Major and minor springs with discharge rates and date of measurement, and the total number of springs in the basin are shown in Table 4.4-3.  The locations of major springs as well as perennial and intermittent streams are shown on Figure 4.4-5.   Descriptions of data sources and methods for intermittent and perennial reaches and springs are found in Volume 1, Appendix A.  Additional information on surface water in this basin can be found in Section 4.4.4 - Surface Water Conditions and Section 4.0.2 - Surface Water Hydrology.

• There is one perennial stream, the Colorado River, located along the northern basin boundary.

• There are three major springs with a measured discharge of 10 gallons per minute (gpm) or greater at any time.  The largest discharge rate is 25 gpm for an unnamed spring in the northern portion of the basin.

• Springs with measured discharge of 1 to 10 gpm are not mapped but coordinates are given in Table 4.4-3B.  There are 19 minor springs identified in this basin.

• Listed discharge rates may not be indicative of current conditions.  Only four springs have been measured since 1980.

• The total number of springs identified by the USGS varies from 70 to 72, depending on the database reference.

Click to view Table 4.4-3 Springs in the Hualapai Valley Basin