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Securing Arizona's Water Future
Groundwater Conditions in the Hualapai Valley 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 4.4-4.  Figure 4.4-6 shows aquifer flow direction and water-level change between 1990-1991 and 2003-2004.  Figure 4.4-7 contains hydrographs for selected wells shown on Figure 4.4-6.  Figure 4.4-8 shows well yields in five 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

  • The major aquifers include basin fill, sedimentary rock and volcanic rock.
  • Flow direction is from the south to the north in most of the basin and east to west near New Kingman-Butler.

Well Yields

  • As shown on Figure 4.4-8 well yields in this basin range from less than 100 gallons per minute (gpm) to greater than 2,000 gpm.
  • One source of well yield information, based on 33 reported wells, indicates that the median well yield in this basin is 900 gpm.

Natural Recharge

  • Refer to Table 4.4-4.
  • Natural recharge estimates range from 2,000 acre-feet per year (AFA) to 3,000 AFA.

  • Recharge to the aquifers comes principally from streambed infiltration.

Water in Storage

  • Refer to Table 4.4-4.
  • Storage estimates for this basin range from 3.0 million acre-feet to 5.3 million acre-feet to a depth of 1,200 feet. 

  • The USGS (1971) estimates that the basin has between 10.5 and 21 million acre-feet in storage to a depth of 1,500 feet.

Water Level

  • Refer to Figure 4.4-6. Water levels are shown for wells measured in 2003-2004.
  • The Department annually measures 16 index wells in this basin, hydrographs for six of these wells are shown on Figure 4.4-7.
  • The Department measures water levels four times daily at one automated groundwater monitoring site in the southern portion of the basin.  More recent hydrographs of the index wells may be available through the Department's GWSI webpage.
  • The deepest recorded water level in the basin is 924 feet east of New Kingman-Butler and the shallowest is 257 feet east of Stockton Hill Road in the center of the basin.

Click to view Table 4.4-4

Click for Table 4.4-4 Groundwater Conditions in the

Hualapai Valley Basin

Click to view Figure 4.4-6

Click for Figure 4.4-6 Hualapai Valley Basin

Groundwater Conditions

Click to view Figure 4.4-7

Click for Figure 4.4-7 Hualapai Valley Basin Hydrographs Showing Depth to Water in Selected Wells

Click to view Figure 4.4-8

Click for Figure 4.4-8 Hualapai Valley Basin Well Yields

 

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