Wetland Pond Design
Wetland Pond Design
(OP)
I am designing a wetland style pond and need to keep the total water inundation time under 72 hours during a 100 year event in order to not kill the plants. The site is about 10 acres and the pond is only about 2-2.5' deep. Using TR-20 with a Huff rainfall distribution, my total time is over 80 hours. Is their anything I can do to lessen the amount of time water is in the pond?





RE: Wetland Pond Design
RE: Wetland Pond Design
RE: Wetland Pond Design
RE: Wetland Pond Design
What kind of hyper sensitive wetland plants are you using that won't die if flooded for 72 hours every 100-years, but will die if flooded for a mere 8 hours longer every 100-years? It seems an arbitrary line in the sand. Perhaps the risk, and potential replacement costs, of some plants dying in the event of the 100-year storm is worth avoiding the added cost of a floodplain study, or culvert replacement project downstream.
What is the factor limiting the design discharge?
RE: Wetland Pond Design
RE: Wetland Pond Design
But even if that point is reached the wetland style plants will establish a "seed bank" which will allow renewal of the wetland plants when conditions are better.
When you say you are designing a wetland style pond, do you mean that you will be planting "plugs" in a 6"-12" depth wet-bottom or seeding a dry bottom basin with wetland plants?
Just as a curiosity, why did you design your pond with only 2-2.5' of bounce?