Your right on that, as its in a new housing estate. Whereby both banks
come with the property.

Ones of the problems is that the stream was diverted, so they could
built moew houses. But my bets are the stream is trying to get back
to its original course.

It looks like as the most cost effective option is to use wooden
stakes every 750mm and then board up at he back, and rock infill
behind it and the bank. I am told that heavy vaccum tanalised timbers
will last over 10 years.



If the "unregistered" stream is on the boundary between two landowners then
it is up to the "riparian " owners to sort it between themselves.

Regards
Pete
www.thecanalshop.com