This dam on the Yonne river downstream of Gurgy ensures impoundment in the <i>Diversion of the Yonne river</i> of which regulates the course.
<a href="//commons.wikimedia.org/wiki/User:Daniel_VILLAFRUELA" title="User:Daniel VILLAFRUELA"> Daniel VILLAFRUELA</a>.
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>