behind a wire fence is a sluice gate. the slide can be set to a certain water level. it holds back the flushes from the sewage system. reservoir as a source of water for making snow on the ski slopes Poster #625288714
behind a wire fence is a sluice gate. the slide can be set to a certain water level. it holds back the flushes from the sewage system. reservoir as a source of water for making snow on the ski slopes Poster #625288714
