Distribution of heavy-metal loadings to the South Fork Coeur d'Alene River in northern Idaho. Final report

Technical Report · Fri Feb 01 04:00:00 EST 1991

OSTI ID:5193059

Ridolfi, C A

The purpose of the study is to determine the current distribution of metals loadings to the South Fork Couer d'Alene River in northern Idaho. Water quality and flow data obtained from EPA Region 10 for September 1986 and September 1987 are used to determine loadings during the low-flow season. Data from May of 1988 are used to determine loadings for the high-flow season. Total and dissolved loads of arsenic, cadmium, copper, lead, mercury, and zinc are calculated for the river and tributary streams. For the point-source discharges, loadings are calculated using average flow rates and metals concentrations as recorded on monthly NPDES discharge monitoring reports. Diagrams of the South Fork River basin showing sample locations and total metal loadings for cadmium, lead, and zinc are compiled. Because most of the point sources of metals to the South Fork have been effectively controlled, water quality degradation in the basin is in large part a result of non-point sources and remobilization of floodplain and river bed sediment.

• Research Organization: Washington Univ., Seattle, WA (United States). Dept. of Civil Engineering
• OSTI ID: 5193059
• Report Number(s): PB-91-206813/XAB; CNN: EPA-U-913272-01-0
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
ARSENIC
CADMIUM
COPPER
DEVELOPED COUNTRIES
ECOLOGICAL CONCENTRATION
ELEMENTS
EROSION
FEDERAL REGION X
FLOW RATE
IDAHO
LEAD
MERCURY
METALS
MONITORING
NORTH AMERICA
POLLUTION
POLLUTION SOURCES
RIVERS
SEMIMETALS
SOLID WASTES
STREAMS
SURFACE WATERS
TAILINGS
TRANSITION ELEMENTS
USA
WASTES
WATER POLLUTION
ZINC