Before revision: upright=1.25|Siltation of a waterway Siltation, or siltification, is water pollution caused by particulate terrestrial clastic material, with a particle size dominated by silt or clay.
After revision: upright=1.25|Siltation of a waterway Siltation, is water pollution caused by particulate terrestrial clastic material, with a particle size dominated by silt or clay.