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Lake levels
#12636933
02/20/18 12:25 PM
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Joined: Jun 2016
Posts: 1,514
i-Fish
OP
Extreme Angler
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OP
Extreme Angler
Joined: Jun 2016
Posts: 1,514 |
Similar topics have been discussed but previously I remember it being moderate rainfall in a short period of time. What kind of effect do these locally heavy down pours have on lakes wheb the surrounding ground is dry and hard? Surely the ground cannot keep up with an inch of rain within an hours time and will funnel most of it to the lakes?
If you can't find em wind em.
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Re: Lake levels
[Re: i-Fish]
#12636936
02/20/18 12:35 PM
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Joined: Jul 2005
Posts: 22,930
Hard Rain
TFF Guru
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TFF Guru
Joined: Jul 2005
Posts: 22,930 |
Not all that much for 1" of rain but the lakes really catch much more water when the feeder creeks get flooded but that takes more than 1" of rain.
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Re: Lake levels
[Re: i-Fish]
#12636941
02/20/18 12:44 PM
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Joined: Mar 2015
Posts: 2,120
Brad R
Extreme Angler
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Extreme Angler
Joined: Mar 2015
Posts: 2,120 |
Some ideas for you to consider.
One is there is a test to see how readily soil can absorb water and it is called a percolation test, or perc test. It is used, among other things, to determine design issues/capacities for septic tanks/fields.
One sort of "soil" that can absorb 1" of rain per hour you overlook: a beach on the ocean. Well, that is an overstatement because they are generally close to 100% sand. not so much a complex soil. But, it lets us know that sandy soils will generally absorb more water, pull it off the surface, with less run-off on top of the ground.
Sandy soils, however, do not "hold" water well. It can rain out here on Lake Athens, rain hard, and it'll be dry very fast. Heavy clay soils "hold" water, bind it up. You hear about clay soils ravaging concrete foundations when they expand and contract. It is the water content in them, or lack of it, that causes this expansion and contraction.
Just a generalized observation: sandier more open soils will soak up more water, less run-off . . . but that water will migrate under ground to bodies of water nearby. Heavier soils with lots of clay will often become saturated and the weatherman will call it that. Once soil is saturated, can't hold any more water (or the rain falls in too short of a time for it to do so), you see street flooding . . . run-off. That water ends up in storm sewers, follows gravity, ends up in creeks, lakes, etc.
Speaking of lake effects, many old timers will recall or have read about Lake Arlington, that it was calculated and assumed that once it was impounded it would take several years for it to fill up. It happened in about 6 weeks or so as I recall. More recently, I think Joe Pool Lake filled up way, way ahead of its schedule.
Brad
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Re: Lake levels
[Re: i-Fish]
#12637115
02/20/18 02:46 PM
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Joined: Nov 2007
Posts: 16,047
KidKrappie
TFF Guru
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TFF Guru
Joined: Nov 2007
Posts: 16,047 |
Lakes will come up a couple to a few feet with all of this rain. Ground has been dry but the light rain the last few days has primed it for this rain to run off.
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