《明史·志·卷六十》
黄河、淮河互相汇合，原来始于清河北二十里的骆家营，又转而向东到大河口汇合于淮河，这就是所说的老黄河。
黄、淮交会，本自清河北二十里骆家营，折而东至大河口会淮，所称老黄河是也。
The Yellow River and the Huai River converged with each other, originally starting from Luojia Camp, 20 miles north of Qinghebei, and then turned east to converge with the Huai River at Dahekou, which is the so-called old Yellow River.