Thanks for the comments, understood HydrologyStudio & cvg. I'm still unsettled in mind why a municipality would want to be more restrictive on peak discharge than the state.
All the draft legislation the the DNR provides to municipalities, and even the extremely urban areas (this particular...
Are you looking for a specific data set from that jurisdiction? Sorry if you are already familiar with this, but here is a link to NOAA's storm events
https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_map_cont.html
If you don't have the surface land space to do a sediment trap before it enters the stormwater piping system, you could consider a vortex manhole. Something like this I found from a quick google search, there are several on the market:
https://www.hydro-int.com/en/products/first-defense
But...
In Wisconsin, the DNR requires post-construction peak discharge at or below the predevelopment 100-yr, 10-yr, and 2-yr, 24-hr frequency storm events. I'm currently working in a municipality that has a more restrictive ordinance, that the 100-year post-development runoff event must be stored and...
