I work for the Parks department the dam at Lake Olathe is not the one in question the dam at Cedar Lake has reached its lifespan and they will be working on that dam in the future. With the new master plan for both lakes over the next 10 years there will be changes at both places for the positive. To my knowledge and I will check further but the neither lake has been planned to drain or even drop levels to accommodate working on either dam. When I find out more details I will post it.