. American engineer and railroad journal . ruction. The dam, head-gates and Section i retaining walls,down to the location of the State Power House, were, how-ever, finally finished some months since, and are of an The work remaining now to be done, for the completionof Section i of the canal, is the construction of the walls,gates, etc., connecting the State Power House, both atthe inlet and outlet, with the canal ; also of a railroadbridge across the canal to give the State access to theprison yard and quarries. This work, it is expected, canbe completed in three or four months. When so comp
. American engineer and railroad journal . ruction. The dam, head-gates and Section i retaining walls,down to the location of the State Power House, were, how-ever, finally finished some months since, and are of an The work remaining now to be done, for the completionof Section i of the canal, is the construction of the walls,gates, etc., connecting the State Power House, both atthe inlet and outlet, with the canal ; also of a railroadbridge across the canal to give the State access to theprison yard and quarries. This work, it is expected, canbe completed in three or four months. When so completed the entire force will be transferredto Section 2 of the canal, and as this portion of the workis entirely excavation and dry retaining wall of rubble, ithas none of the difficult features which have made SectionI so long in construction. It is therefore considered rea-sonable to calculate that the balance of the canal may becompleted, to the Folsom terminus of the canal, in aboutone year from the time work is commenced on Section THE FOLSOM DAM, AMERICAN RIVER, CALIFORNIA. extent and stability scarcely equaled by any similar workin the world. For a more full understanding of theseworks the following details are instructive : The height of the dam is 89 ft. ; width on top, 24 ft. ;width on bottom, 87 ft. ; length, 650 ft. ; masonry con-tents, 48,590 cubic yards. The material is granite blocksof the most solid character and of the largest dimensions,laid in the best of English Portland cement, of which over20,000 barrels were consumed in the dam and head-works. The head-gates to the Eastside Canal are three in num-ber, each being 16 ft. wide. The head-gates to the West-side Canal are also three in number, each 15 ft. Eastside Canal is 50 ft. wide on top, 35 ft. wide onthe bottom and 8 ft. deep. The Westside Canal is 40 on top, 30 ft. wide on the bottom, and 6 ft. deep. The work on the State Power House, situated on theState Prison grouiids, at the end
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