design of retention ponds
design of retention ponds
(OP)
Does anyone have a synopsis or a worksheet about the design criteria for retention ponds?
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RE: design of retention ponds
RE: design of retention ponds
Please pay attention to this matter.
In over 40 years of practice (or should I say career?), I have designed many detention areas and only 1 retention area.
The retention area had no outlet, but had a very porous bottom deep in the ground. It worked very well. Yes, it was an effort to convince the government approving agency that it would work correctly. There was no surface outlet for storm water.
Buy a dictionary, keep it nearby and USE it. Webster's New World Dictionary of American English is recommended, and Webster's Collegiate Dictionary.
RE: design of retention ponds
Having the nickname "chicopee" sounds likes you're maybe 10 mins. away from my office in Granby.
Good luck.
RE: design of retention ponds
RE: design of retention ponds
Sound that if you're in the North, frost action may be causing this de-compaction effect.
The agronomy people appreciate the effect - it naturally loosens and aerefies the soils. Of course, it also pushes rocks upward - thats a phenomenon in itself.
n1cq
RE: design of retention ponds
Down here in the land of few hills and lots of water(Florida), we often have requirements for both retention and detention on the same site. Retention is used primarily for pollution abatement of the first runoff, while detention is used to mitigate downstream peaking affects from the post-development condition.
RE: design of retention ponds
We also use retention and detention. Typically, all development is required to provide 100-year, 2-hour retention. This has a huge effect on reduction of the 100-year discharges downstream. Detention basins are also constructed to further reduce flooding or to handle flows from older developments or undeveloped land which doesn't have the retention basins.