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5th Avenue Dam Removal - News & Updates

Home Forums General Columbus Discussion Development 5th Avenue Dam Removal – News & Updates

Viewing 15 posts - 1 through 15 (of 329 total)
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  • #89877
    lazyfish
    lazyfish
    Participant

    soooo, how did this great news fly under the radar

    http://utilities.columbus.gov/content.aspx?id=17304

    The 5th ave damn is to be partially removed (the eastern half) Glass half full for sure. 2011, project to begin (oops) to be finished in 2012! horray. Here’s hoping it actually happens.

    from the city utilities website

    In October 2010, Stantec began preparing construction documents which were completed in May 2011. The project includes removing a portion of the lowhead dam and constructing stream improvements along the Olentangy River from the dam upstream to the Lane Avenue Bridge. The project will help restore natural river function, improve habitat for fish and other aquatic species and improve the riparian corridor. In July 2011, USACOE sent a letter informing the City the project met criteria for Section 404 Nationwide Permit (NWP) #27.

    On-going work includes resolving outstanding floodplain issues associated with restoration of the stream banks with the Federal Emergency Management Agency (FEMA); coordinating construction activities with the university which has and will have numerous construction projects in the area; and finalizing the Ohio EPA environmental covenants among the affected entities. Given the outcome of the flood elevation review, additional efforts may be needed to mitigate the risk of increased flood impacts due to stream channel restoration work.

    Significant project advancement has been made; however, there are several important issues to be addressed before construction can commence.

    Project construction anticipates receiving $500,000 thru the OEPA 319 Grant Program and approximately $3.1 million thru the Water Resource Restoration Sponsor Program. Construction cost is estimated at $5.5 million.

    See project rendering (large file)

    See projected views for completion, 5 years and 25 years after completion

    Any questions or comments can be directed to:

    Columbus Department of Public Utilities

    • George J. Zonders at (614) 645-2926 or by email.

    The Ohio EPA has completed a Limited Environmental Review for this project. The document may be viewed on Ohio EPA’s site or in hard copy from Ohio EPA. If you would like to receive either an electronic copy via e-mail or a paper copy of the document via U.S. mail upon its release, please contact Dan Halterman of Ohio EPA at (614) 644-3658 or by email.

    #477325

    goldenidea
    Participant

    This should be beneficial to those of us who bike on the Olentagy Trail west of Battelle near 5th Ave. That segment of the bike path flooded a lot this past year with all of the rain we got. Without that dam, perhaps the river level will fall a bit keeping the flooding down after large rainfalls.

    #477326

    howatzer
    Participant

    lazyfish said:
    soooo, how did this great news fly under the radar
    http://utilities.columbus.gov/content.aspx?id=17304

    The 5th ave damn is to be partially removed (the eastern half) Glass half full for sure. 2011, project to begin (oops) to be finished in 2012! horray. Here’s hoping it actually happens.

    Where did you get that timeline quote? It’s not on the website and last I heard they were still waiting on funding.

    #477327

    joev
    Participant

    What’s the point of removing half a dam?

    #477328

    johnwirtz
    Participant

    It improves half the water quality.

    #477329

    James
    Participant

    goldenidea said:
    This should be beneficial to those of us who bike on the Olentagy Trail west of Battelle near 5th Ave. That segment of the bike path flooded a lot this past year with all of the rain we got. Without that dam, perhaps the river level will fall a bit keeping the flooding down after large rainfalls.

    Perhaps the path shouldn’t have been relocated from atop the dike, where it never flooded.
    Between the 15 month project of rebuilding Dodrigde over the river that has essentially blocked the trail to the north, to flooding of the path from elevated river levels and the hospital construction flushing drainage water across the trail, trail users seem to be invisible when decisions are made about construction.

    #477330

    groundrules
    Participant

    James said:
    Perhaps the path shouldn’t have been relocated from atop the dike, where it never flooded.

    there’s an exit ramp blocking the levee route now.

    #477331

    Cbusbill
    Participant

    joev said:
    What’s the point of removing half a dam?

    I know a longstanding item on the city’s “wish list” has been to restore the Scioto and/or Olentangy flows to pre-dam status. The goal would be to allow boaters that enter the river at a dock north or south of the downtown area with the ability to travel through the city unabated. Currently, the dams located along the rivers prohibit boaters from traveling more than a few miles in any direction before becoming hemmed in by the damns. Its why you’ve never seen a boat downtown on the Scioto.

    I presume removing half the dam will help keep a semblance of flood control in place, while still helping bring about the uninhibited boating access.

    It would be quite a change to see pleasure boats up and down the rivers…tailgating during OSU football games, for Red White & Boom and other downtown festivals…pretty cool.

    #477332

    rory
    Participant

    Cbusbill said:
    I know a longstanding item on the city’s “wish list” has been to restore the Scioto and/or Olentangy flows to pre-dam status. The goal would be to allow boaters that enter the river at a dock north or south of the downtown area with the ability to travel through the city unabated. Currently, the dams located along the rivers prohibit boaters from traveling more than a few miles in any direction before becoming hemmed in by the damns. Its why you’ve never seen a boat downtown on the Scioto.

    I presume removing half the dam will help keep a semblance of flood control in place, while still helping bring about the uninhibited boating access.

    It would be quite a change to see pleasure boats up and down the rivers…tailgating during OSU football games, for Red White & Boom and other downtown festivals…pretty cool.

    You occasionally see boats downtown, at least near the confluence. The reason why you don’t see them often is that except for the channel it’s really shallow. I’d hit the bottom with my oars every time I went there in my tiny rowboat. On the other hand if you do get your boat down there the smallmouth action is really good.

    It’s going to be interesting to see what surfaces when the water goes down. And unfortunately I doubt there will ever be enough water to tailgate during games. Although I’m no hydrologist without dams I expect it to be about 15 feet wide.

    #477333

    futureman
    Participant

    groundrules said:
    there’s an exit ramp blocking the levee route now.

    …. And that is where the trail was located before the on and off ramp were built from 315 to Cannon drive. They even put a barricade up at King Ave to the old section to make sure no one uses it.

    I doubt this river, post damn removal, would be navigable to anything bigger than a canoe or kayak – It’s very shallow most of the time typically only a couple of feet deep.

    #477334
    lazyfish
    lazyfish
    Participant

    howatzer said:
    Where did you get that timeline quote? It’s not on the website and last I heard they were still waiting on funding.

    from the link @ the bottom of the page on the utilities page. It is the EPA’s
    Limited Environmental Review for this project.

    not sure if the hyperlink copies as the document is a PDF…when will Siri recognize text in PDF format?

    #477335

    Alex Silbajoris
    Participant

    Guts: Ride a barge on a reservoir, and break up the dam.

    #477336
    lazyfish
    lazyfish
    Participant

    alexs said:
    Guts: Ride a barge on a reservoir, and break up the dam.

    very cool! sooo did they finish and remove the whole thing?

    #477337

    Rockmastermike
    Participant

    Cbusbill said:
    I presume removing half the dam will help keep a semblance of flood control in place, while still helping bring about the uninhibited boating access.

    That’s not a flood control dam. It was built to provide a small reservoir of water to run the power plant. The dam provides little if any flood control.

    Removing half a dam is, for the most part, pretty much the same for the water level as removing the entire dam, the water will flow out the opening. Frankly, if they remove the correct half there should be plenty of capacity for the river to flow more or less unimpeded most of the time.

    It’s true that if the water flow becomes great enough it could start backing up at the smaller gap, but (assuming they remove the concrete currently lining the river floor and anchoring the dam) the channel at that point will tend to naturally dig out and become deeper to handle the greater flow through the gap, or could start (slowly) eroding the remaining part of the dam.

    #477338

    Rockmastermike
    Participant

    rory said:Although I’m no hydrologist without dams I expect it to be about 15 feet wide.

    You’re probably about right.

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