甘肃陇南地域偏僻 ,古代学者难以实地考察 ,注解《禹贡》的典籍和记载桓、桓水的地理文献往往出于臆测 ,影响了古籍的学术价值及使用价值。本文以躬身勘访获取的第一手资料为基础 ,结合大量书面文献 ,细心求证 ,基本理清了历代关于桓水、白水、羌水、西汉水等水道记述文字的种种纠葛和有关舛误 Gansu Longnan remote areas, ancient scholars difficult field visits, annotation “Yung” books and record Huan, Huan water geographical literature often out of speculation, affecting the ancient academic value and use value. Based on the first-hand information obtained through the exploration of the bows, this paper, combining a large number of written documents and careful verification, basically sorted out the various disputes and related errors in the account of the watercourses in Huan-shui, Baishui, Qiang-wu and Western Han Dynasties