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Computed daily metallic-contaminant concentrations and loads on the Clark Fork River at USGS streamgages 12324200 and 12324400 near Grant-Kohrs Ranch National Historic Site in southwestern Montana, Water Years 2019-20

Dates

Publication Date
Start Date
2018-10-01
End Date
2020-09-30

Citation

Ellison, C.A., 2023, Water Quality and Streamflow Data for the Clark Fork near Grant-Kohrs Ranch National Historic Site in Southwestern Montana, Water Years 2019 - 2020: U.S. Geological Survey, https://doi.org/10.5066/P9330BXM.

Summary

In 2019, the U.S. Geological Survey (USGS), in cooperation with the National Park Service, initiated a study using surrogate technology to predict real-time metallic-contaminant concentrations (MCCs) in the Clark Fork at two USGS streamgages that bracket Grant-Kohrs Ranch National Historic Site (GRKO) near Deer Lodge, Montana. Clark Fork at Deer Lodge(streamgage 12324200), Mont., about one mile upstream from GRKO, and Clark Fork above Little Blackfoot River near Garrison (streamgage 12324400), Mont., about 12 miles downstream from GRKO property were instrumented with turbidity and acoustic sensors for monitoring the Clark Fork during National Park Service Superfund remediation activities. Time-series data from backscatter signals from [...]

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Attached Files

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GrantKohrsDailyMeanMetallicContaminantsDataSet.csv 370.34 KB text/csv

Purpose

These data were collected in concert with the US Geological Survey's long-term monitoring network (1985 to present) within the 120-mile designated section of the Clark Fork operable unit listed on the Superfund National Priority List. The use of the data includes computing trends in water quality, evaluating variation in water quality during Superfund remediation activities,comparing metallic-contaminant concentrations relative to aquatic life standards, and quantifying benefits from Superfund remediation activities.

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