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Groundwater Conditions in the Agua Fria 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 5.1-6.  Figure 5.1-7 shows aquifer flow direction and water-level change between 1990-1991 and 2003-2004.  Figure 5.1-8 contains hydrographs for selected wells shown on Figure 5.1-7.  Figure 5.1-9 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 5.1-6 and Figure 5.1-7.
  • Major aquifers in the basin include basin fill and sedimentary rock (conglomerate).

  • Flow direction in the northern portion of the basin is generally from the north to the south from the basin boundaries toward the center of the basin.

Well Yields

  • Refer to Table 5.1-6 and Figure 5.1-9.
  • As shown on Figure 5.1-9 well yields in this basin range from less than 100 gpm to 2,000 gpm at several locations.

    One source of well yield information, based on 49 reported wells, indicates that the median well yield in this basin is 300 gpm.

    Well yields vary throughout the basin, with a cluster of less than 100 gpm yields in the vicinity of Mayer.

Natural Recharge

  • Refer to Table 5.1-6.
  • The estimate of natural recharge for this basin is 9,000 acre-feet per year (AFA).

Water in Storage

  • Refer to Table 5.1-6.
  • Storage estimates for this basin range from 620,000 acre-feet to a depth of 1,200 feet to 3.5 million acre-feet to an unknown depth.

Water Level

  • Refer to Figure 5.1-7. Water levels are shown for wells measured in 2003-2004.
  • The Department annually measures seven index wells in this basin. Hydrographs for five of these wells are shown in Figure 5.1-8.  More recent hydrographs of the index wells may be available through the Department's GWSI webpage.
  • There is one ADWR automated groundwater level monitoring device in this basin as of May 2009.

  • The deepest recorded water level in 2003-04 is 462 feet near Interstate 17 north of Black Canyon City and the shallowest is 21 feet east of Mayer.

Click to view Table 5.1-6

Click for Table 5.1-6 Groundwater Conditions in the

Agua Fria Basin

Click to view Figure 5.1-7

Click for Figure 5.1-7 Agua Fria Basin

Groundwater Conditions

Click to view Figure 5.1-8

Click for Figure 5.1-8 Agua Fria Basin Hydrographs showing depth to water in selected wells

Click to view Figure 5.1-9

Click for Figure 5.1-9 Agua Fria Basin Well Yields


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References and Supplemental Reading for the Agua Fria Basin

Colorado River Central Highlands Planning Area Download entire Central Highlands Planning Area Atlas in pdf Agua Fria River Lake Pleasant