instream flow

Calculating Channel Maintenance and Elevated Instream Flows

Source: 
Oregon Department of Fish and Wildlife
Year: 
2007
Abstract: 

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.

Author(s): 

George Robison

Contact: 
Notes: 
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Key Words: 

Calculating Channel Maintenance and Elevated Instream Flows

Source: 
Oregon Department of Fish and Wildlife
Year: 
2007
Abstract: 

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.

Author(s): 

George Robison

Contact: 
Notes: 
Category: 
Key Words: 

Instream Flow Methodologies and the Law

Year: 
1998
Abstract: 

As a result of past abuses, the Federal Power Act was amended to allow various state and federal resource agencies, among others, to participate in hydroelectric licensing procedures. The first portion of this paper briefly surveys some of the more prominent legislation authorizing state and federal resource agency involvement

Author(s): 

Larson, Marc

Contact: 
Notes: 
Category: 

Ecological and geomorphological concepts for instream and out-of-channel flow requirements

Source: 
Rivers
Volume: 
Vol. 2, pp. 198-210
Year: 
1991
Abstract: 

Healthy fish populations are dependent on streamflow regimes that protect the ecological integrity of their habitat. Fish habitats are the consequence of linkage among the stream, floodplain, riparian, and upland zones, and watershed geography. Fluvial-geomorphic processes form and control fish habitat. Because of this, multiple in-channel and out-of-channel flows are needed to maintain these processes. We present a conceptual methodology for measuring tour types of streamflow regimes: instream flows, channel maintenance flows, riparian maintenance flows, and valley maintenance flows. The combination of these four streamflow types is designed to protect fish and their habitat. Using a case study of the Salmon River near Whitebird, Idaho, we demonstrate how the methodology could be used to develop a multiple flow recommendation. 

Author(s): 

Hill, M.T., Platts, W.S., Beschta, R.L.

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