River habitat assessment and restoration in high dam flood discharge systems with total dissolved gas supersaturation

·The habitat quality identified by traditional models is lower than that obtained by our framework.·Available habitats were present on both sides of the river, although the total dissolved gas supersaturation level was evenly mixed laterally.·Habitat assessment in periods of high dam flood discharge must consider the interactions between total dissolved gas supersaturation and hydrodynamics.·Habitat suitability is a valuable metric for recognizing potential priority areas for restoration.·In-stream engineering measures are suitable for river restoration in cases with multiple stressors.