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GEOREF RECORD

Legacy deposits, milldams, water quality, and environmental change in the Four Mile Creek watershed, southwestern Ohio

Jason A. Rech, Bartosz Grudzinski, William H. Renwick, Christina N. Tenison, Marvi Jojola, Michael J. Vanni and T. Race Workman
Legacy deposits, milldams, water quality, and environmental change in the Four Mile Creek watershed, southwestern Ohio (in Ancient oceans, orogenic uplifts, and glacial ice; geologic crossroads in America's heartland, Lee J. Florea)
Field Guide (Geological Society of America) (December 2018) 51: 113-144

Abstract

Streams in the Midwest of the United States have experienced major changes in their watersheds since European settlement that have altered sediment loads, runoff, nutrient concentrations, and the abundance of woody debris. Moreover, the near extirpation of keystone species such as beaver, and the construction of dams and impoundments (e.g., milldams, causeways, reservoirs, small ponds, etc.), have had impacts on the entrainment of sediments, the connectivity between tributaries, main channels, and floodplains, and channel form. As stream restoration efforts increase, how do we restore streams to their 'natural' state? Can streams restored to a pre-European settlement condition maintain equilibrium under current land use? Here we examine the impact of post-European settlement changes to a small (432 km2) watershed in southwestern Ohio that is largely representative of rural watersheds in the Midwest. We examine the impact of nineteenth-century milldams, report the results of a 21-year study of nutrient and sediment concentrations in the upper portion of the watershed during a shift from conventional to conservation tillage, and assess the potential impact of the return of beavers on stream sediment and nutrient concentrations. Our objective is to understand how streams have been impacted by humans over the past 250 years, and to identify strategies for 'restoring' streams in the Midwest.


ISSN: 2333-0937
EISSN: 2333-0945
Serial Title: Field Guide (Geological Society of America)
Serial Volume: 51
Title: Legacy deposits, milldams, water quality, and environmental change in the Four Mile Creek watershed, southwestern Ohio
Title: Ancient oceans, orogenic uplifts, and glacial ice; geologic crossroads in America's heartland
Affiliation: Miami University, Department of Geology and Environmental Earth Sciences, Oxford, OH, United States
Affiliation: Indiana University, Indiana Geological and Water Survey, Bloomington, IN, United States
Pages: 113-144
Published: 20181210
Text Language: English
Publisher: Geological Society of America, Boulder, CO, United States
References: 68
Accession Number: 2020-016646
Categories: Environmental geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table, sketch maps
N39°28'60" - N39°32'60", W84°43'60" - W84°40'60"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2020, American Geosciences Institute.
Update Code: 202011
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