Record Display for the EPA National Library Catalog


Main Title Water quality effects of hyporheic processing /
Author Fernald, Alexander. ; Landers, D. ; Wigington, P. J.
Other Authors
Author Title of a Work
Landers, Dixon.
Wigington, P. J.
CORP Author Corvallis Environmental Research Lab., OR.
Publisher U.S. Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Laboratory,
Year Published 2000
Report Number EPA/600/A-00/026
Stock Number PB2000-107420
Additional Subjects Water quality ; Aquatic habitats ; Willamette River ; Aquatic biology ; Oregon ; Hydrology ; Flow rate ; Ecosystems management ; Surface waters ; Ground water ; Wetlands ; Temperature effects ; Hyporheic processing
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB2000-107420 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 8 pages ; 28 cm
Water quality changes along hyporheic flow paths may have important effects on river water quality and aquatic habitat. Previous studies on the Williamette River, Oregon, showed that river water follows hyporheic flow paths through highly porous deposits created by river channel meandering. To determine water quality changes associated with hyporheic flow, we studied six bar deposits positioned between the river and closed lentic side-channel alcoves. At each site we measured water levels and water quality in river, hyporheic, and alcove water. At all sites we found hyporheic flow paths from the river through the bar deposits to the alcove surface water. At a majority of the sites hyporheic dissolved oxygen and ammonium decreased relative to river water, while hyporheic specific flow rates, hyporheic temperature decreased relative to river water, and there was little change in temperature at the other three sites. Hypoheic changes most affected receiving alcove water quality at sites with fast hyporheic flow rates. Strategies to promote ecosystem functions provided by hyporheic flow should focus on restoring natural hydrogeophmorphic river channel processes to create high porosity deposits conducive to hyporheic flow.
"PB2000-107420." Includes bibliographical references. Microfiche.