《明史·志·卷六十四》
河渠之水都从平原流入江海，河水缓慢潮水急速，所以，泥沙随着波浪涌来，其势容易淤积。
河浦之水皆自平原流入江海，水慢潮急，以故沙随浪涌，其势易淤。
The water in the river channels flows from the plains into the rivers and seas. The river water is slow and the tidal water is fast, so the silt flows in with the waves and easily leads to silting.