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smilesforu
08-18-2000, 01:13 AM
Please send a email to help endorse this letter. This is a important fight to save the salmon on the Olympic Peninsula in our lifetime. Send email to commissioners@co.clallam.wa.us


Dear Senator Gorton:
In our commitment to long term planning and implementation of salmon recovery and watershed planning projects, Clallam County is developingits collaberative role in supporting salmon recovery and ecosystem restoration efforts on the north Olympic Penninsula. We have identified, in this developing stage, the importance of providing support for full ecosystem restoration of the Elwha River watershed.

Congress has mandated the full restoration of this ecosystem and its native anadromous fisheries through the Elwha Ecosystem and Fisheries Restoration Act(Public Law 102-495). Consequently, the Department of Interior is moving toward actual removal of both the Elwha and Glines Canyon dams on the Elwha River. This action is due to the uniquiness of the Elwha River and the ecosystem restoration act and does not set a precednt for breaching hydroelectric dams in other areas in Washington.
The Elwha River was historically one of the most productive producers of anadromous salmonids on the Olympic Penninsula, supporting runs of ten different stocks. However, construction of two dams without fish passage facilities restricted fish access to only the lower 4.9 miles of the river. Since construction of the dams, loss of gravel recruitment, woody debris,and alteration of temperature regimes below the dams have degraded the existing habitat conditions to a point that the Elwha River supports only small runs of primarily hatchery-supplemented fish. The majority of the drainage(80 percent)is located above the dams, within the boundries of Olympic National Park, and is in pristine condition. Once accessible, these habitats will be quickly colonized by salmonids.

Cllallam County supports the full restoration of the Elwha River ecosystem and beleive that the removal of both dams is the only action that provides the potential for full restoration. Additionally, we beleive that concurrent removal of the dams presents the most cost effective and ecologically benefical process while resulting least detrimental impacts to exisisting and future fishery and water resources.

The cost associated with removing the Elwha Dam, followed by removal of the Glines Canyon Dam 12 years later, are estimated to amount to an aditional 26.5 million. This action would involve: requiring two contractor stagings, 12 years of additional fisheries monitoring, duplication of fish restoration efforts, and rehabilitation of roads- twice. Regulatory cost will cover at least a 12 year period, with a supplemental EIS immediately required for removal of only the Elwha Dam and another in order to update information following the 12 year period.

We beleive that the restoration of the Elwha River represents a unique opportunity to restore wild salmon stocks on a scale unparalleled on the west coast. Full rsestoration can only occur with the removal of both dams which achieves the goal in the shortest time, with the lowest cost, and with the least enviromental impact.

Sincerly,

Board of Clallam County Commissioners

Tight Lines
Marty


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Marty
Steelheader.net (http://www.steelheader.net/)

Bait O' Eggs
08-18-2000, 06:44 AM
Marty
I little history for you on the Elwha you may or may not know.

I worked for a company that was hired in 1989 (maybe 1990, cannot remember for sure) to do a study on the lower Elwha dam to perform a study on possibly sealing water which was leaking under the dam. I spent about a week doing research and performing some test at the dam. It has been a while, but I seem to remember the dam was leaking something in the 400 gallons per second area. The water is going under the dam and surfacing on the lower side. This is not a lot of water for a dam to leak, but if it is ran thru the turbines it makes quite a bit of extra power. The owner of the dam wanted to capture this water and produce power with it.

After the dam was originally built and the reservoir was was filled, the hydrostatic pressure was more than the soil under the dam could hold and the earth under the dam blew out. Leaving the dam with a huge (40 foot plus) hole under the dam. The dam became a bridge. Crews blasted huge rocks off the canyon walls and pulled them under the dam with cables. The reservoir was filled with smaller cobble like stones and then paved over. The reservoir is paved for like 100 yard from the dam. During our study we found holes (like 8 inch cirles) in the paving which water is rushing under the dam. The reservoir is only about 25 to 30 foot deep because of the fill placed to plug the hole under the dam.

We did some dye test on how long it takes for the water to travel thru this path, trying to determine how to seal the paths. I had a diver put a gallon of (non toxic) die in the water at one of the holes. It took about 1 hour for the dye to appear at the lower side of the dam. When it did appear the entire river turned green for about an hour. I thought I would hear some complaints over that. I am sure somebody thought it was a toxic spill when the river turned lime green.

Their are some photos of the dam when it was a bridge at the Port Angeles Museum.

Our proposal to seal the leaks was beyond their budget and the project never occured. I know back then I heard lots of talk about removing the dam.

All in all, it was a nice week in a beautiful part of the country. I really wanted to work on the project because it would have been several months in paradise. I hope that chunk of concrete gets blown out again.

Bait O' Eggs
08-18-2000, 07:20 AM
Re-thought
It has been a while since I worked on that project and the leakage may have only been 100 to 150 gallons per second. Cannot remember for sure. Worked on a lot of dams and numbers tend to run together after many years. It was at least 100 gallons per second, visible leakage though. I think we made an estimate at what was leaking, which surface under the river and not visible.

smilesforu
08-18-2000, 11:18 PM
Thanks for the info. I like learning about the dams and there history. Its unfortuanate they got built with out fish ladders. The permit they got issued was called a fish trap permit so they could block without passage.

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Marty
Steelheader.net (http://www.steelheader.net/)

Steve
08-19-2000, 11:08 PM
On the Clackamas River in Estacada, PGE is filling the Rivermill Dam full of concrete, haven't heard the reason...but have walked thru the dam several times in the 60's'and 70's the dam was hollow...? But the lake is almost fully filled with silt, not much good for flood control, just cranking out power...maybe if the dam is a solid monolith of concrete it wouldn't be cost effective to remove it...? Go Fish...Steve