Areas subject to inundation by the 100-year flood in Avra Valley, Pima County, Arizona
Water-Resources Investigations Report
78-33
By: R.H. Roeske
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Abstract
Avra Valley in Pima County, Arizona, is sparsely populated and is used mainly for agriculture and cattle grazing; however, its proximity to Tucson makes it desirable for urban development. Administrators and planners concerned with future land development may use the map report to determine the approximate areas that are subject to inundation by the 100-year flood. Avra Valley is drained mainly by Brawley Wash; Blanco Wash drains the west side of the valley. Most of the natural drainage system consists of small braided channels bordered by narrow bands of dense vegetation, which cause floodwater to spread over wide areas of shallow depths. During the 100-year flood, the areas inundated by Brawley and Blanco Washes may join in several places. (Woodard-USGS)
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Areas subject to inundation by the 100-year flood in Avra Valley, Pima County, Arizona |
| Series title | Water-Resources Investigations Report |
| Series number | 78-33 |
| DOI | 10.3133/wri7833 |
| Year Published | 1978 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Description | 1 Plate: 36.54 x 39.20 inches |
| Country | United States |
| State | Arizona |
| County | Pima County |
| Other Geospatial | Avra Valley |
| Google Analytic Metrics | Metrics page |