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Securing Arizona's Water Future
Groundwater Conditions in the Cienega Creek 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 3.3-5.  Figure 3.3-6 shows aquifer flow direction and water-level change between 1990-1991 and 2003-2004.  Figure 3.3-7 contains hydrographs for selected wells shown on Figure 3.3-6.  Figure 3.3-8 shows well yields in four yield categories.  Descriptions of aquifer and well data sources and methods, including water-level changes and well yields, are found in Volume 1, Appendix A.  For more information on groundwater in the basin see Cienega Creek Basin Hydrology.

Major Aquifers

  • Refer to Table 3.3-5 and Figure 3.3-6.
  • Major aquifers in the basin include recent

  • In the central valley the principal aquifer is the basin-fill alluvium.

  • From “the Narrows” south of Interstate 10 there are three aquifers: stream alluvium, basin fill and the Pantano formation. The main aquifer in this section is the stream alluvium.

  • In the southwestern portion of the basin the main aquifer is the stream alluvium that forms the floodplain of Sonoita Creek and its tributaries. 

  • Flow direction south of Sonoita is generally from north to southwest and north of Sonoita it is from the southwest to the northeast.

Well Yields

  • Refer to Table 3.3-5 and Figure 3.3-8.
  • As shown on Figure 3.3-8 well yields in this basin range from less than 100 gallons per minute (gpm) to 2,000 gpm.
  • One source of well yield information, based on 35 reported wells, indicates that the median well yield in this basin is 250 gpm.

Natural Recharge

  • Refer to Table 3.3-5.
  • Natural recharge estimates range from 8,500 acre-feet per year (AFA) to 25,500 AFA.

Water in Storage

  • Refer to Table 3.3-5.
  • Storage estimates for this basin range from 5.1 million acre-feet (maf) to 11 maf to a depth of 1,200 feet.   

Water Level

  • Refer to Figure 3.3-6. Water levels are shown for wells measured in 2003-2004.
  • The Department annually measures 14 index wells in this basin. Hydrographs for two index wells (B and C) and one other well are shown in Figure 3.3-7.  More recent hydrographs of the index wells may be available through the Department's GWSI webpage.
  • The deepest recorded water level in 2003-2004 is 207 feet in Sonoita and the shallowest is 21 feet in the vicinity of Elgin.

Click to view Table 3.3-5

Click for Table 3.3-5 Groundwater Data for the

Cienega Creek Basin

Click to view Figure 3.3-6

Click for Figure 3.3-6 Cienega Creek Basin

Groundwater Conditions

Click to view Figure 3.3-7

Click for Figure 3.3-7 Cienega Creek Basin

Hydrographs Showing Depth to Water in Selected Wells

Click to view Figure 3.3-8

Click for Figure 3.3-8 Cienega Creek Basin

Well Yields

 

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