| 31. | Huge mounds of silt are next to rows of crops.
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| 32. | Flooding leaves behind silt that undermines the productivity of farmland.
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| 33. | They also warn pollution and silt will back up behind the dam.
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| 34. | Officials have not plugged leaks nor cleared silt-clogging mountain reservoirs.
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| 35. | During winter rains, streams deposited silt and sand atop the asphalt.
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| 36. | The helicopter is mired in silt several meters ( yards ) deep.
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| 37. | Sand and silt has partly buried some of the ships.
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| 38. | But the silt prevented them from getting a good picture.
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| 39. | The soil composition typically contains sand, silt and clay.
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| 40. | Over time the strait began to collect silt and earth.
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