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Photographs of current situations (upper left) and manipulated photo of simulated situation with weir
removed (lower left). Manipulated photo of future situation with wier removed at 3 m
3
/s (upper right) flow
release (upper right) and 15 m
3
/s (lower right) flow release. All photos from Mandal River. Photo: Berit
Köhler/Hans-Petter Fjeldstad