Hydrologic data for urban studies in the San Antonio, Texas, metropolitan area, 1975

Hydrologic investigations of urban watersheds in Texas were begun by the U.S. Geological Survey in 1954. These studies are now in progress in Austin, Dallas and Dallas County, Fort Worth, Houston, and San Antonio. 

The Geological Survey, in cooperation with the Texas Water Development Board, expanded the existing streamflow network in the San Antonio metropolitan area in May 1968 to begin urban hydrology studies in this area. In September 1968, the program was further expanded to include the collection of water-quality data. The objectives of the Sari Antonio urban hydrology study are: 

1. To provide data showing the effects of various stages of urbanization on flood discharge and runoff. 
2. To provide water-quality data on surface-water runoff from floods of various magnitudes, during all seasons of the year from areas with different types of utilization. 

Annual publication of the San Antonio urban studies was initiated in 1969.