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

Persistent Link:
http://hdl.handle.net/10150/306949
Title:
Hydrological and Environmental Controls on Water Management in Semiarid Urban Areas -- Phase II
Author:
Resnick, Sol D.; DeCook, K. James; Phillips, Robert A.
Affiliation:
Water Resources Research Center; Water Resources Research Center; Department of Civil Engineering
Publisher:
Water Resources Research Center, University of Arizona (Tucson, AZ)
Issue Date:
Mar-1983
Description:
Research Project Technical Completion Report (B-023-ARIZ) For: United States Department of the Interior, Project Dates: 1971-1973. / The work upon which this report is based was supported by federal funds provided by the United States Department of the Interior, as authorized under the Water Research and Development Act of 1978, through Agreement No. 14-31-0001-3556.
URI:
http://hdl.handle.net/10150/306949
Abstract:
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. These watersheds typify various land use patterns in Tucson, Arizona. Annual precipitation of about 11 inches produces annual runoff, as measured at outflow flumes, ranging from 0.44 inches in depth for the rural watershed and 1.10 to 2.10 inches for the urban watersheds. The runoff is produced by as few as 5 runoff events per year in the rural watershed and 16 to 22 events per year for the urban watersheds. About 60 percent of the rural and 50 to 58 percent of the urban annual runoff events occur in the summer season, as does 55 to 65 percent of the annual volume of measured runoff for both. 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. Initial field treatment and exploratory laboratory studies of treatment methods indicate that three days is an optimal length of time for detention storage of storm runoff, reducing average pollutant concentrations to 62 mg/1 of turbidity, total coliform of 70-3,200 organisms per 100 ml, and 7 mg/1 of chemical oxygen demand. Simple laboratory treatment with alum and polyelectrolyte yielded an 80 percent reduction in COD, 90 percent reduction in bacterial loading, and appreciable clarification of the runoff samples. Multi-purpose urban storm runoff management systems can be developed to control floods while at the same time maintaining water-based linear parks along minor stream channels in semiarid regions. Multi-purpose systems are more economical than the single-purpose systems required to accomplish the same purposes. Further studies are needed to characterize the quality of storm runoff from selected urban land use areas with a view toward on-site control and disposal.
Language:
en_US
Keywords:
Urban hydrology -- Arizona -- Tucson.; Water resources development -- Environmental aspects -- Arizona -- Tucson.; Urban runoff -- Arizona -- Tucson.

Full metadata record

DC FieldValue Language
dc.contributor.authorResnick, Sol D.en_US
dc.contributor.authorDeCook, K. Jamesen_US
dc.contributor.authorPhillips, Robert A.en_US
dc.date.accessioned2013-12-17T01:27:12Z-
dc.date.available2013-12-17T01:27:12Z-
dc.date.issued1983-03-
dc.identifier.urihttp://hdl.handle.net/10150/306949-
dc.descriptionResearch Project Technical Completion Report (B-023-ARIZ) For: United States Department of the Interior, Project Dates: 1971-1973. / The work upon which this report is based was supported by federal funds provided by the United States Department of the Interior, as authorized under the Water Research and Development Act of 1978, through Agreement No. 14-31-0001-3556.en_US
dc.description.abstractRainfall 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. These watersheds typify various land use patterns in Tucson, Arizona. Annual precipitation of about 11 inches produces annual runoff, as measured at outflow flumes, ranging from 0.44 inches in depth for the rural watershed and 1.10 to 2.10 inches for the urban watersheds. The runoff is produced by as few as 5 runoff events per year in the rural watershed and 16 to 22 events per year for the urban watersheds. About 60 percent of the rural and 50 to 58 percent of the urban annual runoff events occur in the summer season, as does 55 to 65 percent of the annual volume of measured runoff for both. 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. Initial field treatment and exploratory laboratory studies of treatment methods indicate that three days is an optimal length of time for detention storage of storm runoff, reducing average pollutant concentrations to 62 mg/1 of turbidity, total coliform of 70-3,200 organisms per 100 ml, and 7 mg/1 of chemical oxygen demand. Simple laboratory treatment with alum and polyelectrolyte yielded an 80 percent reduction in COD, 90 percent reduction in bacterial loading, and appreciable clarification of the runoff samples. Multi-purpose urban storm runoff management systems can be developed to control floods while at the same time maintaining water-based linear parks along minor stream channels in semiarid regions. Multi-purpose systems are more economical than the single-purpose systems required to accomplish the same purposes. Further studies are needed to characterize the quality of storm runoff from selected urban land use areas with a view toward on-site control and disposal.en_US
dc.language.isoen_USen_US
dc.publisherWater Resources Research Center, University of Arizona (Tucson, AZ)en_US
dc.sourceWater Resources Research Center. The University of Arizona.en_US
dc.subjectUrban hydrology -- Arizona -- Tucson.en_US
dc.subjectWater resources development -- Environmental aspects -- Arizona -- Tucson.en_US
dc.subjectUrban runoff -- Arizona -- Tucson.en_US
dc.titleHydrological and Environmental Controls on Water Management in Semiarid Urban Areas -- Phase IIen_US
dc.contributor.departmentWater Resources Research Centeren_US
dc.contributor.departmentWater Resources Research Centeren_US
dc.contributor.departmentDepartment of Civil Engineeringen_US
dc.description.collectioninformationThis item is part of the Water Resources Research Center collection. It was digitized from a physical copy provided by the Water Resources Research Center at The University of Arizona. For more information about items in this collection, please contact the Center, (520) 621-9591 or see http://wrrc.arizona.edu.en_US
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