For water withdrawals which are subject to an environmental impact assessment (EIA), the residual flow report is part of the environmental impact report (Art. 33 para. 4 WPA).
For water withdrawals on which the federal government must be consulted and which are not subject to an EIA, the authorities shall ensure that the opinion of the cantonal expert body on the residual water report or on an amended draft thereof is made available to the FOEN. The FOEN may limit itself to making a summary review of the documents.46