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Securing Arizona's Water Future
Cultural Water Demand in the Lower Gila Basin

Cultural water demand data including population, number of wells and the average well pumpage and surface water diversions by the municipal, industrial and agricultural sectors are shown in Table 7.4-8.  Effluent generation including facility ownership, location, population served and not served, volume treated, disposal method and treatment level is shown in Table 7.4-9Figure 7.4-10 shows the location of demand centers.  A description of cultural water demand data sources and methods is found in Volume 1, Appendix A.  More detailed information on cultural water demands is found in Section 7.0.7.  For information on gpcd and annual water demand by individual community water systems in this basin see ADWR's Community Water System Program annual water use reporting summary.

Cultural Water Demands

  • Refer to Table 7.4-8 and Figure 7.4-10.
  • Population in this basin increased from 9,873 in 1980 to 11,297 in 2000.
  • Most cultural water use is for irrigation primarily near the Gila River.
  • Agricultural water demand for groundwater decreased from 254,000 AFA in 1991-1995 to 246,000 AFA in 2001-2005.  Total agricultural water demand increased from 619,000 AFA in 1991-1995 to 629,000 AFA in 2001-2005.  
  • Industrial groundwater demand is relatively small but increased from 3,400 AFA in 1991-1995 to 3,600 AFA in 2001-2005.  Industrial uses in the basin include multiple dairies and a large feedlot.
  • Municipal groundwater demand is relatively small and increased from 1,800 acre-feet per year in 1991-1995 to 2,000 AFA in 2001-2005.  Municipal surface water use is also minimal but increased from 400 AFA in 1991-1995 to 500 AFA in 2001-2005.
  • As of 2005 there were 718 registered wells with a pumping capacity of less than or equal to 35 gpm and 850 wells with a pumping capacity of more than 35 gpm.

Effluent Generation

  • Refer to Table 7.4-9.
  • There are eight known wastewater treatment facilities in this basin.
  • Information on disposal method was available for six facilities.  All five facilities discharge to evaporation ponds and one facility discharges for irrigation.

Click here for Table 7.4-8

Table 7.4-8 Cultural Water Demand in the Lower Gila Basin

Click here for Table 7.4-9

Table 7.4-9 Effluent Generation in the Lower Gila Basin

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Figure 7.4-10 Lower Gila Basin Cultural Water Demand

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References and Supplemental Reading for the Lower Gila Basin

Colorado River
Lower Colorado River Planning Area
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Imperial Dam
Welton Mohawk Agriculture