Section 8 requires reservoir managers, where there are two or more of them in respect of a controlled reservoir, to co-operate with each other as far as is necessary to enable all of the reservoir managers for a controlled reservoir to comply with the provisions of this Act. Subsection (2) makes it an offence not to co-operate. Subsection (3) and (4) set out the maximum criminal sanctions associated with that offence. This section applies whether or not a nominee is appointed under section 7.