Do you like maps? Geosource is a great site. (You have to agree to the terms to continue into the site.) Click on Themes and you will get a clear picture of the rivers, watersheds, conservation areas, and much more in the Township of Langley.
Langley’s watersheds (Source: http://www.tol.bc.ca/)
Township of Langley’s proposal for ALR lots that it wants removed from the ALR