Show upside down dam helps curb floods 01 nn 5 61 1 j 4 4 1 4 e im W M N fully I 1 y A ar view of the massive steel gates installed by the westinghouse electrio electric company near pittsburgh pa to prevent floods from entering wd damaging its plants during the lie frequent high waters in the rivers converging in the pittsburgh district when lowered into place these gates gales cause the water to back up behind them the three slant giant pumps force the water through the intakes in lower left where it Is guided around the flood wall and out into turtle creek in back background round over a long spillway |