Pond Routing
Pond Routing
(OP)
I have seen the requirements for "Pond Routing" and have found nothing on what pong routing even is. By using various methods you are performing Hydrologic Analysis of an area, but not routing through ponds but rather to possibly a pond or basin. So is there a difference in methods, or does pond routing simply mean routing to an outlet (pond) or are you specifically routing into a pond.
I know HydroCAD has an option for pond routing, and you have the ability to add a pond to a system, so which/what is the pond routing then? What is needed to do pond routing?
I know HydroCAD has an option for pond routing, and you have the ability to add a pond to a system, so which/what is the pond routing then? What is needed to do pond routing?





RE: Pond Routing
By restricting the outlet and providing storage, a pond tends to reduce and delay the peak flow.
One of the most common pond routing procedures if the Storage-Indication Method, but most "level-pool" procedures produce comparable results.
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Peter Smart
HydroCAD Software
www.hydrocad.net
RE: Pond Routing
Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com
RE: Pond Routing
RE: Pond Routing
Based on the estimated size you would do an initial pond design, and then refine the design until it meets your design objectives.
Peter Smart
HydroCAD Software
www.hydrocad.net
RE: Pond Routing
RE: Pond Routing
For example, if you use just a weir outlet, the pond is likely to fill to the spillway before the peak hits, leaving no available storage for peak reduction.
For this reason, most ponds will have more complex outlet structures that allow the lower flows to discharge early in the storm, leaving more volume available to mitigate the peak.
To make matters more complicated, many regulations require peak mitigation for multiple events, which usually results in a multi-stage outlet structure that is optimized for more than one event. When this is required, your stormwater regulations should have recommendations and standards for suitable outlet structures.
I'll let the more experienced pond designers on this forum pick up there...
Peter Smart
HydroCAD Software
www.hydrocad.net
RE: Pond Routing
This appears that detention basins are a lot more complicated than originally thought!
RE: Pond Routing
Wait until there's water quality, min drawdown time, max recovery time, micropools, forebays, littoral shelves, 6 storms to attenuate, and a water balance calculation to show it stays wet during the dry season. :)
Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com
RE: Pond Routing
It does appear you should get someone with expertise in Hydrology and Hydraulics. Aquiring rocket design software would not qualify me for designing a rocket.
From the TR-55 manual regarding it's storage volume calculations: "The procedure should not be used to perform final
design if an error in storage of 25 percent cannot
be tolerated."