It serves as the primary drinking water source for Portland, Oregon and rates highly as an oligotrophic lake, providing a very clean source of water.
It rates highly as an oligotrophic lake, providing a very clean source of water. It serves as the primary drinking water source for Portland, Oregon.
It serves as the primary drinking water source for Portland, Oregon. It rates highly as an oligotrophic lake, providing a very clean source of water.
It serves as the primary drinking water source for Portland, Oregon. It rates highly as an oligotrophic lake, providing a very clean source of water.