Major aquifers, well yields, estimated natural recharge, estimated water in storage, number of index wells and date of last water-level sweep are shown in Table 5.4-6. Figure 5.4-6 shows aquifer flow direction and water-level change between 1990-1991 and 2003-2004. Figure 5.4-7 contains hydrographs for selected wells shown on Figure 5.4-6. Figure 5.4-8 shows well yields in four yield categories. A description of aquifer data sources and methods as well as well data sources and methods, including water-level changes and well yields are found in Volume 1, Appendix A.
Major Aquifers
- Refer to Table 5.4-6 and Figure 5.4-6.
- The major aquifer in the basin is basin fill.
- Flow direction is generally from the north to the south.
Well Yields
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As shown on Figure 5.4-8 well yields in this basin range from less than 100 gallons per minute (gpm) to 2,000 gpm.
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One source of well yield information, based on 61 reported wells, indicates that the median well yield in this basin is 125 gpm.
Natural Recharge
Water in Storage
Water Level
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Refer to Figure 5.4-6. Water levels are shown for wells measured in 2003-2004.
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The Department annually measures five index wells in this basin. Hydrographs for three index wells (B-D) and one other wells are shown in Figure 5.4-7.
More recent hydrographs of the index wells may be available through the Department's GWSI webpage.
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There is one ADWR automated groundwater level monitoring device located near Congress.
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These data show the deepest recorded water level is 817 feet west of Congress and the shallowest is 20 feet in the vicinity of Wickenburg.
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Click to view Table 5.4-6 Groundwater Data in the Upper Hassayampa Basin
Click to view Figure 5.4-6 Upper Hassayampa Basin Groundwater Conditions
Click to view Figure 5.4-7 Upper Hassayampa Basin Hydrographs Showing Depth to Water in Selected Wells
Click to view Figure 5.4-8 Upper Hassayampa Basin Well Yields |
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