Barbs and Backlashes


Reservoir Updates, September 15, 2010 by whitetips
September 15, 2010, 2:55 pm
Filed under: Fishing | Tags: , , ,

Some quick updates on a couple of habitat rehabilitation projects.  First of all, if you are not familiar with our Aquatic Habitat Program, please take a few minutes to learn about it, it is your money, you should know how we are using it, http://outdoornebraska.ne.gov/fishing/programs/aqhabitat/ .  A month ago I gave a quick update on some aquatic habitat rehabilitation projects, https://barbsandbacklashes.wordpress.com/2010/08/09/reservoir-updates-august-9-2010/ and right now I would like to add a few details.

Hedgefield

The aquatic habitat rehabilitation project at Hedgefield Reservoir south of Lincoln is basically done.  The contractors are cleaning up a few things, and doing some finishing touches, but basically the project is complete.  I slipped out there a couple of weeks ago and took a few pictures.  Here is an aerial overview of the project.

And here are some shots taken from the ground.  This is the view towards the dam from the boat ramp jetty.

The boat ramp jetty has railing.

And here is what the new boat ramp and parking lot looks like.

South of the boat ramp there is a series of jetties along the west side.  There are crushed rock walkways that lead to the jetties.

And from there you can see the east shoreline.

There were 70,000 cubic feet of sediment removed from Hedgefield and you can see that much of that was removed in the lower, northern half of the reservoir.  What the first aerial photo does not show you is that there was a silt retention structure built in the upper end of the reservoir and some more sediment was removed there.

Here is a view of the silt retention dike in the upper end of the reservoir, looking north towards the dam.

And here is the view back to the south showing the rest of the sediment that was excavated above the silt retention dike.

When we do an aquatic habitat rehabilitation project we do NOT necessarily have a goal of making those waters as deep as possible.  Yes, we have many reservoirs that have experienced siltation over time and we can improve the habitat and water quality by removing that silt.  But we also want shallow water as those areas are productive and also provide excellent fish habitat.  So, our goal in an aquatic habitat rehabilitation project is to create a diversity of habitat, both deep and shallow water.  On any reservoir rehabilitation project one of the most expensive parts of the project is silt removal and there is always the issue of what to do with the silt/spoil material.  I hope you keep those things in mind and that you can see that there is going to be a great diversity of habitat at Hedgefield.

You can also see that there is quite a bit of water back in Hedgefield and we may begin stocking fish there yet this fall.

Iron Horse Trail

The aquatic habitat rehabilitation project at Iron Horse Trail reservoir near Dubois is also progressing, but not quite as far as Hedgefield.  It has progressed to the point that the Nemaha Natural Resource District, http://www.nemahanrd.org/ , is inviting folks to attend an open house this coming Sunday to see what has been accomplished.  Fish stocking will not be done at Iron Horse until sometime next year.

Lewis & Clark Reservoir

This is not new news, but I have not mentioned it until now.  The Miller Creek access area on Lewis and Clark Reservoir is now closed for improvements.  Over the years there has been significant shoreline erosion on Lewis & Clark and sediment from that erosion is carried laterally down a shoreline by wind and wave action.  Sediment is carried down a shoreline until it comes to the mouth of a bay or cove where that sediment is deposited.  With enough sediment deposition at the mouth of bays those areas can become isolated from the main body of the reservoir.  This has happened at Lewis and Clark as the opening of the Miller Creek area has filled with shale and sediment.  That sedimentation not only isolates important bay habitat from the reservoir it can also prevent boat access from a boat ramp located within the bay.  The current improvement project includes construction of three rock jetties that will decrease erosion, provide fish habitat and ensure proper bank stabilization. Other work includes a new boat dock and ramp and improved parking.  Work should be completed by the end of the year.

That is all the updates I have for now.  The only other thing I want to say is “Thank you for your support”!

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2 Comments so far
Leave a comment

Daryl… Any news or info, or web-site that would provide information regarding the proposed new dam site at 168th & Fort?

Thanks!

Comment by Bob C.

I sent Bob an e-mail on this, but in case any of the rest of you are interested, I found some information on the proposed flood control reservoir that Bob referred to. You can find some information on that project here, http://www.papionrd.org/about_nrd/documents/SpectrumNewsletter_Fall09.pdf . That project is in the early planning stage and if it happens will still be years from now.

Daryl B.

Comment by whitetips




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