GEO 131 Lecture Notes - Lecture 3: Lake Ontario, Storm Drain, Urban Density
21 Sep 2016
School
Department
Course
Professor
Document Summary
Geo 131 guest lecture on urban watershed. All the land that drains to a specific point. Watersheds have boundaries: defined by the shape of the surface. All the rain that falls within the watersheds boundaries runs to the point at the bottom of the watershed. Watersheds are only on land: ex. The land surrounding lake ontario is a watershed because the water on the land contributes to the lake. Flows into lakes, st lawrence then atlantic: toronto: Primary ocean watersheds of canada: into the pacific, arctic, hudson"s bay, atlantic ocean, gulf of mexico. Various uses: wildlife relies on green space for habitat, urban waterways are a good place for recreation, rivers in urban areas can provide power (not toronto) Relationship with watershed based on subsistence needs and cultural values extending back thousands of years. Our waterways are strangled and our land is paved over. Watershed is paved over cannot be absorbed in land go-down storm sewer grates.
