Federal Act on Forest
(Forest Act, ForA)

Where ne­ces­sary for the pro­tec­tion of hu­man life and sig­ni­fic­ant ma­ter­i­al as­sets, the can­tons shall se­cure ava­lanche, land­slide, erosion and rock­fall areas and carry out tor­rent con­trol works in forests.²³ The meas­ures used should be as nat­ur­al as pos­sible.