This means that you will need to apply for consent if you are planning on building a flood defence or carry out any work in an ordinary watercourse.
Golyga hyn y bydd angen ichi wneud cais am ganiatâd os ydych yn bwriadu adeiladu amddiffynfa rhag llifogydd neu wneud unrhyw waith mewn cwrs dŵr arferol.