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culverts as migration barries for fish templates for inspections 22.11.2017 Markku Seppänen

culverts as migration barries for fish

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Page 1: culverts as migration barries for fish

culverts as migration barries for fishtemplates for inspections22.11.2017 Markku Seppänen

Page 2: culverts as migration barries for fish

Urho Kekkonen National Park- LIFE-program• Survey on the culverts: amount and

location

• • Assessment of the hindrance

• assessment of the natural state of the river both under and above the culverts

Page 3: culverts as migration barries for fish

Headwatersof River Lutto

Research area

Page 4: culverts as migration barries for fish

Classification• Channel restoration

• Flow rate reduction inside culvert

• Immersion of culvert

• Culvert renawal

Page 5: culverts as migration barries for fish

69 crossing

47 renewal

5 flow rate, restoration

17 ok

Results