Waterfall pool sediment removal

Heavy buildup of mud and sediment behind waterfall. During heavy rains, it has been washing into our pond and filling the areas of the pond I excavated in 2021. I rented a Multiquip 3-inch diaphragm pump from United Rentals and, along with my Ryobi 3300 psi pressure washer, got the job done. I would recommend this particular pump for its ability to move diluted materials/solids and capability to"run dry" for short periods with its positive displacement action.