Two national parks are partially in the municipality: Saltfjellet-Svartisen National Park in the southwest, and Junkerdal National Park in the eastern part. This makes Saltdal one of the municipalities in Norway with the largest percentage of protected areas within its borders. The river Saltdalselva runs through the valley. The riverbed appears very bright in some places due to the minerals in the sand. The valley is covered with pine forest and birch and other trees are common as well. Lakes in the region include Balvatnet, Fiskeløysvatnet, Kjemåvatnet, and Nordre Bjøllåvatnet. The mountain Ørfjellet is also located in the municipality.