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Surface Water Conditions in the Agua Fria Basin

Streamflow data, including average seasonal flow, average annual flow and other information is shown in Table 5.1-2.  Flood ALERT equipment in the basin is shown in Table 5.1-3.  Reservoir and stockpond data, including maximum storage or maximum surface area, are shown in Table 5.1-4.   The location of streamflow gages identified by USGS number, flood ALERT equipment and USGS runoff contours are shown on Figure 5.1-5.  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 5.1.5 - Perennial/Intermittent Streams and Springs and Section 5.0.5 - Surface Water Hydrology. Where available, the header for each section provides a link to the data web site.  

Streamflow Data

  • Refer to Table 5.1-2.
  • Data from seven stations located at five watercourses are shown in the table and on Figure 5.1-5.
  • The average seasonal flow at most stations is highest in the winter (January-March) and lowest is in the spring (April-June).

  • The largest annual flow recorded in the basin is 360,541 acre-feet in 1992 at the Agua Fria near Rock Spring station and the lowest is 12 acre-feet in 1989 at Cottonwood Creek near Waddell Dam.  For a hydrograph showing average annual streamflow from 1940 to 2007 on the Agua Fria near Mayer see Figure 5.1-4.

Flood ALERT Equipment

  • Refer to Table 5.1-3.
  • As of October 2005 there were 14 stations in the basin.

Reservoirs and Stockponds

  • Refer to Table 5.1-4.
  • The basin contains one large reservoir with a maximum capacity of  1,108,600 acre-feet.  Lake Pleasant, created by the New Waddell Dam, is used for flood control, hydroelectric power generation, recreation and water supply purposes.

  • Surface water is stored or could be stored in four small reservoirs in the basin.

    There are 527 registered stockponds in this basin.

Runoff Contour

  • Refer to Figure 5.1-5.
  • Average annual runoff is one inch per year, or 53.3 acre-feet per square mile, in most of the basin and increases to two inches per year, or 106.6 acre-feet per square mile, in the northeast portion of the basin.

Click to view Table 5.1-2

Click for Table 5.1-2 Streamflow Data for the Agua Fria Basin

Click to view Figure 5.1-4

Figure 5.1-4  Annual Flows (in acre-feet) at Agua Fria near Mayer, Water Years 1940-2008 (Station #9512500)

Click to view Table 5.1-3

Click for Table 5.1-3 Flood ALERT Equipment in the

Agua Fria Basin

Click to view Table 5.1-4

Click for Table 5.1-4 Reservoirs and Stockponds in the

Agua Fria Basin

Click to view Figure 5.1-5

Click for Figure 5.1-5 Agua Fria Basin Surface Water Conditions


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References and Supplemental Reading for the Agua Fria Basin

Colorado River Central Highlands Planning Area Download entire Central Highlands Planning Area Atlas in pdf Agua Fria River Lake Pleasant