If you are building or developing near a stream or watercourse, you may need a Minor Development Permit.
The Official Community Plan designates Development Permit areas with defined guidelines respecting the following:
a) Protection of the natural environment, its ecosystems and biological diversity;
b) Protection of development from hazardous conditions;
c) Protection of farming;
d) Revitalization of an area from which a commercial use is permitted;
e) Establishment of objectives for the form and character of intensive residential development;
f) Establishment of objectives for the form and character of commercial industrial and multi-family residential development.
Minor Development Permits: includes all multiple family residential applications containing less than ten (10) dwelling units in total, the subdivision of land, natural resource preservation (which may include a variance), local convenience stores, commercial and industrial applications for less than 92.9 square meters (1000 square feet).
If you are developing near a stream or water course you may need to apply for a development permit.
Link to Development Permit application: Development Permit Application