. Water Supply and Irrigation Papers of the United States Geological Survey . dam builtby the Great Northern Paper Company in the development of theirpower at Milinoket. This dam is about 20 feet high and backs thewater nearly to the North Twin dam, raising the surface of QuaquishLake several feet. WATER POWERS. As has been stated, the elevation of the basin of the Penobscot isnot as high as that of the basins lying farther to the west. At theremote sources of the river, 200 miles by water from the outlet intoPenobscot Bay, the divide averages rjerhaps 1,800 feet above sea the 50 mile
. Water Supply and Irrigation Papers of the United States Geological Survey . dam builtby the Great Northern Paper Company in the development of theirpower at Milinoket. This dam is about 20 feet high and backs thewater nearly to the North Twin dam, raising the surface of QuaquishLake several feet. WATER POWERS. As has been stated, the elevation of the basin of the Penobscot isnot as high as that of the basins lying farther to the west. At theremote sources of the river, 200 miles by water from the outlet intoPenobscot Bay, the divide averages rjerhaps 1,800 feet above sea the 50 miles from the head of the southwestern branch to Chesun-cook Lake there is a descent of about 600 feet, but the stream is smalland practically inaccessible. Below Chesuncook Lake the river falls about 400 feet in less than20 miles before entering Pemadumcook and Twin lakes, but it is in awilderness having no direct railroad communication. Part of thsdistance it flows through a narrow channel with steep and rocky sides, U. S. GEOLOGICAL ,URVEY WATER-SUPPLY PAPER NO. 69 PL. VI. GREAT ARCHES AT RIPOGENUS, BELOW CHESUNCOOK LAKE, PENOBSCOT RIVER. PHKSSKV.] PENOBSCOT RIVER. 81 the current of the river being- swift, with frequenl falls over rockyledges. (See PL VI.) In the 30 miles between the Twin Lakes and the mouth of Matta-wamkeag River the Penobscot descends 288 feet. A portion of thisfall is utilized at Milinoket, where has been constructed the largestpulp and paper plant in the world. The total flow of the river a1 1 ha1point is diverted through a canal about a mile long, used in one headof 110 feet, and turned into Milinoket River as a tailrace. In the 60 miles from the mouth of the Mattawamkeag to Bangorthere is a fall of 177 feet. About half of this fall occurs in the 1-1miles from the head of the Cookis Rips, above Oldtown, to tide waterat Bangor, and in this distance several power developments have beenmade, dams being built across the main channel at five places, utiliz-ing
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