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Securing Arizona's Water Future
Groundwater Conditions in the Dripping Springs Wash Basin

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 3.6-6. Figure 3.6-6 shows aquifer flow direction and water-level change between 1990-1991 and 2003-2004.  Figure 3.6-7 contains hydrographs for selected wells shown on Figure 3.6-6. Figure 3.6-8 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.  For more information on groundwater in the basin see Dripping Springs Wash Basin Hydrology.

Major Aquifers

  • The major aquifers in the basin are recent stream alluvium, consisting of mostly sand and silt, and Gila Conglomerate sedimentary rock.  The recent stream alluvium is the principal water-producing unit.
  • Flow direction is generally from the northwest to the southeast.

Well Yields

  • As shown on Figure 3.6-8 well yields in this basin range from less than 100 gpm to 2,000 gpm.

  • One source of well yield information, based on 12 reported wells, indicates that the median well yield in this basin is 394.5 gpm.

Natural Recharge

  • Refer to Table 3.6-6.
  • Natural recharge estimates range from 3,000 acre-feet per year (AFA) to 9,000 AFA.

Water in Storage

  • Refer to Table 3.6-6.
  • Storage estimates for this basin range from 150,000 acre-feet to less than 1.0 million acre-feet to a depth of 1,200 feet. 

Water Level

  • Refer to Figure 3.6-6.  Water levels are shown for wells measured in 2003-2004.
  • The Department annually measures two index wells in this basin.  A hydrograph for one of these wells is shown in Figure 3.6-7.  More recent hydrographs of this and other index wells may be available through the Department's GWSI webpage.
  • There are only two water levels recorded in this basin during 2003-2004.  The wells are close to each other and measure 87 feet and 98 feet to water. Water levels in both declined one to 15 feet between 1990-1991 and 2003-2004.

Click to view Table 3.6-6

Click to view Table 3.6-6 Groundwater Data for the

Dripping Springs Wash Basin

Click to view Figure 3.6-6

Click to view Figure 3.6-6 Dripping Springs Wash Basin Groundwater Conditions

Click to view Figure 3.6-7

Click to view Figure 3.6-7 Dripping Springs Wash Basin Hydrographs Showing Depth to Water in Selected Wells

Click to view Figure 3.6-8

Click to view Figure 3.6-8 Dripping Springs Wash Basin

Well Yields

 

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