Chicopee River, tailrace, Collins Manufacturing Co., drainage area = 680 square miles, flow in tailrace (visible in photo) = 700 cubic feet per second over dam = 4910 cubic feet per second, total 5610 cubic feet per second = 8.2 cubic feet per second per square mile, head-canal to tailrace = 12.5ft. Wilbraham, Mass., 2:30 PM, Apr. 5, 1933

Chicopee River, tailrace, Collins Manufacturing Co., drainage area = 680 square miles, flow in tailrace (visible in photo) = 700 cubic feet per second over dam = 4910 cubic feet per second, total 5610 cubic feet per second = 8.2 cubic feet per second per square mile, head-canal to tailrace = 12.5ft. Wilbraham, Mass., 2:30 PM, Apr. 5, 1933

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