Q-2, r. 35 - Protection Policy for Lakeshores, Riverbanks, Littoral Zones and Floodplains

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4.3. Measures relating to the low-velocity zones of floodplains
The following are prohibited in the low-velocity zone of a floodplain:
(a)  all structures and undertakings which are not flood-proofed; and
(b)  filling works other than works required to flood-proof authorized structures and undertakings.
Structures, undertakings and works may be permitted in the low-velocity zone of a floodplain if flood-proofing measures other than those listed in Annex 1 have been found to be sufficient in connection with an exemption granted under the Act respecting land use planning and development (chapter A-19.1) by a metropolitan community, a regional county municipality or a city exercising the powers of a regional county municipality.
O.C. 468-2005, s. 4.3.