[1900-1908 Chief's annual report]; Annual report upon the improvement of Potomac River and its tributaries; of James River and of Harbor at Milford Haven, Virginia, and of certain rivers in Virginia on western shore of Chesapeake Bay; Protection of Jamestown Island, James River, Virginia; Annual report upon the improvement of Potomac River and its tributaries, of James River and of Harbor at Milford Haven, Virginia, and of certain rivers in Maryland and Virginia on the western and eastern shores of Chesapeake Bay; Protection of Jamestown Island, James River, Virginia; Annual report upon the improvement of Potomac River and its tributaries, of James River and of Harbor at Milford Haven, Virginia, and of certain rivers in Maryland and Virginia on the western shore of Chesapeake Bay; Protection of Jamestown Island, James River, Virginia

ANNUAL REPORT UPON THE IMPROVEMENT OF POTOMAC RIVER AND ITS TRIBUTARIES; OF JAMES ! RIVER AND OF HARBOR AT MILFORD HAVEN, VIRGINIA, AND OF CERTAIN RIVERS IN VIRGINIA ON WESTERN SHORE OF CHESAPEAKE BAY; PROTECTION OF JAMESTOWN ISLAND, JAMES RIVER, VIRGINIA, IN THE CHARGE OF CH-AS. J. A-LLEIST, LIEUT. COLONEL, CORPS OF ENGINEERS, U. S. A. ; BEING APPENDIX L OF THE ANNUAL REPORT OF THE CHIEF OF ENGINEERS FOR 1900. WASHINGTON: GOVERNMENT PRINTING OFFICE. 1900. [EXTRACT FROM THE ANNUAL REPORT OF THE CHIEF OF ENGINEERS TO THE SECRETARY OF WAR.] OFFICE OF THE CHIEF OF ENGINEERS, UNITED STATES ARMY, Washington, 'September' 28, 1900. * -X -X* -X- -X -X -X IMPROVEMENT OF POTOMAC RIVER AND ITS TRIBUTARIES; OF JAMES RIVER AND OF HARBOR AT MILFORD HAVEN, VIRGINIA, AND OF CERTAIN RIVERS IN VIRGINIA ON THE WESTERN SHORE OF CHES¬ APEAKE BAY; PROTECTION OF JAMESTOWN ISLAND, VIRGINIA. This district was in the charge of Lieut. Col. Chas. J. Allen, Corps of Engineers. 1. Potomac Piver at Washington, D. C.—The Potomac River is navigable for vessels, both steam and sail, from its mouth to George¬ town, D. C., a distance of 113 miles. At Washington it changes its char¬ acter from a distinctly fluvial to a tidal stream. The tide rises as far up as Little Falls, 3 miles above Georgetown, but the flood current is not perceptible above the latter. The mean range of tides at Washington i^ 3 feet. At Little Falls, the actual head of navigation, the width of the river at low tide is 150 feet. The width just above the Aqueduct Bridge, which crosses the river at Georgetown, is about 1,200 feet. Below this bridge, along the water front at Georgetown, the width of the river gradually decreases for a distance of one-half mile to the foot of Thirty-first street, where the width is 730 feet. This part of the river is known as Georgetown Harbor, and its navigation was formerly obstructed by several dangerous rocks, which were removed in 1876 and 1883-1885. The depth obtained over these rocks by the impr