Boom Permitting

Before implementation of our designed boom, we had to get the correct permitting for construction in a stream channel and floodplain. After conversing with LFUCG Stormwater department, they said the only concern with the design was whether or not the boom could cause flooding upstream of the installation.

Using a detailed hydrologic model built with ArcGIS and run in HEC-HMS, the 100-year peak flow rate was determined for the culvert conveying water into the pond. The best way to determine if our boom would raise headwater elevation was to model it as a sluice gate, a common flow control hydraulic structure. So with the known depths of our pond, culvert elevations, and the flow rate from HEC-HMS, the sluice gate equation was used and we found that there would be no issue with upstream flooding.

We put together a proposal and submitted to LFUCG. We then had to fill out a floodplain permit application to apply to get an official permit from Kentucky's Division of Water (DOW). We have yet to receive feedback from the DOW, so we were unable to implement the boom in the pond.

A screenshot of the HEC-HMS model used as well as our proposal sent to LFUCG, and DOW permit application are below.