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Arizona Department of Water Resources AZ.gov Arizona's Official Web Site
Securing Arizona's Water Future
Groundwater Conditions in the Lake Mohave 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 4.6-6.  Figure 4.6-6 shows aquifer flow direction and water-level change between 1990-1991 and 2003-2004.  Figure 4.6-7 contains hydrographs for selected wells shown on Figure 4.6-6.  Figure 4.6-8 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

  • Refer to Table 4.6-6 and Figure 4.6-6.
  • The major aquifer in this basin is recent stream alluvium.
  • Flow direction is from north to south in this basin.

Well Yields

  • Refer to Table 4.6-6 and Figure 4.6-8.
  • As shown on Figure 4.6-8 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 96 reported wells, indicates that the median well yield in this basin is 1,000 gpm.

Natural Recharge

  • Refer to Table 4.6-6
  • The estimate of natural recharge for this basin is 183,000 acre-feet per year (AFA).  Recharge comes principally from infiltration of Colorado River water.

Water in Storage

  • Refer to Table 4.6-6.
  • Storage estimates for this basin range from 1.2 million acre-feet (maf) to 8.0 maf to a depth of 1,200 feet

Water Level

  • Refer to Figure 4.6-6. Water levels are shown for wells measured in 2003-2004.
  • The Department annually measures three index wells in this basin.  Hydrographs for two of these wells are shown in Figure 4.6-7.  More recent hydrographs of the index wells may be available through the Department's GWSI webpage.
  • Of the three water depths shown, the deepest is 427 feet south of Bullhead City and the shallowest is 337 feet north of Mohave Valley.

Click to view Table 4.6-6

Click to view Table 4.6-6 Groundwater Data for the

Lake Mohave Basin

Click to view Figure 4.6-6

Click to view Figure 4.6-6 Lake Mohave Basin

Groundwater Conditions

Click to view Figure 4.6-7

Click for Figure 4.6-7 Lake Mohave Basin Hydrographs Showing Depth to Water in Selected Wells

Click to view Figure 4.6-8

Click for Figure 4.6-8 Lake Mohave Basin Well Yields

 

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