due to the non-implementation of watershed management despite the approval of the supply council of mazandaran province. whenever there is a flood, the water will be less, the flood will be less gentle, people can escape or save their property or their life in danger, chief. the department of natural resources and water management of chalros says that for many years, the necessary warning for water management in critical areas has been given, and for its implementation, a water management movement must be created. we found these watershed points and we have to do the same watershed for these biological discussions, but unfortunately the credit does not come. in november of last year , it rained four times as much as the recent flood in the kazem river watershed in the same province, but people's lives and property were spared due to the implementation of watershed management. this sealband was very good. if not, the villages would really disappear. 32 mm in abghiz area of darban it rained, rainfall equivalent to one million cubic meters. this rain entered the challost river and then the caspian sea .