Tuesday, 18 October 2016

Re: {Tidal Potomac Fly Rodders} C&O canal visibility

Wind absolutely can affect visibility in my experience - I agree with Jeff.  My backyard stream has issues with algae and leaves suspended in the water column, particularly at certain stretches, and I've mentally logged all of the factors that seem to influence it (recent rain, sustained high temps, etc.) and have also noted that wind seemed to be the only one in some cases. 

Got out to one of my favorite tidal spots that requires almost a mile of trudging and saw several very nice LMB, and several snakehead, including a tiny juvenile hiding in some hydrilla.  I was surprised at how much marking the juvenile NSH have on them.  I was only able to catch good numbers of small LMB and yellow perch, nothing serious.  Saw what I *think were a few carp splashing around a bit further out, but I've never seen that before in the fall and can't confirm what it was.  Just a guess. 

Doubt I'll get out again for the next 6 months ;). 

Gene

On Tuesday, October 18, 2016 at 1:08:27 PM UTC-4, Jeff Silvan wrote:
I've never been able to figure out what drives visibility in the canal. I do know two things impact the visibility: 1. Feeding fish will quickly give you less than two inch visibility. 2. Shallow water sections that have fish will mud up the water quickly with their movement. 

But, when the entire canal (versus a small portion) is chocolate milk, I haven't come up with a good explanation. I've seen days immediately after rain have both muddy and clear water. I've seen levels rise/fall with the same results. The best conjecture I have is wind. It seems slightly more consistent that with a windy day, it blows the water around and stirs everything up. That doesn't explain terrible visibility conditions on days where it hasn't been windy for a while though. The algae likely impacts it this time of year, but it doesn't explain the terrible days in early season before blooms of significance would occur.

On Tue, Oct 18, 2016 at 1:02 PM, Ashley Frohwein <ashleyf...@gmail.com> wrote:
I chased some carp on Sunday - I saw maybe 5 - but the visibility was horrible. I believe this was because of algae blooming. Thoughts on alternative explanations? Will this go away after the first freeze? Won't the carp as well?

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