River bank type multifunctional regulation and storage device

The utility model relates to the technical field of municipal buildings, and discloses a river bank type multifunctional regulation and storage device which comprises a water storage tank and a retaining wall. The water storage tank is arranged on a river bank; a first water inlet, a second water inlet and a water outlet are formed in the water storage tank; the first water inlet is communicated with a rainwater pipeline, and the second water inlet and the water outlet are both communicated with a river channel; the water outlet is positioned below the second water inlet; the water outlet is communicated with a check valve; the retaining wall is fixedly connected with the bottom of the water storage tank and the side wall of the water storage tank, and a first area and a second area are defined by the retaining wall and the water storage tank; the retaining wall is lower than the water storage tank; the first water inlet is positioned right above the first area, and the bottom of the first area is communicate