Message from the President of the United States, Transmitting a Report of the Examination Which Has Been Made by the Board of Engineers, with a View to Internal Improvement, February 14, 1825 - Read, Ordered That It Lie Upon the Table (Paperback)

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1825 edition. Excerpt: ... 30 degrees. Some rapids are found above the gap, but on its whole length the water is deep and the current slow. The gap in Chesnut ridy is about 2 miles long, and is very narrow in some places; it offers two or three rapids, of which the most considerable is Richards' falls; its banks do not slope beyond them 30 or 35 degrees. The floods of the Connemaugh at Laurel Hill gap, rise to 7 or 8 feet.' Stony creek and the Little Connemaugh join at J ohnstown, an may be considered as the upper forks of the Connemaugh; the canal should proceed up the valley of the Little Connemaugb, to the point where it receives Bear Rock run. Its valley in all that space offering no serious obstacle to it. From Pittsburg to this point, the bottom of all these valleys is stony, and offers a firm and easy ground for the works which may be run through them. Their banks are formed of sandstone, stratified, or in heavy blocks. Coal is abundant; and salt wells have been bored with success through the whole valley of the Connemaugh. These salt works are now in operation, and their number is multiplying very fast at the present moment. This section from Pittsburgito the forks of the Little Connemaugh. and Bear rock Run, may be considered as the western section of the icontemplated canal. It will be supplied with vater by the rivers 'whose valleys it ascends and their tributaries. The results of the measurements which were taken in this view in the middle of Septem ber. 1824. are as follows: The Little Connemaugh below Bear Rock Run, two miles below Selby's mill, yielded, --14.43 ft. per sec. The Little Connemaugh at Selby's mill, -7.09 Do. at the mouth of South fork, --' 47.21 Do.. above Johnstown, ---110.73 Stoney creek above J...