Lake Kossou
... that many residents who were relocated prior to the filling of Lake Kossou were able to return to their land when the reservoir failed to reach full capacity?
... that many residents who were relocated prior to the filling of <b id="mwCUs"><a href="./Lake_Kossou" id="mwCUw" rel="mw:WikiLink" title="Lake Kossou">Lake Kossou</a></b> were able to return to their land when the reservoir failed to reach full capacity?