Historic modifications to watercourses such as weirs and culverts took little consideration in the past to the free movement of migratory fish throughout river systems. Current legislation takes a different stance and structures are being modified, bypassed or in some cases completely removed to allow fish passage, in a view to achieving good ecological status.

With experience in both the design and delivery of fish easement projects, Aquamaintain Ltd is well appointed to advise on fish passage options such as technical fish passes, weir modifications and bypass channels using the latest techniques and innovations.