 The waterfront and foreshore of the lake and river are public-access and include extensive migratory wildfowl habitat.Part of it is protected by BC Parks as the Pitt Polder Ecological Reserve.The largest mainland British Columbia lake is Harrison Lake, 60 km to the east, which is the last in a series of north-south lake and river combinations that line the north bank of the Fraser River in its last stretch west through BC's Lower Mainland.