Lecture 6A
Chapter 1: Introduction to Watersheds
Overview of Arizona's watersheds, featuring maps of various divisions.
Notable river systems include Upper Gila, San Pedro, and the Bill Williams River.
Bill Williams River is formed by Big Sandy River and Santa Maria River confluence.
Water flow details of Rio Yaqui, Rio Magdalena, and Rio Senoia entering Mexico.
Bill Williams River flows to Colorado River, with Alamo Lake reservoir nearby.
Chapter 2: The Salt River
Salt River Watershed crucial for Phoenix Metro Area water supply; heavier flow than Gila.
Despite heavier flow, Gila retains its name, while Salt is a tributary.
Salt River captures runoff from White Mountains, including Black River, White River, and Big Bonito Creek.
Salt River named for historical salt beds, classified as freshwater despite some salt content.
Chapter 3: Details on Salt River
Salt River significant for whitewater rafting, especially between March and June.
Numerous tributaries from Mogollon Rim, including Cariso Creek, Tonto Creek contribute to flow.
Verde River is a permanent stream that flows year-round, contributing to Salt River watershed dynamics.
Chapter 4: Fossil Creek
Fossil Creek known for large springs originating from snow melt and moisture from Mogollon Rim.
Offers scenic views and swimming holes, access often requires a permit.
Chapter 5: East Verde River
East Verde receives augmented water supply from Blue Ridge Reservoir via interbasin exchange.
East Verde is a permanent stream flowing year-round, connecting to the Verde River.
Arizona Trail crosses East Verde with notable fording experiences.
Chapter 6: Conclusion
East Verde River is one of four permanent streams crossed by the Arizona Trail.
Other crossed rivers include Gila River, Salt River, and Colorado River; bridges provided for most crossings except East Verde.