《明史·志·卷六十》
新河宽二十余丈，深仅一丈左右，与故道相比只有三十分之一，哪里能容纳全河之水呢？
夫新河阔二十馀丈，深仅丈许，较故道仅三十之一，岂能受全河之水？
The new river is over twenty Zhang wide and only about one Zhang deep, which is only one-thirtieth of the old river. How can it accommodate the water of the whole river?