Effect of change of dam discharge rate

I heard some rules that seasoned fishermen use to decide whether fish under the dam.

A common one is that fishing will be good after dam reduce discharge rate. Take Lake S dam in Texas as an example, a few weeks ago, the discharge rate was reduced from 960 cfs to 660 cfs, the crappie fishing was very hot for a few days, quite a few people was able to limit out.

My question is why the fishing is good when discharge rate was reduced. On the contrary, I heard that fishing would be tough when discharge rate was increased. I am also wondering why.

Greatly appreciate if someone can explain typical pattern under the dam using discharge rate as the main factor.

Thanks.


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Crappie usually look for current brakes .

I'm surprised this thread hasn't attracted more attention. We can be fairly certain "slowly rising and warming water, mild weather, and light wind" are perfect spring conditions. You can find the website by searching for the quote.

This is an interesting topic and I will post more as I find articles.

If you're fishing "below" the dam, the increase in discharge rate indicates an increase in current ... and Crappie are prone to staying out of heavy current, seeking current breaks or eddy pools.

Also, the slower the current, the easier it is to position your bait for proper presentation ... and you can use lighter weights/size baits & still maintain proper depth.

Current, caused by increased/decreased outflow thru a dam, can also be a factor in the positioning (& biting mood) of fish in the lake above the dam.

the reduction of current allows more eddy /slack water .

I believe any/all changes in current flow and/or weather conditions, prompt crappie (and most other game fish) to modify their normal activity level. Up or down. It's our job to figure out which it is at any given time. There are no "rules" when it comes to fishing. Just as there is no best presentation. It's all about trial & error and for an angler to be open minded enough to keep trying different things, to narrow down the "rules" of the day.

Bottom line is crappie do not like current.