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 7.3-7. Figure 7.3-9 shows the location of demand centers. There is no recorded effluent generation in this basin. 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 7.3-7 and Figure 7.3-9.
- Population in this basin increased from 359 in 1980 to 608 in 2000.
- Most cultural water use is for irrigation in the southern and northwestern portions of the basin.
- Groundwater use for agriculture increased from 9,500 AFA between 1991-1995 to 36,500 between 2001-2005; however, in general agricultural groundwater use declined 68% from 1971 to 2005. The entire Harquahala Basin is within an Irrigation Non-Expansion Area (INA). The Harquahala INA was created in 1981; no new agricultural lands can be irrigated with groundwater in an INA.
- Surface water use for irrigation began in 1986 with deliveries of Central Arizona Project water to the basin. Agricultural surface water demand increased from 79,000 AFA between 1986-1990 to 85,000 AFA between 1996-2000; but decreased to 69,600 AFA in 2001-2005.
- There was no reported industrial groundwater demand prior to 2001-2005. The Harquahala Generating Project began operating in 2001. This plant used an average of 2,500 AFA from 2001 to 2005.
- As of 2005 there were 196 registered wells with a pumping capacity of less than or equal to 35 gpm and 212 wells with a pumping capacity of more than 35 gpm.
Table 7.3-7 Cultural Water Demand in the Harquahala Basin
Figure 7.3-9 Harquahala Basin Cultural Water Demand