Major and minor springs with discharge rates and date of measurement, and the total number of springs in the AMA are shown in Table 8.1-5. The locations of major springs and perennial and intermittent streams are shown on Figure 8.1-5. Descriptions of data sources and methods for intermittent and perennial reaches and springs are found in Volume 1, Appendix A.
- Principal perennial streams include the Verde River, Gila River and the Salt River. Only the Verde River is perennial throughout the AMA. Perennial flow in the Salt River and the Gila River below the 91st Avenue WWTP and 23rd Avenue WWTP is from effluent discharge.
- Flow in the Salt and Verde Rivers is dependent on releases from a series of upstream dams.
- Numerous intermittent streams are found in the southeastern portion of the AMA in the Superstition Mountains. Perennial and intermittent streams are found in the northern portion of the AMA in the New River Mountains.
- There are two major springs with a measured discharge of 10 gallons per minute (gpm) or greater at any time located in the northeastern part of the AMA.
- Four minor springs with measured discharge of 1 to 10 gpm are not mapped but coordinates are given in Table 8.1-5B.
- Listed discharge rates may not be indicative of current conditions. All of the measurements were taken during or prior to 1983.
- The total number of springs, regardless of discharge, identified by the USGS or ALRIS varies from 110 to 132, depending on the database reference.
Table 8.1-5 Springs in the Phoenix AMA
Figure 8.1-5 Phoenix AMA Perennial/Intermittent Streams and Major (>10gpm) Springs