Download or read book Ice Atlas for the Ohio Allegheny and Monongahela Rivers 1984 85 written by L. W. Gatto and published by . This book was released on 1986 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ice conditions on inland rivers can change rapidly and adversely affect navigation. The ice maps in this atlas were prepared to document the 1984-85 ice conditions on those reaches of the Ohio, Allegheny and Monongahela Rivers that are included in study areas for the River Ice Management (RIM) Program, namely river mile 0 to 437 on the Ohio River, mile 0 to 7 on the Allegheny, and mile 0 to 66 on the Monogahela. The maps were prepared from interpretation of vertical aerial video imagery taken from a low-flying aircraft. The interpreted ice conditions were classified into five units and transferred to base maps by reference to navigation charts and topographic maps. Fragmented Ice Cover and Ice Floes or Frazil Slush and Pans were the most common ice units in the lower pools of the Monongahela River and lower Allegheny. Solid Ice Cover and Fragmented Ice Cover were the most common units in the upper pools of the Monongahela. Fragmented Ice Cover and Open Water were the most extensive units in the Emsworth to New Cumberland pools of the Ohio; Open Water and Ice Floes or Frazil Slush and Pans were the predominant units in the downstream pools. There were frequent cancellations of flights during the 1984-85 winter because of low cloud ceilings. To get more frequent video coverage of ice during the 1985-86 winter, a wider-angle lens on the video camera will be used. This will allow flights at a lower altitude, permitting video coverage even when the ceiling is low.

Download or read book Ice Atlas 1984 1985 written by Lawrence W. Gatto and published by . This book was released on 1986 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ice Observations on the Allegheny and Monongahela Rivers written by and published by . This book was released on 1988 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Special Report written by and published by . This book was released on 1988 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book River Ice Jams written by S. Beltaos and published by Water Resources Publication. This book was released on 1995 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ice Conditions Along the Ohio River as Observed on Landsat Images 1972 1985 written by Lawrence W. Gatto and published by . This book was released on 1988 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lansat images were used to map ice distributions along the Ohio River. Ice conditions were inferred based on image grey tones interpreted using conventional photointerpretation techniques. Portions of the river that appeared black were considered ice-free. Grey tones were interpreted as ice that varied from patches of thin, snow-free solid or fragmented ice, sometimes with open areas, to floes, pans and slush. A white tone represented thick ice or snow-covered ice with few interspersed open areas. Ice that produced grey tones on the images occurred most frequently. Ice typically forms in late December or early January on the Ohio River and is gone by mid to late February. Ice was observed on the upstream section of the river from Pittsburgh to Greenup Dam during 7 of the 13 winters from 1972 to 1985, on the middle section from Greenup Dam to Cannelton Dam during 3 winters, and on the downstream section from Cannelton Dam to the Mississippi River during 4 winters. The most severe and long-lasting ice conditions occurred during the 1976-77 winter when ice covered 65% of the upstream section, 56% of the middle section, and 78% of the downstream section. Keywords: Aerial photography, Remote sensing; River ice, Winter navigation.

Download or read book Technical Reports Awareness Circular TRAC written by and published by . This book was released on 1987-03 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ice Conditions Along the Illinois Waterway as Observed on Landsat Images 1972 1985 written by Lawrence W. Gatto and published by . This book was released on 1989 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index written by and published by . This book was released on 1988 with total page 1060 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliographic Guide to Maps and Atlases written by and published by . This book was released on 1990 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Flow Regulation for Controlled River ice Formation written by Subhash Chandra Jain and published by . This book was released on 1993 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Army Corps of Engineers Fifth Remote Sensing Symposium October 28 30 1985 Ann Arbor Michigan USA written by and published by . This book was released on 1986 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1989 with total page 1104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index Keyword A L written by and published by . This book was released on 1988 with total page 1600 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Historical Ice Observations on the Allegheny and Monongahela Rivers written by Lawrence W. Gatto and published by . This book was released on 1988 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Winter Environment of the Ohio River Valley written by Steven F. Daly and published by . This book was released on 1990 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Regional Cooperation for Water Quality Improvement in Southwestern Pennsylvania written by National Research Council and published by National Academies Press. This book was released on 2005-04-04 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: The city of Pittsburgh and surrounding area of southwestern Pennsylvania face complex water quality problems, due in large part to aging wastewater infrastructures that cannot handle sewer overflows and stormwater runoff, especially during wet weather. Other problems such as acid mine drainage are a legacy of the region's past coal mining, heavy industry, and manufacturing economy. Currently, water planning and management in southwestern Pennsylvania is highly fragmented; federal and state governments, 11 counties, hundreds of municipalities, and other entities all play roles, but with little coordination or cooperation. The report finds that a comprehensive, watershed-based approach is needed to effectively meet water quality standards throughout the region in the most cost-effective manner. The report outlines both technical and institutional alternatives to consider in the development and implementation of such an approach.