HomeMy WebLinkAboutPOWERHOUSE 2 - PDP220006 - DOCUMENT MARKUPS - ROUND 2 - DRAINAGE REPORTThis basin will generally drain via overland flow to the property adjacent to the west ost
NORTHERNENGINEERING.COM | 970.221.4158 PRELIMINARY DRAINAGE REPORT: Powerhouse II
FORT COLLINS | GREELEY 3 | 10
C. FLOODPLAIN
The Powerhouse II project is located within a FEMA Special Flood Hazard Area for the
Cache la Poudre River (Poudre River). Most of this area is designated as With Base Flood
Elevation (BFE) or Depth in Zone AE on FIRM Panel 08069C0997G, effective June 17, 2008.
Therefore, most of the property falls inside the regulated 100-year floodplain. Chapter 10 of
the City of Fort Collins Municipal Code regulates critical facilities within this Flood Hazard
Zone. However, no critical facilities are proposed.
It should be noted FEMA is currently remapping the Poudre River. Anderson Consulting
Engineers (ACE) will provide the updated floodplain modeling, mapping, and report for the
site when completed. It is assumed the project site will continue to be located within the
updated 100-year floodplain. To ensure the proposed buildings have adequate flood
protection, the finished floors and all ductwork, heating, ventilation, electrical systems, etc.,
will be elevated 24-inches above the new Base Flood Elevation (BFE). This elevation is
known as the Regulatory Flood Protection Elevation (RFPE). The RFPE = BFE + 24 inches.
Figure 4 – Area Floodplain Mapping