Event Title

Concurrent Sessions A: Dam Removal III - Dillon Diverson Dam Removal Feasibility Study

Location

Construction & Engineering Hall, Oregon State University

Start Date

25-6-2013 3:10 PM

End Date

25-6-2013 3:30 PM

Description

The Dillon Dam is a fish passage barrier to adult and juvenile salmonids and Pacific Lamprey on the mainstem Umatilla River in eastern Oregon. Analyzing all potential effects related to dam removal should be the first phase of any organization planning to tackle such an undertaking. The effects associated to the Dillon Dam include fish passage, water quality, infrastructure, recreation and economics. In 2012, the Umatilla Basin Watershed Council acquired funding for a feasibility study through the Oregon Watershed Enhancement Board and Oregon Water Resources Department. River Design Group and IRZ Consulting were hired to complete geomorphic and irrigation research. The data gathered to date has shown significant potential environmental benefits related to removal of the Dillon Dam. If the dam is removed, an active irrigation ditch must seek an alternative point of diversion. Multiple options have been considered that include transferring the point of diversion upstream and downstream. There are associated benefits with each proposal that will be discussed in this presentation. At the time this abstract was drafted, this project is in the feasibility study stage preparing to move forward. This is a great educational presentation for others considering removal of a large fish passage barrier.

Comments

Greg Silbernagel graduated from Oregon State University in 2009 with a B.S. in Commercial Recreation Management. Greg resides in Pendleton, Oregon. He is the Executive Director for the Umatilla Basin Watershed Council, serves on the Oregon Department of Fish and Wildlife -Restoration and Enhancement Boardand is Chairman of the Pendleton Tourism and Marketing Committee.

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Jun 25th, 3:10 PM Jun 25th, 3:30 PM

Concurrent Sessions A: Dam Removal III - Dillon Diverson Dam Removal Feasibility Study

Construction & Engineering Hall, Oregon State University

The Dillon Dam is a fish passage barrier to adult and juvenile salmonids and Pacific Lamprey on the mainstem Umatilla River in eastern Oregon. Analyzing all potential effects related to dam removal should be the first phase of any organization planning to tackle such an undertaking. The effects associated to the Dillon Dam include fish passage, water quality, infrastructure, recreation and economics. In 2012, the Umatilla Basin Watershed Council acquired funding for a feasibility study through the Oregon Watershed Enhancement Board and Oregon Water Resources Department. River Design Group and IRZ Consulting were hired to complete geomorphic and irrigation research. The data gathered to date has shown significant potential environmental benefits related to removal of the Dillon Dam. If the dam is removed, an active irrigation ditch must seek an alternative point of diversion. Multiple options have been considered that include transferring the point of diversion upstream and downstream. There are associated benefits with each proposal that will be discussed in this presentation. At the time this abstract was drafted, this project is in the feasibility study stage preparing to move forward. This is a great educational presentation for others considering removal of a large fish passage barrier.