Waters Protection Ordinance
(WPO)

A change in the bed load budget causes ser­i­ous harm to the in­di­gen­ous flora and fauna and their hab­it­ats if in­stall­a­tions such as hy­dro­power plants, gravel ex­cav­a­tion sites, bed load traps or river con­trol struc­tures al­ter the mor­pho­lo­gic­al struc­tures or the mor­pho­lo­gic­al dy­nam­ics of the wa­ters to their det­ri­ment.