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34 THE Marine REVIEW ies ; at a) Fi oe ee er ee er OHIO RIVER LocK 100 By 600 Fr. USEFUL DIMENSIONS (LOCK OHIO RIVER COAL FLEET LEAVING THE HARBOR. AT PITTSBURG, PA. NO. 6). ing No. 6, have been made available as, one connected system. for 'the movement of commerce. Accordingly neatly 50 miles of navigable water- way have been added in the Pitts- burg district, and the facilities for greater commercial activity and con- venience vastly increased in the Mon- ongahela river through the completion of new dam No. 3. Practically every manufactory, mine, etc., located in the river valleys of the Pittsburg region has been brought into more or less direct touch with river transportation. That all are unable to avail. them- selves of the advantages of river ship- ping at once must, at least to a con- siderable extent, be attributed to the fact that the improved navigation is still limited, affording relief during the low water season only over such part of the rivers as are rendered permanently navigable by the im- provements already accomplished, which now includes only a very short reach'on the Ohio river, namely to No. 6 dam. To be sure the purely local business at Pittsburg is no in- considerable item. But after all it is the long distance or through trade that offers the greatest advantages to the shipper, and this is impossible of attainment save through the addition of a considerable number of dams below No. 6. In the general subject of navigation as it affects the region round about Pittsburg, the radical improvement' of the Ohio certainly presents the princi- pal and at the same time the most interesting problem. With its navi- gation permanently effected the en- tire region bordering on its banks opens up to our commercial use and immediately attains its maximum yal- ue. At once we are brought into direct communication with nearly a thousand .miles of tributary slack- water navigation already pro- vided and maintained by © the federal government. Since this is continually being extended on a good- ly number of important side streams it is not difficult to see that the bene- fits will materially increase with the progress of improvements down the Ohio. Necessarily with the enlarge- ment of our water facilities communi- cation. will be extended to more largely diversified interests and indus- LL Ah Fae Aw NEW LOCK NO. 2, MONONGAHELA RIVER, LOCK WALLS FINISHED. MODEL BARGES LOADED WITH STEEL RAILS MOORED IN PITTSBURG HARBOR AWAITING A NAVIGABLE STAGE OF WATER FOR SHIPMENT TO LOWER MISSISSIPPI RIVER PORTS.