Event Title

Urban Influences on Water Quality in the Portneuf River, Pocatello, Idaho

Presenter Information

Richard Inouye

Location

Space Dynamics Laboratory

Event Website

http://water.usu.edu/

Start Date

3-26-2004 10:30 AM

End Date

3-26-2004 10:45 AM

Description

Urban influences on water quality in the Portneuf River, Pocatello, Idaho. Richard Inouye, Center for Ecological Research and Education, Idaho State University Andy Ray, Center for Ecological Research and Education, Idaho State University James Brock, Rapid Creek Research, Boise, Idaho Greg Mladenka, Idaho Department of Environmental Quality, Pocatello Regional Office, Pocatello, Idaho Chris Wilhelm, Center for Ecological Research and Education, Idaho State University Continuous monitoring of water quality during ice-free periods at multiple sites along the Portneuf River revealed significant differences in turbidity at monitoring stations immediately upstream and downstream of Pocatello, Idaho. Turbidity at downstream stations is higher, on average, during periods of spring runoff, and shows significantly more variation on short time scales (minutes to hours). Sediments collected downstream of the City of Pocatello were higher in mineral content, probably because of sand that is spread on city streets during the winter. We measured suspended sediment concentrations as high as 700 mg/l in stormwater drains carrying snowmelt water into the Portneuf River, and conservatively estimated sediment inputs of more than 4,500 kg over a period of two weeks in late February and early March, 2004.

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Mar 26th, 10:30 AM Mar 26th, 10:45 AM

Urban Influences on Water Quality in the Portneuf River, Pocatello, Idaho

Space Dynamics Laboratory

Urban influences on water quality in the Portneuf River, Pocatello, Idaho. Richard Inouye, Center for Ecological Research and Education, Idaho State University Andy Ray, Center for Ecological Research and Education, Idaho State University James Brock, Rapid Creek Research, Boise, Idaho Greg Mladenka, Idaho Department of Environmental Quality, Pocatello Regional Office, Pocatello, Idaho Chris Wilhelm, Center for Ecological Research and Education, Idaho State University Continuous monitoring of water quality during ice-free periods at multiple sites along the Portneuf River revealed significant differences in turbidity at monitoring stations immediately upstream and downstream of Pocatello, Idaho. Turbidity at downstream stations is higher, on average, during periods of spring runoff, and shows significantly more variation on short time scales (minutes to hours). Sediments collected downstream of the City of Pocatello were higher in mineral content, probably because of sand that is spread on city streets during the winter. We measured suspended sediment concentrations as high as 700 mg/l in stormwater drains carrying snowmelt water into the Portneuf River, and conservatively estimated sediment inputs of more than 4,500 kg over a period of two weeks in late February and early March, 2004.

https://digitalcommons.usu.edu/runoff/2004/AllAbstracts/26