]> 2026-04-14T03:24:59+00:00 Case study:Rehabilitation of the river Segeråga 500 en Plan for rehabilitation of the river Fish biological survey Survey of physico-chemical quality elements and biology No Yes No Awaiting results No Fish: Abundance,Yes,No,No,Yes,No,Awaiting results Fish: Age structure,Yes,No,No,Yes,No,Awaiting results Invertebrates: Diversity,Yes,No,No,Yes,No,Awaiting results Invertebrates: Abundance,Yes,No,No,Yes,No,Awaiting results Fish: Abundance Fish: Age structure Invertebrates: Diversity Invertebrates: Abundance Yes Rødøy Norwegian Institute for Nature Research (NINA) No No No No Yes No Awaiting results Yes Substrate conditions,Yes,No,Yes,No,No,Awaiting results Width & depth variation,Yes,No,Yes,No,No,Awaiting results Substrate conditions Width & depth variation No Removing inorganic material.JPG After measures in the lower part of river.JPG Excavation of sediment ponds.JPG Sediment pond after measure.JPG Excavation of sediment pond in the middel part.JPG Sediment pond in the middle part after measure.jpg Construction of fishing ladder.jpg Fish ladder after measure.JPG Digging of ditches and reinforcement of ditches.JPG After digging of ditches and reinforcement of ditches.jpg Gravel for spawning grounds.jpg Removing inorganic material (sludge/fine sand. Photo: Kjetil Hansen, Rødøy municipality After removal of the inorganic material (sludge/fine sand), reinfoorcement of river bank and gravel for spawning grounds. Photo: Kristin B. Klausen, local watercoordinator. Excavation of sediment ponds in the upper part of the river. Photo: Kjetil Hansen, Rødøy municipality Sediment pond. Photo: Kjetil Hansen, Rødøy municipality Excavation of sediment ponds in the middle part of the river. Photo: Kjetil Hansen, Rødøy municipality Sediment ponds in the middle part of the river after measure. Photo: Kristin B. Klausen, local watercoordinator. Construction of fishing ladder. Photo: Kjetil Hansen, Rødøy municipality Fish ladder after measure. Photo: Kristin B. Klausen, local watercoordinator. Digging of ditches and reinforcement of ditches. Photo: Kjetil Hansen, Rødøy municipality After digging of ditches and reinforcement of ditches. Photo: Kristin B. Klausen, local watercoordinator. Gravel for spawning grounds. Photo: Kristin B. Klausen, local watercoordinator. 66.718760484551,13.285174363051 Kjetil Rødøy Hansen ,, ,,, 26138 Norwegian Institute for Nature Research (NINA), No Yes No Awaiting results No Nutrient concentrations,Yes,No,No,Yes,No,Awaiting results PH,Yes,No,No,Yes,No,Awaiting results Nutrient concentrations PH Yes In progress Rehabilitation of the river Segeråga rehabilitation of the river segeråga Environmental flows and water resources Flood risk management Habitat and biodiversity Hydromorphology Water quality 2020-10-29T12:45:40Z 2459152.031713 2021-02-17T13:30:32Z 2459263.0628704 Rehabilitation of the river Segeråga