Read "River Patrol" and talk about Lao Huang's main tasks in patrolling the river.

Supervise and ensure the cleanliness of rivers, ensure safety around rivers, collect and deal with problems, promote environmental awareness, and assist other departments.

1. Supervise and ensure the cleanliness of the river: Lao Huang needs to ensure that the river is unobstructed, the water quality is clean, and garbage, debris, etc. are not affected by the water flow.

2. Ensure safety around the river: Lao Huang needs to inspect around the river to ensure that no one drowns or falls into the water. At the same time, he must also ensure the safety of surrounding facilities, such as guardrails, signs, etc.

3. Collection and treatment problems: Lao Huang should actively collect and deal with problems during the river patrol. If problems such as river blockage and water pollution are found, it is necessary to coordinate with relevant departments to solve them in a timely manner.

4. Promote environmental awareness: Lao Huang also needs to promote environmental awareness to surrounding residents, and encourage everyone to jointly maintain the river environment, reduce pollution sources, and maintain the sustainable use of water resources.

5. Assist other departments in their work: Under special circumstances, Lao Huang also needs to assist other departments in their work, such as water level monitoring and water quality testing during flood control and drought relief.