The secretary shall also have the power to establish temporary branch institutions for state correctional facilities in the form of camps for the employment of prisoners therein in farming, reforestation, wood-cutting, land clearing, processing of foods in state canneries, forest firefighting, forest fire suppression and prevention, stream clearance, watershed improvement, development of parks and recreational areas, and other work to conserve the natural resources and protect and improve the public domain and construction of water supply facilities to state institutions.