Trends in Water Allocation Restrictions - Environmental Trends in British Columbia 2002, State of Environment Reporting, Strategic Policy, Planning and Intergovernmental Relations Branch, British Columbia Ministry of Water, Land and Air Protection

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Surface Water Use

•	Percentage of licensed stream length that has water allocation restructions per decade

•	Stream allocation restrictions in British Columbia

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•	Effect of metering on per capita domestic water use

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Status and Trends in Water Use

Licensed Stream Lengths and Water Allocation Restrictions on Streams in B.C. by Decade (1860-2000)
Decade	Kilometres Licensed	Kilometres Restricted	Percent Restricted
1860	861	0	0
1870	2486	0	0
1880	4296	7	0
1890	7032	7	0
1900	10851	7	0
1910	12941	21	0
1920	16493	362	2
1930	18857	854	5
1940	22595	995	4
1950	28082	1712	6
1960	37664	3758	10
1970	47797	7672	16
1980	55526	15118	27
1990	63201	17728	28
2000	63240	17735	28

SOURCE: Ministry of Water, Land and Air Protection, 2001. NOTES: Each bar represents the percentage of licensed stream length that had water allocation restrictions during that decade. The bar for 2000 represents the percentage of licensed stream length that had allocation restrictions during 2000 and 2001. The word “stream” covers all freshwater in British Columbia including rivers and lakes. Restrictions apply to all water upstream of the restriction.