Which method is NOT recommended for the installation of a rock ditch check?

The method of dumping rock is not recommended for the installation of a rock ditch check because it does not ensure proper placement and compaction of the rocks needed to effectively control sediment and water flow. Effective installation requires that the stones be positioned and compacted strategically to form a barrier that can properly slow down water runoff and trap sediment.

Mechanical placement and layering of rocks allow for more precise control over the arrangement and stability of the rocks, which helps ensure that they function as intended to mitigate erosion. Hand placement also provides the necessary attention to detail and allows for adjustments to be made for optimal effectiveness. Dumping, on the other hand, can lead to uneven distribution, voids, and inadequate functionality of the ditch check, defeating the purpose of the erosion control measure.