Differences

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--- dry_pond [2022/05/16 11:21] – created admin
+++ dry_pond [2025/02/14 10:47] (current) – megan_duffy
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 ====== Dry Pond ======
-A dry pond temporarily retains stormwater and gradually releases it to a conveyance structure (refer to [[Grassed Swale]], [[Lined Waterway or Outlet]], or [[Subsurface Drain]]).  Its purpose is to reduce stormwater peak flow rates and trap sediment particles.  By trapping sediment, associated pollutants are also removed.  Dry ponds are designed to drain completely within 48 hours of the storm event.
+A dry pond temporarily retains stormwater and gradually releases it to a conveyance structure (refer to [[Vegetated Swale]], [[Lined Waterway or Outlet]], or [[Subsurface Drain]]).  Its purpose is to reduce stormwater peak flow rates and trap sediment particles.  By trapping sediment, associated pollutants are also removed.  Dry ponds are designed to drain completely within 48 hours of the storm event.
 :!: **Dry ponds may only be used to treat sediment in thermally sensitive watersheds**, as they do not increase the temperature of runoff, but are not as effective at removing sediment as a [[wet pond]]. They are highly susceptible to the resuspension of trapped particles due to turbulence along the pond bottom.
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   *Generally not practical in areas where the drainage area is less than 10 acres
   *Accumulated sediments may be resuspended if not removed between storm events
+{{ :wiki:images:schematics:dry_pond_schematic.png?800 |}}
 =====Design=====