APPENDIX T T. IMPROVEMENT OF RIVERS AND HARBORS IN THE FIRST PORTLAND, OREG., DISTRICT. REPORT OF MAJ. J. J. MORROW, CORPS OF ENGINEERS, OFFICER IN CHARGE, FOR THE FISCAL YEAR ENDING JUNE 30, 1911. 1. Coquille River, Oreg. IMPROVEMENTS. 2. Entrance to Coos Bay and Harbor, Oreg. 3. Coos River, Oreg. 4. Mouth of Siuslaw River, Oreg. 5. Tillamook Bay and Bar, Oreg. 6. Snake River, Oreg., Wash., and Idaho. 7. Columbia River and tributaries between Celilo Falls and mouth of Snake River, Oreg. and Wash. 8. Columbia River between the foot of The Dallas Rapids and the head of Celilo Falls, Oreg. and Wash. 9. Canal at the Cascades, Columbia River, Oreg. 10. Operating and care of canal and locks at the Cascades of the Columbia River, Oreg. 11. Columbia River between Vancouver, Wash., and mouth of Willamette River. UNITED STATES ENGINEER OFFICE, SIR: I have the honor to transmit herewith annual report for the fiscal year ending June 30, 1911, pertaining to improvement of rivers and harbors in the first Portland, Oreg., district. * Very respectfully, J. J. MORROW, Major, Corps of Engineers. The CHIEF OF ENGINEERS, UNITED STATES ARMY. T T I. IMPROVEMENT OF COQUILLE RIVER, OREG. Information concerning the status of work is given in the summary of this report. OPERATIONS DURING THE FISCAL YEAR 1911. No work was done in maintaining the jetties at the entrance completed in 1908. The jetties have remained in fairly good condition, although their outer ends were beaten down slightly by the heavy seas. The depth in the bar channel has been well maintained, and not less than 9 feet at low tide was reported. The greater part of the old Government plant used in building the jetties in former years was transferred during 1910 to the port of Siuslaw commission for use in building the south jetty at the entrance to the Siuslaw River. After the close of snagging operations on Coos River the Government snag scow used there was towed to Bandon January 3, 1911, and snagging operations commenced by hired labor at Coquille, working downstream, January 7. This snag scow has been in operation by hired labor to date, and its work has resulted in the removal of 1,505 snags, at a cost of $5,271.97, and in nearly clearing the river of snags as provided for in the project. Early last fall plans for a new combined snag and drill scow, for use on the Coquille River, were prepared. The scow was constructed under contract with Kruse & Banks at North Bend, and towed to the Coquille River. It was fitted up with a steam drill and commenced the work of rock removal on rock "E" April 24, 1911. Total cost of scow, including equipment, was $6,661. To the present date rocks E and D have been drilled, and rock E blasted, resulting in reduction of the rock from 2 feet above to 5 feet below mean lower low water, and work is in progress on the other rocks near Bandon. The drilling and blasting have cost to date $3,564.10. On June 8 the dredge Oregon and two scows loaded with pontons and pipe were towed from Coos Bay to the Coquille River by the tug Klyhiam. On June 16 the dredge started work on the Bandon shoal, and had removed 28,504 cubic yards of material therefrom by the end of the fiscal year, at a cost of $4,387.20. It is expected that the entire project will be completed by about next October or November, and the river left in good shape so that any vessels that can enter the mouth can safely pass up as far as Coquille, 25 miles above. Estimate of additional funds required. Amount that can be profitably expended in fiscal year ending June 30, 1913, for maintenance of improvement.... APPROPRIATIONS. Mar. 2, 1907. Total appropriated to Dec. 31, 1902 (see H. Doc. No. 421, 57th Cong., 2d sess.). Mar. 3, 1905. June 25, 1910.. 60,000 56,000 Total..... 411,000 1 Exclusive of the balance unexpended July 1, 1911. CONTRACTS IN FORCE. Name of lessor: Chris and Nels Rasmussen, Bandon, Oreg. Date of lease: May 10, 1909. Character: Hire and lease of one room. Price: $7.50 per month. Approved: Authorized by Chief of Engineers, April 21, 1908. Date of beginning: May 10, 1909. Date of expiration: May 9, 1911. Renewed: May 10, 1911. Date of expiration: May 9, 1913. 1 Arrivals and clearances over the bar, irrespective of number of vessels. Average haul on portion of river under improvement, 25 miles; total average haul, river and ocean, 450 miles. TT 2. IMPROVEMENT OF ENTRANCE TO COOS BAY AND HARBOR, OREG. Information concerning the approved project for improvement of Coos Bay and Harbor is given in the summary of this report. OPERATIONS FOR THE FISCAL YEAR 1911. No active operations were carried on in connection with the jetty at the entrance, completed in former years. The enrockment of the north jetty subsided slightly during the year under the action of the waves and the jetty tramway and receiving wharf have been completely destroyed by the teredo and decay, but the jetty is still effective in maintaining fairly good bar depths, averaging about 20 feet at low tide. The plant used in former years, which was badly worn by use and age, was loaded on a barge and taken to the Columbia River last summer, and the engines and such parts of it as were serviceable were repaired and put in use at The Dalles-Celilo Canal. During the present spring about 52 acres of the sands of the north spit were planted to Holland grass roots (Arunda Arenaria) which were obtained from the plantations of former years. The river and harbor act of June 25, 1910, provided $50,000 for continuing the approved project of dredging a channel from Marshfield to deep water in the lower bay, with a least depth of 18 feet. No active dredging operations had been carried on at Coos Bay under the project since September 3, 1909, on account of the reduction of available funds, and for the reason that the dredge Oregon was needed in the State of Washington. The dredge was taken from Coos Bay for work in the Columbia River and at Grays Harbor, after a channel with a least width of 160 feet and a least depth of about 17 feet at mean lower low water had been excavated from the C. A. Smith Lumber Co.'s wharf, just above Marshfield, to a point opposite plat "B," above the Porter mill at North Bend. The dredging work at Grays Harbor, Wash., came to an end in October, 1910. The dredge Oregon and a barge with 27 pontons and pipe line arrived at Coos Bay in tow of the tug Daring, two days from Grays Harbor, on October 28, 1910. As soon as possible after its arrival at Coos Bay the dredge was gotten ready and started work by hired labor on Pony Slough Shoal November 10. It worked 14 days at this place and excavated about 10,000 cubic yards of sand, but the rough water in this exposed portion of the bay at this season rendered it advisable to leave the Pony Slough Shoal and dredge farther up the bay during the winter. On November 24, 1910, work was commenced at the lower end of the cut made in 1909, opposite plat "B" above the Porter mill, and continued down the bay in the projected channel to moderately deep water past North Bend. The work on this portion of the channel was continuous until April 16, and during this period 332,437 cubic yards of sand, mud, and oyster shells were excavated, most of which was deposited behind bulkheads built by private parties on the west shore of the bay. On April 16 the dredge commenced on the cut through North Slough Shoal, which was completed May 5, 1911, after excavating 30,170 cubic yards of sand, which was pumped along the edge of the west shore. The dredge was then moved to Pony Slough Shoal and |