The work accomplished on all headings in the eleven months ending June 30, 1906, amounted to 11,992 feet or nearly 2 miles of tunnel.

Under normal conditions the work should be completed sometime during the year 1908.

SOUTH CANAL.

The south canal (Pls. XXVI and XXVII) is about 12 miles in length and extends from the west portal of the Gunnison tunnel to a point on Uncompahgre River about 9 miles southeast of Montrose. The capacity varies from 1,300 to 1,175 second-feet. The work includes 34,980 feet of earth canal, 21,997 feet of concrete-lined canal, 2,277 feet of tunnel, 14 ten-foot drops, 1 forty-six foot drop (inclined plane), 1 twenty-eight foot drop (inclined plane), 12 pipe culverts, 6 masonry culverts, 3 highway bridges, and 10 diversion pipes, with head-gates, etc. The above enumeration does not include the portal cut at the west end of the Gunnison tunnel, which is 1,900 feet long, and will be lined with concrete.

The canal has been divided into 22 divisions. Nine of these, on which excavation only is necessary and on which lining or structures are not required, were completed between November, 1904, and September, 1905.a

On August 28, 1905, bids were received on divisions 10-21, inclusive. The contract for the entire 12 divisions was awarded to Orman & Crook, of Pueblo, Colo. These divisions include all the tunnel work, most of the masonry, and a large amount of excavation. The total estimated price of these 12 divisions is $513,675. On July 1, 1906, the contract was about 34 per cent completed.

On January 3, 1906, a contract was awarded to Western States Portland Cement Company, Independence, Kans., for 2,000 barrels of Portland cement, at $1.45 per barrel f. o. b. Independence. On February 6, 1906, bids were opened for supplying 30,000 barrels of Portland cement, and the contract was awarded to the McPhee & McGinnity Company, at $1.43 per barrel f.o. b. Iola, Kans.

a See Third Annual Report, pages 206 and 207, and Fourth Annual Report, page 110.

A.

B CONCRETE-LINED SECTION ON SOUTH CANAL, UNCOMPAHGRE VALLEY PROJECT, COLORADO.