People don't know if there is any law that stipulates that they should be fined for growing vegetables by the river.

Law of the People's Republic of China on Water Resources

Article 65 Where buildings and structures that hinder flood discharge are built within the scope of river management, or activities that affect the stability of river regime, endanger the safety of riverbanks and other activities that hinder flood discharge, the water administrative department of the people's government at or above the county level or the river basin management agency shall, according to their functions and powers, order them to stop illegal acts, dismantle illegal buildings and structures within a time limit, and restore to the original state; If it fails to be demolished or restored to its original state within the time limit, it shall be forcibly demolished, and the expenses required shall be borne by the illegal unit or individual, and a fine of not less than 1, yuan but not more than 1, yuan shall be imposed.

without the consent of the water administrative department or the river basin management institution, if a water project is built without authorization, or bridges, wharves and other buildings and structures that block, cross or face the river are built, and river-crossing pipelines and cables are laid, and there are no provisions in the flood control law, the water administrative department of the people's government at or above the county level or the river basin management institution shall, according to its functions and powers, order it to stop the illegal act and go through the relevant formalities within a time limit; If it fails to make up or fails to make up within the time limit, it shall be ordered to dismantle illegal buildings and structures within a time limit; If it is not removed within the time limit, it will be forcibly removed, and the required expenses will be borne by the illegal unit or individual, and a fine of not less than 1, yuan but not more than 1, yuan will be imposed.

if the engineering facilities listed in the preceding paragraph are not built according to the requirements with the consent of the water administrative department or the river basin management institution, the water administrative department or the river basin management institution of the people's government at or above the county level shall, according to its functions and powers, order it to make corrections within a time limit and impose a fine of not less than 1, yuan but not more than 1, yuan according to the seriousness of the case.

Article 66 If any of the following acts is not stipulated in the Flood Control Law, the water administrative department of the people's government at or above the county level or the river basin management agency shall, according to their functions and powers, order them to stop the illegal act, remove obstacles within a time limit or take other remedial measures, and impose a fine of not less than 1, yuan but not more than 5, yuan:

(1) Discarding and piling objects obstructing flood discharge and planting trees and trees and high-altitude trees in rivers, lakes, reservoirs, canals and channels.

(2) Reclaiming land from lakes or river courses without approval.

article 67 where a sewage outlet is set in a drinking water source protection area, the local people's government at or above the county level shall order it to be dismantled and restored to its original state within a time limit; If it fails to be dismantled and restored within the time limit, it shall be forcibly dismantled and restored to its original state, and a fine of not less than 5, yuan but not more than 1, yuan shall be imposed.

those who build, rebuild or expand sewage outlets in rivers and lakes without the examination and approval of the water administrative department or the river basin management institution shall be ordered by the water administrative department or the river basin management institution of the people's government at or above the county level to stop the illegal act and make restitution within a time limit, and be fined not less than 5, yuan but not more than 1, yuan.