Related by context. Frequent words. (Click for all words.) 54 oilsands 54 Fort McMurray 54 Lake Simcoe 54 river 53 Athabasca 52 boreal forest 52 Alberta oilsands 52 headwaters 51 tailings ponds 50 Mississippi River 50 lake 50 rivers 49 lakes 48 tailings pond 48 tar sands 48 creek 48 tributary 47 tributaries 47 Lake Huron 47 oil sands 46 Northwest Territories 46 Songhua River 46 Assiniboine 46 groundwater 46 Sheyenne River 46 watercourse 46 weir 46 St. Croix River 45 Pigeon River 45 aquifers 45 River 45 Lake Sakakawea 45 sediment 45 aboriginal 44 Atchafalaya Basin 44 Poudre River 44 Oilsands 44 caribou 44 Rideau Canal 44 floodway 44 Ganges 44 Innu 43 waterway 43 glacier 43 freshwater 43 Alberta 43 watersheds 43 Kashechewan 43 creeks 43 Nunavik 43 Lake Champlain 43 Lillooet 43 Catawba River 43 fracking 43 waterways 43 River basin 42 aquifer 42 fjord 42 Saguenay 42 Yellowknife 42 Maumee River 42 Mekong River 42 riverbed 42 NWT 42 weirs 42 downstream 42 Sudbury Ont 42 Continental Divide 42 rivers lakes 42 Great Lakes 42 Prairies 42 Saskatchewan 42 Yamuna 42 contaminants 42 underground aquifers 42 Yangtze 42 Pembina Institute 42 Monongahela River 42 Neuse River 41 Inuit 41 Snowy River 41 wetlands 41 estuary 41 Fort McMurray Alberta 41 downriver 41 Seine River 41 Skeena 41 pollutants 41 fecal coliform 41 dioxins 41 tritium 41 river basin 40 Snake River 40 Jim Prentice 40 St. Lawrence Seaway 40 lakeshore 40 Susquehanna River 40 river basins 40 marsh 40 dike 40 Rainy River