《宋史·列传·卷一百四十五》
处州多山田，梁天监年间，詹、南二司马在松阳、遂昌之间修建了通济堰，湍急的溪水流到四十里外，灌溉农田二十万亩。
处多山田，梁天监中，詹、南二司马作通济堰在松阳、遂昌之间，激溪水四十里，溉田二十万亩。
There are many paddy fields in Chuzhou. During the reign of Emperor Liang Tianjian, the two Sima, Zhan and Nan, built Tongji Dam between Songyang and Suichang. The turbulent stream flowed 40 miles away, irrigating 200,000 mu of farmland.