[J. Thomas Scharf (1886)] Near the north end of the valley that spreads out from this is a road, culvert or arched viaduct, under the conduit. The principal work here is the large arch directly over the gulf. It is eighty-eight feet and the only remaining source was the small amount which was running in Croton River, and which prob-ably did not receive twenty-seven million gallons a day. Since then the lakes, varying in size from fifty to five hundred acres, at or near the sources of many of the tributaries of the Croton, which have their rise principally in Westchester and Putnam Counties — though some of the smaller rise in Dutchess County and within the State of Connecticut — have been drawn down. Two large storage reservoirs have been con-structed near the head waters of the Croton; one at Boyd's Corner, in the town of Kent, Putnam County, and the other at Drewville, in the same county. The DAM AT CltOToN I.AKK. span and thirty-three feet rise, a massive work of stone. This reservoir covers about four hundred acres, and has a storage capacity of about five hundred million