21. The algae is followed by weeds and ultimately a silting of water bodies. 22. OPIC was concerned about waste dumped into the Ajkwa River, causing silting downstream. 23. Both ports were eventually abandoned due to silting . 24. It was during the de-silting operations that the idol was found buried. 25. Check dams could be designed to create small reservoirs, without possibility of silting . 26. These specially designed devices allow optimal skimming of the water surface and reduce silting . 27. Silting was long considered an insurmountable obstacle to deep-water navigation at Tanggu.28. Rapid silting up also occurred on the beach. 29. Because of the irregular terrain, heavy summer rains often cause erosion and river silting . 30. Both ponds underwent restoration work including de-silting , which was completed in 2013.
