medhat2The Human Activity and the Environment (HAE) publications (Statistics Canada) bring together a collection of environmental statistics from many sources, and paint a statistical portrait of Canada’s environment. Special emphasis is given to the relationship of human activity to air, water, soil, plants and animals. This analytical article “Freshwater Supply and Demand in Canada” provides information on Canada’s freshwater supply as well as the demands placed on it.

Water Supply

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echodale2bTrends in Water Supply

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ssask1Water Use

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Virtual Water

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strathconapark5bSupply and Demand

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Key Terms

The supply of freshwater, or Canada’s renewable freshwater resources, is represented by water yield. Water yield is the amount of freshwater derived from unregulated flow measurements for a given geographic area over a defined period of time and is an estimate of the renewable water.

Water intake is used as a proxy for demand. Water intake refers to the total amount of water added to the water system of an establishment or household to replace water discharged or consumed. It may be broken down into the amounts withdrawn from various sources (for example, surface water or groundwater) and the amounts used for various purposes, or end uses. It is often also referred to as water withdrawal.

These, and other important terms, are defined in the USGS Water Glossary.