and alluvial deposits along major river flood plains, if the potentiometric surface in the underlying aquifer has been depressed. The alluvial deposits are usually in areas of discharge, but if pumpage has caused a depression in the potentiometric surface of the underlying aquifer, the alluvial aquifer will become a source of recharge, allowing water to infiltrate through the alluvium into the underlying aquifer.