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

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 <ashleyfrohwein@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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