Where flood risk actually shows up first is insurance and financing. A lender or insurer that flags overland flood exposure on a specific Rosewood lot can raise premiums or add conditions well before the next City of Saskatoon assessment cycle catches up, so the practical cost often lands on a buyer or owner before the tax notice does.
If you think your Rosewood property's flood exposure means it is genuinely over-assessed relative to comparable sales, the route is the same as any other appeal: gather comparables and take it to the Board of Revision within the City of Saskatoon's posted window, not wait for the next notice to fix itself.
An assessment reflects the market broadly, not the specific risk sitting on your lot. Get your hand-reviewed valuation from Joel Dyck.