Liza Beck is a very erosive and fast-flowing lakeland stream.  A significant barrier ( a weir with 0.8m of hanging water) is formed by the concrete cap over the drinking water main from Cornhow Water Treatment Works.  In partnership with both the Rivers Trust & United Utilities (water company) the eel pas and fish easement were constructed.  In the autumn, following construction, two pairs of salmon were found spawning up-stream the obstruction.

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