Hydrological and Environmental Controls on Water Management in Semiarid Urban Areas - Phase 2

摘要

Rainfall and runoff studies initiated by the University of Arizona provide data for three small urban watersheds from 1968 and one rural watershed from 1957 to 1969. Annual precipitation of about 11 inches produces annual runoff ranging from 0.44 inches in depth for the rural watershed and 1.10 to 2.10 inches for the urban watersheds. There is about a four to five-fold increase in average yearly storm runoff volume with urbanization in the Tucson area. Water samples collected on a lumped basis show generally high concentrations of suspended sediment, bacterial loading, and dissolved organics.