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Surface Water Conditions in the Willcox Basin

Streamflow data, including average seasonal flow, average annual flow and other information is shown in Table 3.14-2.  Flood ALERT equipment in the basin is shown on Table 3.14-3.  Reservoir and stockpond data, including maximum storage or maximum surface area of large reservoirs and type of use of the stored water, are shown in Table 3.14-4.  The location of streamflow gages identified by USGS number, flood ALERT equipment, USGS runoff contours and large reservoirs are shown on Figure 3.14-4.  Descriptions of stream, reservoir and stockpond data sources and methods are found in Volume 1, Appendix A.  Additional information on surface water in this basin can be found in Section 3.14.5 - Perennial/Intermittent Streams and Springs and Section 3.0.2 - Surface Water Hydrology. Where available, the header for each section provides a link to the data web site.  

Streamflow Data

  • Refer to Table 3.14-2.
  • Data from three stations on three watercourses are shown on the table and on Figure 3.14-4.  Two stations have been discontinued, the remaining one is a real-time station.

  • The average seasonal flow for all the stations is highest in the Summer (July-September) and lowest in the Spring (April-June).

  • Maximum annual flow in this basin was 10,787 acre-feet in 1921 on West Turkey Creek  and minimum annual flow was 22 acre-feet in 1976 on Leslie Creek.

Flood ALERT Equipment

  • Refer to Table 3.14-3.
  • There is one station in the basin as of October 2005. 

Reservoirs and Stockponds

  • Refer to Table 3.14-4.
  • Surface water is stored or could be stored in two large and nine small reservoirs in this basin.
  • There are 762 registered stockponds in this basin.          

Runoff Contour

  • Refer to Figure 3.14-4.
  • Average annual runoff increases from 0.2 inches, or 10.6 acre-feet per square mile, in the vicinity of Willcox to five inches, or 266.5 acre-feet per square mile, toward the Chiricahua Mountains in the southeast.

Click to view Table 3.14-2

Click to view Table 3.14-2 Streamflow Data for the Willcox Basin

Click to view 3.14-3

Click to view Table 3.14-3 Flood ALERT Equipment in the

Willcox Basin

Click to view 3.14-4

Click to view Table 3.14-4 Reservoirs and Stockponds in the Willcox Basin

Click to view Figure 3.14-4

Click to view Figure 3.14-4 Willcox Basin

Surface Water Conditions


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