COMMERCIAL STATISTICS. Canal at Cascades, Oregon, summary of business, etc., during fiscal year ending June 30, Statement of traffic passing through canal at Cascades, Oregon, during fiscal year ending June 30, 1901. Statement of traffic passing through canal at Cascades, Oregon, etc.—Continued. List of vessels passing through canal at the Cascades, Columbia River, Oregon, during fiscal year ending June 30, 1901. NOTE-Reading of adopted low water at head of canal is 96; reading of adopted low water at foot of canal is 72. V V 14. IMPROVEMENT OF COLUMBIA RIVER BETWEEN VANCOUVER, WASHINGTON, AND MOUTH OF WILLAMETTE RIVER. The project for increasing the depth from 9 feet to about 20 feet over a sand bar in the Columbia River, about 24 miles below Vancouver, Wash., by means of scour, to be produced by a dike extending from the Oregon shore to the head of Hayden Island, and the results of operations in former years are mentioned in the summary of this report. The operations during fiscal year ending June 30, 1901, consisted of maintaining the main dike, the two cross dikes connecting the main dike with the head of Hayden Island, and the brush fascine and rubblestone revetment placed in former years on the head of the island to prevent erosion. This work of maintenance was authorized by the Chief of Engineers, October 22, 1900. All the materials for this work of maintenance were furnished in place in the dikes and on the head of the island by the Hale & Kern Contract Company, of Portland, Oreg., under circular advertisement inviting proposals, dated October 12, 1900. This company commenced operations November 14, 1900, and completed them December 11, 1900, placing the followingnamed quantities of materials in the main and cross dikes and on the head of the island: The placing of the above-named materials was necessary to compensate for settlement of the brush and stone filling in the dikes and settlement of the revetment work on the head of the island, caused by the high water of the summer of 1900. On June 18, 1901, the sum of $8,000 was allotted from the appropriation for emergencies in river and harbor works, act of June 6, 1900, with which to place additional brush and rubblestone in the dikes and on the head of the island, to compensate for settlement caused by the high water of the summer of 1901, and it is proposed to place these additional materials in the work during the next low-water period, in the fall months of 1901. At this time it is estimated that the sum of $12,000, in addition to the balance available July 1, 1901, will be required during fiscal year ending June 30, 1903, to maintain the dikes and revetment work, this work of maintenance to consist of placing additional brush and rubblestone in the dikes and on the head of the island to offset settlement which it is anticipated will take place during the high water of the summers of 1902 and 1903. Accordingly, the sum of $12,000 is named in the appended money statement for maintenance of improvement during fiscal year ending June 30, 1903. It is considered important that funds for maintaining the dikes and the revetment work be available to fill up breaks and low places in the dikes promptly upon the subsidence of each annual flood, otherwise the work may be seriously damaged by succeeding all-summer floods. At this time this improvement is not considered an unworthy one, provided operations are limited to maintaining the dikes and revetment work already constructed. Amount that can be profitably expended in fiscal year ending June 30, 1903, for maintenance of improvement, in addition to the balance unexpended July 1, 1901 12,000.00 Submitted in compliance with requirements of sundry civil act of June 4, 1897, and of section 7 of the river and harbor act of 1899. V V 15. IMPROVEMENT OF CLEARWATER RIVER, IDAHO. As stated in the summary of this report, the unexpended funds are held in the Treasury to await future developments regarding the necessity for further improving the stream. The expenditures during fiscal year ending June 30, 1901, were limited to properly caring for the Government plant stored at Lewiston, Idaho. December 30, 1897, reimbursement for property transferred... 50,000.00 2.00 .50 Total 50,002. 50 COMMERCIAL STATISTICS. No commerce was carried on the stream during the calendar year 1900. V V 16. EXAMINATION AND SURVEY OF COLUMBIA RIVER, OREGON AND WASHINGTON. [Printed in House Doc. No. 228, Fifty-sixth Congress, second session.] OFFICE OF THE CHIEF OF ENGINEERS, UNITED STATES ARMY, Washington, December 18, 1900. SIR: I have the honor to submit herewith copies of reports, dated June 22, 1900, and November 30, 1900, by Capt. William W. Harts, Corps of Engineers, upon preliminary examination and survey, respec |