Download or read book St Marys River Installation and Operation of the Ice Booms at the Little Rapids Cut Negative Declaration and EA written by and published by . This book was released on 1976 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book St Marys River installation and operation of the ice booms at the Little Rapids Cut negative declaration and EA written by and published by . This book was released on 1976 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book St Marys River Operation of the Sugar Island Bubbler flusher System Negative Declaration and EA written by and published by . This book was released on 1976 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effectiveness and Influences of the Navigation Ice Booms on the St Marys River written by Roscoe E. Perham and published by . This book was released on 1984 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Operation of the St Marys River Little Rapids Cut Ice Boom written by United States. Army. Corps of Engineers. Detroit District and published by . This book was released on 1990 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book St Marys River Ice Booms written by Roscoe E. Perham and published by . This book was released on 1976 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report on the St Marys River Ice Boom and Its Effects on Levels and Flows in the Soo Harbor Area Winter of 1978 79 written by and published by . This book was released on 1979 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Operation of the St Marys River Little Rapids Cut Ice Boom written by United States. Army. Corps of Engineers. Detroit District and published by . This book was released on 1987 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Performance of the St Marys River Ice Booms 1976 1977 written by Roscoe E. Perham and published by . This book was released on 1978 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The St Marys River Little Rapids Cut Ice Boom Winter of 1983 1984 written by CORPS OF ENGINEERS DETROIT MI DETROIT DISTRICT. and published by . This book was released on 1984 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: An ice boom at the head of LIttle Rapids Cut was first installed as part of the Great Lakes and St. Lawrence Seaway Navigation Season Extension Demonstration Program. to help stabilize the ice cover in Sault Harbor and thus moderate ice problems in Little Rapids Cut and act as an aid to winter navigation. Upon conclusion of the Demonstration Program, a decision was made to reinstall the ice boom each winter for an indefinite period. Authority for installation of the ice boom was given to the Sault Area Office as part of its regular operations. This report documents the operation of the Little Rapids Cut boom during the 1983 - 1984 winter season. The boom system stabilized the ice cover in Sault Harbor, reducing the extent of ice accumulation in Little Rapids Cut and reducing the amount of ice in the Sugar Island ferry crossing. Thus, the liklihood of emergency cutbacks in the outflow from Lake Superior that would cause power losses at the hydropower plants has lessened. Also, the boom has contributed to more reliable winter transportation between Sugar Island and the mainland. Keywords: Ice boom; Water levels; Flows and ice thickness; Soo Harbor; Little Rapids Cut. (JHD).
Download or read book The St Marys River Little Rapids Cut Ice Boom written by United States. Army. Corps of Engineers. Detroit District and published by . This book was released on 1983 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The St Marys River Little Rapids Cut Ice Boom and Its Effects on Levels and Flows in the Soo Harbor Area written by United States. Army. Corps of Engineers. Detroit District and published by . This book was released on 1981 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The St Marys River Little Rapids Cut Ice Boom written by United States. Army. Corps of Engineers. Detroit District and published by . This book was released on 1982 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report on the St Marys River Little Rapids Cut Ice Boom and Its Effects on Levels and Flows in the Soo Harbor Area written by United States. Army. Corps of Engineers. Detroit District and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effectiveness and Influences of the Navigation Ice Booms on the St Marys River written by Roscoe E. Perham and published by . This book was released on 1984 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ice problems developed in the Sault Ste. Marie, Michigan, portion of the St. Marys River because of winter navigation Passing ships and natural influences moved ice from Soo Harbor into Little Rapids Cut in sufficient quantities to jam, cause high water in the harbor, and prevent further ship passage. After physical model and engineering studies, two ice booms with a total span of 1375 ft (419 m) with a 250-ft (76-m) navigation opening between were installed at the head of Little Rapids Cut in 1975. A modest field study program on the booms was conducted for the ensuring four winters to determine ice and boom interaction and the effects of ship passages on the system. Forces on some anchors were recorded and supplemental data were taken by local personnel. Several reports have been written about the booms' early operations. This paper presents four-year summary of the main effects of the booms on ice and ship interaction and vice versa. Throughout the four winter seasons, the small quantities of ice lost over and between the booms were manageable. Ships usually passed through the boom without influencing the boom force levels, but at time they brought about large changes. One boom needed strengthening, and artificial islands were added for upstream ice stability. Coast Guard icebreakers were also a necessary part of winter navigation in this area.
Download or read book St Marys River operation of the Sugar Island bubbler flusher system negative declaration and EA written by and published by . This book was released on 1976 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Determining the Effectiveness of a Navigable Ice Boom written by Roscoe E. Perham and published by . This book was released on 1985 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: The performance of a navigable ice boom was studied by monitoring the progression of the leading edge of the unconsolidated ice cover over a reach of the St. Marys River directly downstream of the boom. Ice and hydraulic data were obtained for four winters from 1975-76 through 1978-79 for the St. Marys River at Sault Ste. Marie, Michigan. The ice cover progression rate was highest in early winter. The unconsolidated ice cover in the channel was estimated to have a thickness of at least 0.91 m and a porosity of 30%. During early winter the ice discharge per vessel passage averaged approximately 5500 cu m. for the four years. Model tests for this site had indicated that without an ice control structure of any type, an ice release of 63,000 cu m per ship passage could be expected; with an ice boom the release would be 12,300 cu m per ship passage. If a 100% effective boom releases no ice at all, then the measured rate indicates that the boom is 92% effective. On-site observations and time-lapse movies provided partial verification. Ice flowed down the ship track and through the navigation opening fairly often. Occasionally ice came over the boom in response to ship movements and natural causes. Keywords: Ice booms; Ice control; Winter navigation.
