Download or read book Navigation Improvement Project, General Design Memorandum, Portsmouth Harbor & Piscataqua River, Maine & New Hampshire written by United States. Army. Corps of Engineers. New England Division and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Report summarizes the physical features and costs of improving Portsmouth Harbor and the Piscataqua River, specifically for widening and extending the Federal channel. -- From p. [1].