A CLOMR is required only for those projects that will:
1. BFE/no floodway (demonstrate <1.0 ft increase)
a. A project on a stream or river that has been studied through detailed hydrologic and hydraulic analyses and for which base flood elevations (BFEs) have been specified, but a floodway has not been designated. If the developer/property owner/community proposes to allow development that would result in more than a 1.0 foot increase in the BFE, a CLOMR must first be obtained.
b. 44 CFR 60.3 (c)(10): Result in an increase in the base flood water-surface elevation (WSEL) of greater than 1.00 foot for streams with BFEs specified but no regulatory floodway designated.
2. BFE/floodway (no-rise)
a. The second situation requiring a CLOMR is for a project on a stream or river for which detailed analyses have been conducted and BFEs and a floodway have been designated. If the community proposes to allow development totally or partially within the floodway that would result in any (greater than 0.0 foot) increase in the BFE, a CLOMR must be obtained.
b. 44 CFR 60.3 (d)(3): Result in any base flood WSEL increase from proposed construction within a regulatory floodway.
LOMRs are required under 44 CFR 65.3. (Ord. 710 (part), 2012)