Earth-Fissure Activity Near Brady and Picacho Pumping Plants, Tucson Aqueduct, Central Arizona Project, Pinal County, Arizona

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Author
Slaff, S.
Issue Date
1991
Keywords
Arizona Geological Survey Open File Reports
Arizona
Pinal County
Tucson Aqueduct
Picacho Pumping Plant
Brandy Pumping Plant
U.S. Bureau of Reclamation
CAP
geologic hazards
earth fissure

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Citation
Slaff, S., 1991, Earth-Fissure Activity Near Brady and Picacho Pumping Plants, Tucson Aqueduct, Central Arizona Project, Pinal County, Arizona. Arizona Geological Survey Open File Report, OFR-91-01, 2 map sheets, map scale 1:24,000, 43 p.
Publisher
Arizona Geological Survey (Tucson, AZ)
Description
Earth fissures are one of the geologic hazards that have damaged the facilities of the Central Arizona Project (CAP). Earth fissures exist along at least two reaches of the Tucson aqueduct, and more are likely to develop in the future. Within the region investigated for this project, potential hazards resulting from earth-fissure development were recognized during the CAP-planning phase and the proposed route of the aqueduct was changed accordingly (Schumann and others, 1984). Where the aqueduct had to pass through a zone of existing or potential fissures, its lining was strengthened with reinforcing steel mats (Sandoval and Bartlett, 1991). The lining was tested when an earth fissure developed beneath the aqueduct in Avra Valley during 1988, in a previously identified hazard zone (Anderson, 1988). The steel mats successfully supported the aqueduct (while it was full of water) until repairs were completed. Through careful planning, construction, monitoring, maintenance, and repair, the U.S. Bureau of Reclamation (USBR) has been able to minimize the impact of fissures on the CAP.
URI
http://hdl.handle.net/10150/630903
Additional Links
https://library.azgs.arizona.edu/item/AOFR-1552431336565-406
Language
en
Series/Report no.
OFR-91-01
Rights
Arizona Geological Survey. All rights reserved.
Collection Information
Documents in the AZGS Document Repository collection are made available by the Arizona Geological Survey (AZGS) and the University Libraries at the University of Arizona. For more information about items in this collection, please contact azgs-info@email.arizona.edu.
North Bounding Coordinate
33.0068
South Bounding Coordinate
32.575
West Bounding Coordinate
-111.764
East Bounding Coordinate
-111.39
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