was expended $25,346.99 in the removal of 650 snags and 139 trees, with 37 days spent in scraping crests of bars and 27 days in dam building. The channel of the Sacramento before improvement offered a depth of 33 feet as far as Jacinto, and 23 above that to Chico Landing; but these depths were not available on account of snags. The result of work has been to secure safe channels with these depths above the mouth of the Feather, and marked decrease in accidents to the navigation. The river, below the mouth of Feather, which has deteriorated since improvement was undertaken from the inflow of detritus from the mines, last season offered greater difficulty to navigation than ever before. The snag-boat is now in her sixth season and will need hereafter extensive annual repairs.. With the sums available, and asked for, it is proposed to continue work as before with the snag-boat. The work being an annual necessity, no estimate can be given for a final completion. Of the annual expenditures this fiscal year $2,000 was paid to the contractors for the new dredge. July 1, 1885, amount available.. July 1, 1886, amount expended during fiscal year, exclusive of liabilities outstanding July 1, 1885. July 1, 1886, outstanding liabilities July 1, 1886, amount available...... $220,511 35 $24,608 87 31, 118 59 189,392 76 Amount that can be profitably expended in fiscal year ending June 30, 1888 40, 000 00 Submitted in compliance with requirements of section 2 of river aud harbor acts of 1866 and 1867. (See Appendix P P 4.) NOTE. The river and harbor act of August 5, 1886, directs that the balance of unexpended moneys for this improvement shall not be used until the Secretary of War be satisfied that hydraulic mining, hurtful to navigation, has ceased on these rivers and their tributaries. 5. Colorado River, Nevada, California, and Arizona.-A project for improvement was adopted October, 1884, the object being to afford a channel of practicable width and 3 feet in depth from Camp Mojave to El Dorado Cañon during six months in each year, by hired labor. The river in its unimproved condition was navigable with some difficulty for 23 feet draught throughout the year from its mouth to Camp Mojave, but from thence to El Dorado were numerous rapids and some sunken rocks with less than 1 foot of water. The worst obstructions were at Hatteras Bar, Six Mile Rapid, and Mojave Crossing. The amount expended to June 30, 1885, was $15,741.59, and resulted in a permanent improvement to the desired limits, and Six Mile Rapid by the removal of sunken bowlders, and a partial improvement at Mojave Crossing by the closure of a side channel. During the year ending June 30, 1886, there has been expended $9,077.95 and the result has been an increase in the low-water depths at Mojave Crossing from 1 foot to 3 feet, and at Hatteras Bar from 1 foot to 2 feet. Explorer's Rock, above El Dorado Cañon, was removed from 1 foot above low water to 1 foot below, and is no longer an obstacle at stages when navigation in this part of the river is possible. Contracted channels were widened at Bull's Head Cañon and Bowlder Rapid, and a side channel closed at Pest House Rapid. The effect of work thus far, in the opinion of steamboatmen, has been to make navigation to El Dorado Cañon practicable for about five months in each year. The appropriation is exhausted and no work is proposed for the com ing fiscal year. In the lack of detailed surveys of the river no precise estimate of cost of completing original project can be made. July 1, 1885, amount available.. $9,258 41 July 1, 1886, amount expended during fiscal year, exclusive of liabilities outstanding July 1, 1885 9,077 95 July 1, 1886, amount available ... (See Appendix P P 5.) 180 46 IMPROVEMENT OF UPPER AND LOWER COLUMBIA AND WILLAMETTE RIVERS; OF THE SNAKE, COWLITZ, AND YAMHILL RIVERS, OREGON AND WASHINGTON; AND OF LOWER CLEARWATER RIVER, IDAHOCONSTRUCTION OF CASCADES CANAL, COLUMBIA RIVER. Officer in charge, Maj. W. A. Jones, Corps of Engineers, with Lieut. Willard Young, Corps of Engineers, under his immediate orders. Supervising Engineer, Lieut. Col. G. H. Mendell, Corps of Engineers. 1. Columbia and Willamette rivers below Portland, Oregon (in charge of Capt. C. F. Powell, Corps of Engineers, to March 31, 1886).-The project for this improvement was adopted in 1877, and modified subsequently; the object being to afford a ship-channel of 20 feet depth at low water, by contraction and shore-protection works at four bars from Portland to Columbia City, by temporary improvement at the bars during construction of the works, and at three shoal places below Columbia City, and by snagging operations. The natural depth of channel at the shoalest place was about 9 feet, and on six other bars 10 to 15 feet at low water. The amount expended on the project to June 30, 1886, is $373,755.06, and has resulted generally in maintaining a channel depth of successively 17, 18, and 19 feet, low water, from Astoria, near the mouth of the Columbia River, to Portland, 100 miles distant inland. Operations during the year consisted of sounding and surveying bars, ballasting dike at Saint Helen's; willow plantations above shore-protection works; repairs to tug Lincoln, and care and protection of property and plant. The amount asked for the next fiscal year is for completion of the project of contraction and shore-protection works, temporary improvement during the year, extension of the plan of permanent works below Columbia City, and for removal of a rock obstruction. Amount expended to June 30, 1886, is $373,755.06. July 1, 1885, amount available....... $506 28 Received during fiscal year ending June 30, 1886, from transfer of property to other appropriations.. 2,530 35 3,036 63 July 1, 1886, amount expended during fiscal year, exclusive of liabilities outstanding July 1, 1885............ 3,036 12 July 1, 1886, amount available..... Amount appropriated by act approved August 5, 1886.. 51 75,000 00 Amount available for fiscal year ending June 30, 1887...... 75,000 51 332,000 00 Amount (estimated) required for completion of existing project... harbor acts of 1866 and 1867. (See Appendix Q Q 1.) 2. Upper Willamette River, Oregon.-The project for this improvement was adopted in 1870, modified in 1878, and extended in later years. The object is to afford and maintain an easy light-draught navigation from Portland to Eugene City, and on 12 miles of tributaries, making in all a distance of 184 miles. The work consists of snagging operations, bar scraping, and for the reach between Willamette Falls and Corvallis, in the contraction of water-way by low cut-off or wing-dams and rock removal. The natural channel from Portland to Willamette Falls, 12 miles, was generally deep and wide. Above it is narrow, tortuous, and much obstructed. The mouth of the Yamhill, 28 miles from the falls, was the head of an inconvenient low-water navigation in a draught of 23 feet. Only 1 foot could be carried above. The present project was adopted in 1878. Total appropriation to August 5, 1886, $84,000. Amount expended, $73,984.52, of which about $22,000 has been applied to construction, and the remainder to maintenance. Operations for the year have been work with the snag-boat and construction of wing-dams. The amount asked for is to be applied to rock removal, river-construction works, and annual maintenance. July 1, 1885, amount available... $3,394 72 July 1, 1886, amount expended during fiscal year, exclusive of liabilities outstanding July 1, 1885.... 3,379 24 Amount (estimated) required for completion of existing project..... 29,000 00 29,000 00 (See Appendix Q Q 2.) 3. Columbia River at Cascades, Oregon. The plan for this improvement, adopted in 1877 and modified in 1880, is to give lockage around the main rapid and open river navigation through the minor rapid below, from low water up to a stage of about 20 feet, at the foot of the canal. The plan contemplates the construction of a guard-lock for use at the higher stages. The canal will be about 3,000 feet long. The low-water lock will have a lift of about 24 feet. The lock capacity will be 90 feet by 462 feet, with a least draught of 8 feet. Amount expended to June 30, 1886, is $951,450.25. During the year work has been carried on in the excavation for canal and lock-pits, grading grounds, quarrying stone from bowlders, completion of cement-shed, repairs of plant and quarters, repairing road for wagon-portage, construction of scow, water-guage observations, and care and protection of plant and property. The appropriation asked for is to be applied to construction of wingwalls, lock-walls, guard-gate, purchase of timber for gates, lock and canal-pit excavation, and grading. July 1, 1885, amount available... July 1, 1886, amount expended during fiscal year, exclusive of liabilities outstanding July 1, 1885... July 1, 1886, outstanding liabilities... July 1, 1886, amount available Amount appropriated by act approved August 5, 1886.... Amount available for fiscal year ending June 30, 1887 $21,823 67 $18,273 92 19,050 74 2,772 93 187,500 00 190,272 93 Amount (estimated) required for completion of existing project...... 1, 100, 000 00 Amount that can be profitably expended in fiscal year ending June 30, 1888.. Submitted in compliance with requirements of section 2 of river and harbor acts of 1866 and 1867. (See Appendix Q Q 3.) 400,000 00 4. Upper Columbia and Snake rivers, Oregon and Washington Territory. The plan of this improvement, adopted in 1877, consists in rock removal at a number of very swift rapids to give channel depths at low water of 5 feet in the Columbia and 4 feet in Snake River, a river length of 266 miles between Celilo on the Columbia and Lewiston on the Snake. The natural channel was narrow, tortuous, and dangerous, with many very difficult rapids. Amount expended to June 30, 1886, is $113,550.90, and has resulted in improvement at fifteen localities. All work has been done by contract, but has been very much impeded by bad weather and accidents. The rapids are very strong and work is difficult and dangerous. Rock removed during year, 58.45 cubic yards. Gravel and cobblestone removed during the year, 587.04 cubic yards. It is proposed to apply the appropriation asked for to the removal of rocks and cobble-stone bars to complete the project. July 1, 1885, amount available.. July 1, 1886, amount expended during fiscal year, exclusive of $8,398 79 liabilities outstanding July 1, 1885. July 1, 1886, outstanding liabilities.. $5,949 69 6, 027 19 July 1, 1887, amount available..... 2,371 60 Amount appropriated by act approved August 5, 1886.. 10,000 00 Amount available for fiscal year ending June 30, 1887..... 12,371 60 Amount (estimated) required for completion of existing project... 26,000 00 20, 000 00 (See Appendix Q Q 4.) 5. Cowlitz River, Washington Territory.-The project for this improvement, adopted in 1880, consists in wing-dam construction, bar-scraping, and snagging operations, to secure light-draught navigation up to Toledo, a little more than 30 miles above the mouth. The original estimate for this work was $3,000 for construction in the first year, and an annual expenditure thereafter of $2,000 for maintenance by snagging operations. Total appropriation to August 5, 1886, is $8,000. Amount expended to June 30, 1886, is $6,000. During the year no work was performed, the appropriation having been practically exhausted in previous year. July 1, 1885, amount available July 1, 1886, amount expended during fiscal year, exclusive of liabilities outstanding July 1, 1885.. $11 87 11 87 Amount appropriated by act approved August 5, 1886 ... 2,000 00 Amount (estimated) required for completion of existing project.......... Amount that can be profitably expended in fiscal year ending June 30, 1888, to include maintenance. 3,000 00 Submitted in compliance with requirements of section 2 of river and harbor acts of 1866 and 1867. 5,000 00 (See Appendix Q Q 5.) 6. Lower Clearwater River, Idaho.-The present project, adopted in 1878, is to make a channel through rock-reefs and cobble-stone bars from Lewiston, at the mouth of the river, to North Fork, a distance of 40 miles, to secure a low-water channel depth of 4 feet. The amount expended to June 30, 1884, is $15,000, and has resulted in improvement, more or less complete, over the lower reach of 30 miles. Amount (estimated) required for completion of existing project........ $19,424 00 Submitted in compliance with requirements of section 2 of river and harbor acts of 1866 and 1867. (See Appendix Q Q 6.) 7. Survey of Columbia River above the mouth of Snake River, Washington Territory.-An allotment of $6,000 was made from the appropriation of July 5, 1884, for this work, and a project was duly approved for the applying this sum to a survey of Priest Rapids. The survey of the reach embraced by the Priest Rapids, a distance of 10.22 miles, and a rapid survey also made of Cabinet Rapids, 45 miles above, was made and completed within that sum. A project is submitted by the officer in charge for opening the river to navigation by means of open-river improvement and the removal of submerged rock by blasting, with an estimate of the cost of the same, $153,240. (See Appendix Q Q 7.) IMPROVEMENT OF THE MOUTH OF THE COLUMBIA RIVER, OREGON AND WASHINGTON TERRITORY; OF THE ENTRANCES TO COOS AND YAQUINA BAYS; OF MOUTH OF COQUILLE RIVER AND OF UMPQUA RIVER, OREGON; AND OF CERTAIN RIVERS EMPTYING INTO PUGET SOUND AND GRAY'S HARBOR, WASHINGTON TERRITORY—WATER GAUGES ON COLUMBIA RIVER. Officer in charge, Capt. Charles F. Powell, Corps of Engineers, with Lieut. Edward Burr, Corps of Engineers, under his immediate orders until October 20, 1885. Supervising Engineer, Lieut. Col. G. H. Mendell, Corps of Engineers. 1. Mouth of the Columbia River, Oregon and Washington Territory.The project of this improvement, adopted in 1884, is to afford a channel 30 feet deep at mean low tide by a low-tide jetty, about 4 miles long and of a partly tentative character, from near Fort Stevens, on the south cape, to a point about 3 miles south of Cape Disappointment. The natural channel is generally divided; the bar channels are changeable in location and depth. Of late years the main channel has carried about 19 feet at low water, and for an insufficient width; 26 feet are required on the bar in a wide, direct, and stable channel, and 30 |