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Surface Water Conditions in the San Rafael Basin

Streamflow data, including average seasonal flow, average annual flow and other information is shown in Table 3.12-2.  The basin does not contain flood ALERT equipment.  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 3.12-3.   The location of streamflow gages identified by USGS number and large reservoirs are shown on Figure 3.7-4.  There were no runoff contours for this basin. 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 3.12.5 - 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 3.12-2.
  • Data from one real-time station located at the Santa Cruz River are shown on the table and on Figure 3.12-4.
  • The average seasonal flow is highest in the Summer (July-September) and lowest in the Spring (April-June).
  • Maximum annual flow was 12,600 acre-feet in 1955 and minimum annual flow was 123 acre-feet in 1962. 

Reservoirs and Stockponds

  • Refer to Table 3.12-3.
  • Surface water is stored or could be stored in one large reservoir and one small reservoir in the basin.
  • The large reservoir is used for recreation and has a total maximum storage of 4,400 acre-feet.
  • There are 258 registered stockponds in this basin.

Click to view Table 3.12-2

Click to view Table 3.12-2 Streamflow Data for the

San Rafael Basin

Click to view Table 3.12-3

Click to view Table 3.12-2 Reservoirs and

Stockponds in the San Rafael Basin

 Click to view Figure 3.12-4

Click to view Figure 3.12-4 San Rafael Basin

Surface Water Conditions

 

 

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