Calculating Channel Maintenance and Elevated Instream Flows

Oregon Department of Fish and Wildlife

As water is becoming less available during summer seasons, water managers are putting more emphasis on water storage and allocation during "high water season." While there are established methods and some consensus on how to determine direct fish habitat flows there is less consensus and information on how to set aside elevated flows for channel habitat maintenance and other ecological flow needs. This paper discusses a method which allows for the conditioning of instream water rights based on known processes including channel maintenance flows and ecological trigger flows. In other words, this document provides guidance in allocating peak flows.


George Robison

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License terminated for LeClaire Hydroproject

On Jan 15, 2008, FERC terminated the license issued in 1994 for the proposed 24 MW LeClaire hydro to be located on the Mississippi river, two miles downstream from LeClaire, Iowa and adjacent to Hampton, IL. The proposed project was to be built at the Mississippi Lock and Dam No. 14.The license required the City of LeClaire to start constructing the project two years from issuance of the license.


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See how dams affect rivers

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