Portland Land Use Code

Citation: Portland Land Use Code
Parent Document: Portland Land Use Code
Jurisdiction: Portland (municipal)
Original Source: https://www.portlandmaine.gov/asset/a5dcd1dc-4117-40b3-b3da-74a56919e14b ↗

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b. Be limited in size to a one-story two- within the city during the occurrence of
car garage. the base flood discharge.
c. Have unfinished interiors and not be 2. In Zones A and AE riverine areas for which
used for human habitation. no regulatory floodway is designated,
d. Have hydraulic openings, as specified encroachments, including fill, new
in Subsection 12.4.5(N)(2), in at least construction, substantial improvement,
two different walls of the accessory and other development shall not be
structure. permitted in the floodway as determined
e. Be located outside the floodway. in (3) below, unless a technical evaluation
f. When possible be constructed and certified by a registered professional
placed on the building site so as to engineer is provided demonstrating that
offer the minimum resistance to the the cumulative effect of the proposed
flow of flood waters and be placed development, when combined with all
further from the source of flooding other existing development and
than is the primary structure. anticipated development:
g. Have only ground fault interrupt a. Will not increase the water surface
electrical outlets. The electric service elevation of the base flood more than
disconnect shall be located above the one foot at any point within the city.
base flood elevation and when b. Is consistent with the technical criteria
possible outside the special flood contained in FEMA’s guidelines and
hazard area. standards for flood risk analysis and
h. Be located outside the Coastal AE mapping.
Zone. 3. In Zones A and AE riverine areas for which
2. Accessory structures in Zones VE and no regulatory floodway is designated, the
Coastal A shall meet the requirements of regulatory floodway is determined to be
Subsection 12.4.5(R). the channel of the river or other
M. Floodways watercourse and the adjacent land areas to
1. In Zone AE riverine areas, encroachments, a distance of 1/2 the width of the floodplain
including fill, new construction, substantial as measured from the normal high-water
improvement, and other development shall mark to the upland limit of the floodplain.
not be permitted within a regulatory Encroachments, including fill, new
floodway designated on the Flood construction, substantial improvement,
Insurance Rate Map unless a technical and other development shall not be
evaluation certified by a registered permitted unless a technical evaluation
professional engineer is provided certified by a registered professional
demonstrating that such encroachments engineer is provided meeting the
will not result in any increase in flood levels requirements of (2) above. 12-12 | CITY OF PORTLAND LAND USE CODE FLOODPLAIN MANAGEMENT

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