Home WA Government Publications Do I need a permit to interfere with bed and banks of a watercourse? Do I need a permit to interfere with bed and banks of a watercourse? Guidance This tool will help you to determine if your proposed activities require approvals from the Department of Water and Environmental Regulation. Last updated: 6 April 2023 This tool is intended as a guide only. Please download the document below. Documents Do I need a permit to interfere with bed and banks of a watercourse? (PDF, 93.04KB) Sidebar Published 1 March 2023 Provided by Department of Water and Environmental Regulation Share Facebook share(Opens in a new tab/window) Twitter(Opens in a new tab/window) LinkedIn(Opens in a new tab/window) Copy URL