Riverbed water level three-dimensional modeling device

The utility model relates to the technical field of riverbed modeling, in particular to a riverbed water level three-dimensional modeling device which comprises a water quality sensor and an annular air bag, a support is fixed to the top of the annular air bag, one side of the support is rotationally connected with a reel through a rotating shaft, a winding motor is fixed to the top of the support, and the output end of the winding motor is in transmission connection with the reel through a gear set. The reel is wound with a traction rope, a guide pipe is arranged at the bottom of the annular air bag, one end of the traction rope extends to penetrate through the guide pipe and is fixedly provided with a plumb bob, the water quality sensor is fixed to the top of the plumb bob, a water level sensor is further fixedly arranged on one side of the water quality sensor, and a driving motor and a direction steering engine are fixed to the bottom of the annular air bag. Water quality conditions of different water lev