Federal Act
on the Protection of Waters
(Waters Protection Act, WPA)

¹The au­thor­it­ies shall de­cide in each in­di­vidu­al case on the re­quired wa­ter en­dow­ment and any oth­er meas­ures which may be ne­ces­sary to pro­tect wa­ters be­low the point of with­draw­al.

²They may spe­cify tem­por­ally vari­able re­quired wa­ter en­dow­ments. Re­sid­ual flows shall not fall be­low those spe­cified in Art­icles 31 and 32.

³The au­thor­it­ies shall con­sult the com­pet­ent agen­cies be­fore mak­ing their de­cision; in cases where the with­draw­als in ques­tion con­cern hy­dro­power plants with gross pro­duc­tion in ex­cess of 300 kW, they shall also con­sult the fed­er­al gov­ern­ment.