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Which conservation authority covers my Dufferin property?

Short answer

The main conservation authority by area: Orangeville: Credit Valley Conservation (CVC) (100%); Shelburne: Nottawasaga Valley Conservation Authority (NVCA) (100%); Grand Valley: Grand River Conservation Authority (GRCA) (100%); Mono: Nottawasaga Valley Conservation Authority (NVCA) (86.9%, plus CVC, TRCA); Mulmur: Nottawasaga Valley Conservation Authority (NVCA) (100%); Melancthon: Grand River Conservation Authority (GRCA) (55.5%, plus NVCA, SVCA); Amaranth: Grand River Conservation Authority (GRCA) (82.4%, plus NVCA, CVC); East Garafraxa: Grand River Conservation Authority (GRCA) (84%, plus CVC). A permit from the authority is needed for work in a regulated area (O. Reg. 41/24); check its regulation map for the exact property.

Which conservation authority covers my Dufferin property?: sourced figures
MunicipalityConservation authorities (share of area)Permits
OrangevilleCredit Valley Conservation (CVC) 100%Credit Valley Conservation (CVC) permits
ShelburneNottawasaga Valley Conservation Authority (NVCA) 100%Nottawasaga Valley Conservation Authority (NVCA) permits
Grand ValleyGrand River Conservation Authority (GRCA) 100%Grand River Conservation Authority (GRCA) permits
MonoNottawasaga Valley Conservation Authority (NVCA) 86.9%; Credit Valley Conservation (CVC) 6.6%; Toronto and Region Conservation Authority (TRCA) 6.5%Nottawasaga Valley Conservation Authority (NVCA) permits
MulmurNottawasaga Valley Conservation Authority (NVCA) 100%Nottawasaga Valley Conservation Authority (NVCA) permits
MelancthonGrand River Conservation Authority (GRCA) 55.5%; Nottawasaga Valley Conservation Authority (NVCA) 41.1%; Saugeen Valley Conservation Authority (SVCA) 3.5%Grand River Conservation Authority (GRCA) permits
AmaranthGrand River Conservation Authority (GRCA) 82.4%; Nottawasaga Valley Conservation Authority (NVCA) 15.9%; Credit Valley Conservation (CVC) 1.7%Grand River Conservation Authority (GRCA) permits
East GarafraxaGrand River Conservation Authority (GRCA) 84%; Credit Valley Conservation (CVC) 16%Grand River Conservation Authority (GRCA) permits

Shares are approximate areas from the provincial conservation authority boundary layer; checked 2026-10-21.

Common follow-up questions

When do I need a conservation authority permit?

For development, site alteration or interference with watercourses or wetlands in a regulated area mapped by the authority.

Go further

General information only. This is not legal, financial or real-estate advice. Rates and fees change: confirm every figure with the municipality and agency named before you rely on it, and speak to an accountant or lawyer before you sign a lease, buy property or commit money. Free, confidential help: the Orangeville and Area Small Business Enterprise Centre (serves Dufferin County; 519-941-0440 ext. 7310, [email protected]).

Every figure links to its official source. Values not found in an official source say "not found". Data checked 2026-10-21.