Results: Metro Vancouver Irrigation Demand Wet vs Dry Year

What is the variation in irrigation demand between wet and dry years?a) for Metro Vancouver?
a) for Metro Vancouver

Comparison of total irrigation demand in Metro Vancouver under 3 climate scenarios: dry, wet and average years. Reported precipitation is estimation of precipitation during growing season, May-Sept; [2].
There is a 65% increase in irrigation demand between wet (1997) and dry (2003) years and a 30% increases between average (2010) and dry (2003) years.


 

 a) by municipality

Irrigation demand in Metro Vancouver in m^3 by municipality: (top) a wet year (1997) with approximate growing season precipitation equal to 515mm and (bottom) an overall dry year with approximate growing season precipitation 265mm. Area of blue mark proportional to water demand [2].
In both wet and dry years, the Corporation of Delta had the highest irrigation demand, followed by the Municipality of Pitt Meadows, Richmond, the Township of Langley and Surrey.

 

The irrigation demand within each municipality increased by 65-100% in the case of an overall dry year relative to an overall wet year.

Percent increase in irrigation demand (m^3) from wet year (1997) to dry year (2003) by municipality.
Percent increase in irrigation demand (m^3) from wet year (1997) to dry year (2003) by municipality [2].

Table below indicates the irrigated ALR area in each municipality.

 

Irrigated area by municipality (AWDM, 2015).
Irrigated area by municipality [2].

 

Photo credit: Flickr Province of British Columbia

 

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