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Cultural Water Demand in the Yuma 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 7.11-7.  Effluent generation including facility ownership, location, population served and not served, volume treated, disposal method and treatment level is shown in Table 7.11-8Figure 7.11-11 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 7.0.7For 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 7.11-7 and Figure 7.11-11.
  • Population in this basin increased from 73,319 in 1980 to 152,928 in 2000.
  • Most cultural water use is for irrigation in the western portion of the basin.
  • Agricultural groundwater demand increased 12%, and agricultural surface water demand increased 7% between 1991 and 2005.   This basin has the largest agricultural water demand in the planning area, with 232,000 acre-feet of groundwater demand and 762,000 acre-feet of surface water demand on average per year in 2001-2005.
  • Municipal groundwater demand increased slightly between 1991 and 2005 and municipal surface water demand increased from 25,500 AFA in 1991-1995 to 32,000 AFA in 2001-2005.
  • Industrial groundwater demand has remained relatively constant and industrial surface water demand decreased from 3,100 AFA in 1991-1995 to 2,000 AFA in 2001-2005.
  • As of 2005 there were 2,689 registered wells with a pumping capacity of less than or equal to 35 gallons per minute and 693 wells with a pumping capacity of more than 35 gallons per minute.

Effluent Generation

  • Refer to Table 7.11-8.
  • There are 24 wastewater treatment facilities in this basin.
  • Information on population served was available for 19 facilities and information on the volume of effluent generated was available for 16 facilities.  These facilities serve almost 130,000 people and generate over 13,000 acre-feet of effluent per year.
  • Three facilities discharge to the Colorado River, three discharge to evaporation ponds, two discharge for irrigation, three discharge to golf courses, three discharge to another facility and seven discharge to unlined impoundments that recharge the aquifer.

Click here for Table 7.11-7

Table 7.11-7 Cultural Water Demand in the Yuma Basin

Click here for Table 7.11-8

Table 7.11-8 Effluent Generation in the Yuma Basin

Click here for Figure 7.11-11

Figure 7.11-11 Yuma Basin Cultural Water Demand



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References and Supplemental Reading for the Yuma Basin

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Agriculture in Yuma Basin