FYI:
http://www.metrovancouver.org/services/parks_lscr/lscr/Pages/default.aspx
Due to a rockslide in the Seymour River, expect extensive trail closures in the following areas:
Fishermans Trail, Homestead Trail, Twin Bridges Trail, Riverside Drive, Hyannis Point, Circuit 8, Incline Trail and east side trail network.
http://mtbtrails.ca/ Author of Locals' Guide to North Shore Rides and Locals' Guide to Fraser Valley Rides.