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Securing Arizona's Water Future
Surface Water Conditions in the Big Sandy Basin

Streamflow data, including average seasonal flow, average annual flow and other information is shown in Table 4.1-2.  Flood ALERT equipment in the basin is shown in Table 4.1-3.  Reservoir and stockpond data, including maximum storage or maximum surface area, are shown in Table 4.1-4.   The location of streamflow gages identified by USGS number, flood ALERT equipment, USGS runoff contours and large reservoirs are shown on Figure 4.1-4.  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 4.1.5 - Perennial/ Intermittent Streams and Springs and Section 4.0.2 - Surface Water Hydrology. Where available, the header for each section provides a link to the data web site.  

Streamflow Data

  • Refer to Table 4.1-2.
  • Data from two stations on two watercourses are shown in the table and on Figure 4.1-4.  One station has been discontinued and the other is a real-time station.

  • The average seasonal flow is highest in the summer (July-September) and lowest in the spring (April-June) and the fall (October-December).

  • Maximum annual flow in the basin was 8,326 acre-feet in 1976 at the Cottonwood Wash station and minimum annual flow was 22 acre-feet in 2002 at the Truxton Wash station.

Flood ALERT Equipment

  • Refer to Table 4.1-3.
  • As of October 2005 there were four stations in the basin, all stations are in Mohave County.

Reservoirs and Stockponds

  • Refer to Table 4.1-4.
  • The basin contains one large reservoir with a maximum capacity of 2,284 acre-feet which is used for fire protection or as a stock or farm pond.

  • Surface water is stored or could be stored in 10 small reservoirs in the basin.

  • There are 426 registered stockponds in this basin.

Runoff Contour

  • Refer to Figure 4.1-4.
  • Average annual runoff is one inch per year, or 53.5 acre-feet per square mile, in the in the south-central portion of the basin near Cow Creek decreasing to 0.1 inches, or 5.35 acre-feet per square mile, to the north and west.

Click to view Table 4.1-2

Click for Table 4.1-2 Streamflow Data for the Big Sandy Basin

Click to view Table 4.1-3

Click for Table 4.1-3 Flood ALERT Equipment in the

Big Sandy Basin

Click to view Table 4.1-4

Click for Table 4.1-4 Reservoirs and Stockponds in the

Big Sandy Basin

Click to view Figure 4.1-4

Click for Figure 4.1-4 Big Sandy Basin

Surface Water Conditions

 

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