The river has many tributaries that emerge from the west and form narrow basins with long and low ridges forming the dividing line; these tributaries are: Canoe Creek, Gold Run, and Glacier, Dome, Bonanza, Eldorado, Candle Creek, and Minnehaha creeks. Another important stream, which provides for water supply needs of the town, is the Glacier Creek which originates from the eastern slope of Monument Mountain, which is the highest peak in the Fairhaven district. It confluences with the Kiwalik, about above the estuary. The water resource is from limestone springs during the low flow season, which increases substantially from glacial melt during the season.