Is Helan Ruyi Lake stagnant?

Ruyi Lake in Helan is stagnant water. According to relevant public information, Helan Ruyi Lake is stagnant water, which refers to a still water body without natural flow, such as swamps and lakes. Ruyi Lake in Helan is artificially excavated, and there is no inflow and outflow channel connected with other water bodies. Even in stagnant water, there are some microorganisms and plankton, but the lack of oxygen circulation in the water body leads to poor water quality, which can not meet the daily drinking and breeding needs of human beings.