Filtering by
- All Subjects: Grand Canyon National Park (Ariz.)
- All Subjects: Pima County (Ariz.)
- Creators: United States Geological Survey
- Creators: Tellman, Barbara
The purpose of this report is to summarize information relevant to water aspects of the SDCP and the Pima County Comprehensive Plan. It deals with water supply and human water demand, and water supplies and needs for riparian and wetland habitat.
Builds upon the "Biological Stress Assessment" through the identification of threats and stressors to watercourses within Pima County. It provides background on technical and water policy matters, describes potential and existing impacts to watercourses within Pima County, suggests options for reducing stressors, and outlines a number of issues for discussion withing each watershed planning unit.
Geological examination of the park canyonland, with description of the rocks, water sculping process, volcanic cones and outflows, and land erosion. This edition is Volume 2, 1977 reprint, of the author's 1882 monograph. Includes 12 color maps, 10 color views and is number 280/1500.