Re: Lake Accotink completely drained!!!
Posted by:
Geologist
()
Date: July 12, 2010 10:03PM
ThePackLeader Wrote:
-------------------------------------------------------
> PeaceMaker Wrote:
> --------------------------------------------------
> -----
> > Why not let it be.....
> >
> > Lake or Pond, does it matter?
> >
> > I hope they can fix the dam soon and let others
> > enjoy the park again.
> >
> > One thing is, can they make the water more
> clear
> > or clean the bottom of the lake?
> > I hate it if I can't see too well.
>
> That all depends upon algae growth, depth,
> circulation, headwater source (If applicable), and
> bottom material.
>
> All of the lakes I've seen around here are murky,
> whereas the natural mountain lake in UpState NY
> where my friends live, is in fact crystal clear
> (Even though it goes down to a depth of 40+ feet).
> The difference, is that most of the lakes in
> Reston, VA are man-made, and therefore the bottom
> construct is one of mud, and weeds. The natural
> mountain lakes on the other hand, often have rocky
> bottoms (There is sand in parts, but that is
> simply ground down rock/minerals).
the "murkyness" of a pond/lake has nothing to do with it being natural or artificial, it has to do with the sediment source. accotink is draining the coastal plains, which happens to have a very silty soil horizon. Upstate NY has a very thick soil profile, but a lot of it is glacial till, which doesn't create as much mud. Plus, it flocculates much better than silt.
Mountain Lake is one of two naturally occurring lakes in the state. I can't remember the other one, but it's down by danville. There are also tons of naturally occurring oxbow "lakes" in the state, but since we don't have really sizable rivers in this area, they're not big enough to be considered lakes, much less ponds.