Water Quality - Great Miami River Study

Great Miami River Study

The Great Miami River study was conducted in 2013, and a study report titled the Biological and Water Quality Study of Great Miami River and Tributaries 2013 was published in 2014 by MSD's consultant, the Midwest Biodiversity Institute.

The study included the main portion (or mainstem) of the Great Miami River from just downstream of the Hamilton Hydraulic Dam (River Mile 41.5) to just upstream of the mouth of the Ohio River. While the upper portion of the Great Miami River is outside MSD's service area, it was included because of potential influences on the river from the City of Hamilton. The study also included all tributaries within MSD's service area including Pleasant Run, Banklick Creek, Jordan Run, Dry Run and their tributaries. In addition, two waterways outside the MSD service area were included - portions of the Whitewater River mainstem and tributaries and the Paddys Run tributary to the Great Miami River - because of their potential influences on the river.

This watershed covers a drainage area of about 5,389 square miles. The Great Miami River mainstem is impacted by municipal and industrial wastewater discharges along its upper reaches. The lower reaches are rural to suburban in nature and some of its tributary subbasins lie within state and county park and forest lands.

As part of the study, standardized biological, chemical and physical monitoring and assessment techniques were employed using Ohio EPA methods and criteria. Sampling was conducted at 78 sites between June and October (including three reference sites). The biological sampling and analysis was performed by Level 3 qualified data collectors and under a study plan approved by the Ohio EPA.

Highlights of the study are as follows:

  • General Conditions
  • Aquatic Life Use Attainment Status
  • Recreational Use Status

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