GEOG306 Lecture Notes - Lecture 10: Urban Land, Aquatic Ecosystem, Silt
8 May 2019
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Document Summary
Water quality, runoff and urban land use (ch. Water quality: physical, chemical and biological attributes that affect the suitability of water use for, agriculture, industry, wildlife, public drinking supplies. Water quality characteristics: microbial characteristics, chemical characteristics, physical characteristics, radioactive characteristics. Legislative authority for water quality (ome: ontario water resources act: Minister has supervision of all surface and ground waters in ontario primarily for: regulation of water supply, sewage disposal, environmental protection act. Requires certificate of approval: clean water act. Pollution types: oxygen-demanding wastes, nutrients, sediment, disease-causing organisms, metals, organic compounds, radioactive wastes, thermal discharge. Point source pollution: emanate from specific source, released at known discharge point or outfall, dissolved and biovavailable forms, small volume but high concentration inputs vary due to the cyclic nature of human activity and industrial production. Nonpoint source pollution from diffuse, nonspecific sources: particulate form, less bioavailable, higher discharge but lower concentration, more constant over time. Phosphorus forms and transport pathways: dissolved p forms.
