Easier to find a mate and spawn. Gizzard Shad are external fertilizers. Female drops eggs at the top of the water column and males fight to fertilize them at the surface. Slow water prevents eggs from washing away before they can be fertilized and sink and stick to a substrate where the embryo will form.
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I'd be interested if someone a lot smarter than me has thoughts on why all the shad were in the creek rather than the Potomac. My non-bioligist thoughts are that the potomac under the bridge starts to get full of rapids for really the first time. Normally they can swim through it, but the water was running to fast for them, so everybody took shelter in the creek waiting for the river to slow.--Or I completely off base.
On Thursday, April 23, 2015 at 7:31:28 AM UTC-4, TurbineBlade wrote:Patrick -- that's a pretty selfless sharing of knowledge. If I were you, I'd write down the date, temperature, wind, little falls + point of rocks water data and refer back to it in the event that you get a similar weather pattern in the future. It could be a good place to keep in your back pocket after spring rain during the shad run.Trust me -- I've recorded birding and fishing data regularly for 3 years now. You will NOT remember by next year if you don't write it down. Well, you won't recall enough detail for it to be useful anyway ;)Gene
On Wednesday, April 22, 2015 at 9:25:52 PM UTC-4, Patrick Reilly wrote:Headed up to Chain Bridge today late afternoon to fish the shad run under the bridge. When I showed up the entire spot was washed out as the Potomac was running high and fast. Turns out all the shad were in Pimmit run (see photo). So many that 5,10 of them were breaking the surface at any one time. Using some unorthodox casting, managed to get a great two hours in. Couldn't hear the traffic over the rush of the water and there wasn't another person there. Looked like a beautiful hole up in the Shenandoah. There were so many fish and such a small area that almost every cast had at least a nibble. I foul hooked about a dozen fish because I'm not very good (and the fish were so thick). But caught one 13 inch shad in the mouth. Used a 4 wt sink line on a Clearwater rod with beer-tie shad flies. I tried 3 different flies and all of them had nibbles and foul hooks. Not sure if the fish will head out of the creek once the water drops, but if you can make it out tomorrow morning, I highly recommend it.
http://www.tpfr.org
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