A district may cooperate with the United States and this state or any instrumentality, department, agency or political or municipal subdivision of either in the construction, maintenance and operation of flood control projects and the enforcement of this article and regulations adopted pursuant to it. To that end, the district may:
1. Enter into appropriate agreements.2. Acquire and provide without cost to the cooperating entity land, easements, rights-of-way and services necessary for the construction of flood control projects and the regulation of floodplains.3. Hold and save any cooperating entity free from any claim for damages arising from the construction, maintenance and operation of flood control projects and the regulation of floodplains.4. Maintain and operate all works according to regulations prescribed by the cooperating entity.5. Establish and enforce flood channel limits and floodplain regulations, if any, satisfactory to the cooperating entity.