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This was very interesting, on the east side of the bridge.
A brick flume designed by Olmsted in 1894 to divert silt in heavy runoff keeping the pond clear. Almost a thousand feet long with an opening of seven feet tapering to about half at the end. Designed to increase the force of water keeping the flume clear. When the stream was flooding the excess water overflowed into a brick chamber with a metal pan. As the pan filled with silt the heavier it became, triggering a lever that closed a valve and diverted the floodwaters into the flume. When the stream returned to normal and no longer entered the chamber, the water in the pan drained through holes in the bottom, and as it rose, the action closed the valve and the stream resumed its normal course.
A brick flume designed by Olmsted in 1894 to divert silt in heavy runoff keeping the pond clear. Almost a thousand feet long with an opening of seven feet tapering to about half at the end. Designed to increase the force of water keeping the flume clear. When the stream was flooding the excess water overflowed into a brick chamber with a metal pan. As the pan filled with silt the heavier it became, triggering a lever that closed a valve and diverted the floodwaters into the flume. When the stream returned to normal and no longer entered the chamber, the water in the pan drained through holes in the bottom, and as it rose, the action closed the valve and the stream resumed its normal course.