《水经注·卷三十七》
沅水继续往东流经临沉县城南边，县城南临沅水，因此得名。王莽把临沉改名为监沉。
沅水又东径临沅县南，县南临沅水，因以为名，王莽更之曰监沅也。
The Yuan River continues to flow eastward through the south of Linchen County. The county seat faces the Yuan River in the south, hence the name. Wang Mang changed the name of Linchen to Jiansen.