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Oregon Digital
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materially to the success of the work. Ordinarily during the months of October and November occur rises of several feet in the Willamette, sufficient to necessitate suspension of the work and probably, in its unfinished state, to cause serious...
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change materially during the present flood in the Columbia, no accurate estimate can be made of its cost at this time.
By the end of March the bay behind the dike had shoaled materially, the low-water line making out so as to cover the single...
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tween the cribs, where the current is strongest, running at the rate of 3 miles per hour, failed to discover any cutting or other indication of injury to the work.
Al- the then prevailing stage, 20 feet above low-water, the dividing line between...
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CONDENSED HISTORY OF THE IMPROVEMENT OF THE LOWER WILLAMETTE AND COLUMBIA RIVERS, FROM PORTLAND, OREGON, TO THE SEA.
The Columbia is first mentioned by Jonathan Carver, in 1768, as a stream rising on the western slope of the lands dividing...
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the material excavated was hard blue clay. The city bid for removing the bar, but the price bid exceeding the appropriation, the city offered the use of the dredge free of cost, provided the government would keep it in repair. The engineer in...
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Operations were confined to dredging on Swan Island Bar, where 1,400 cubic yards were removed. The channel cut was 1.7 feet deep at low-water, and 85 feet long, 2,000 linear feet yet remaining to be cut through, with a width of from 200 to 250...
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Under contract with J. L. Hallett, dated April 21, 1874, a dam was begun across Percie's Slough, an arm of the Columbia, through which (during the annual flood of this stream, the Willamette at such times being low) a large volume of water,...
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feet long by 70 feet wide and 17 feet deep was dredged, removing 5,650 cubic yards of sand.
Post-Office Bar, in September, 1875, was found to have filled more than 3 feet daring the year. Dredging was begun in October, and 600 cubic yards of...
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110 feet wide, and 19 feet deep at low-water was opened, and 14,130 yards of sand removed.
At the last-named point shoaling had reduced the depth to 15 feet. Beacons were erected to mark the new channel, with targets to mark the range by day and...
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excavated. At Saint Helen's Bar 1,080 yards were removed, making a cut 150 feet wide with 18 feet depth of water. At Swan Island 3,855 cubic yards were dredged, and a number of large snags imbedded in the bottom removed. Work here was stopped...
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Improvement of the Lower Willamette and Columbia River, 1879-80.
Sheet A.
Sauvie's Island
General Map, Showing Location of Works
Columbia Slough
POST OFFICE BAR THREE TREE I.
MOUTH OF THE WILLAMETTE BAR
Coon Island Slough
Nigger...
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sediment by the Columbia flood, which varies in depth from 2 to 4 feet, will not extend above the plane of 20 feet below low-water level; and that the fresh deposits being soft and easily eroded will, instead of remaining to build up the bars in...
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Names.
River and ocean steamers running June, 1880-Continued.
Hull measurement. Built. Route. In At Length Width Height Tonnage (measured). Toledo 1878 do 109 22 1/2. 4 1/2 202 Portland and Cowlitz River. Varuna... |
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DATA RELATIVE TO THE CLASS OF VESSELS WHICH CROSS THE BAR AT THE MOUTH OF THE COLUMBIA RIVER, OREGON.
All foreign trading vessels are generally of iron ; American and coasting vessels generally of wood. The usual draught of the largest vessels...
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DATA RELATIVE TO THE CLASS OF VESSELS WHICH CROSS THE BAR AT THE MOUTH OF THE COLUMBIA RIVER, OREGON.
All foreign trading vessels are generally of iron ; American and coasting vessels generally of wood. The usual draught of the largest vessels...
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over Dove Rock, and boats descending found it almost impossible to pass on either side without being thrown upon it. As the reduction of this rock had been asked, on the same grounds, by the principal pilots for several years, I felt that their...
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Grande Ronde Narrow. Gauge Railroad, which is being extended up the valley on the west side, and which may eventually pass the Cascade Range at one of the southerly practicable passes. The Oregonian Railway Company (limited) has two boats which...
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Abstract of contract for the improvement of the Upper Willamette River, in force during the
fiscal year ending June 30, 1880.
Name and residence of contractor.
Date of contract.
Subject of contract,
Price per cubic yard.
Remarks.
No....
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In February, in compliance with the request of parties interested, the master and a portion of the crew of the snag-boat were sent to cut away a number of large trees which had been prostrated by the gale of January 9, mention of which has been...
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The base of levels was assumed, and has been since found to be about 23 feet too high. The actual height of low-water mark at Portland does not probably exceed 6 feet.
WORK FOR THE PRESENT SUMMER.
Besides the ordinary service of the...
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U. B. Scott & Co., and now owned by the Oregonian Railway Company, limited ; the A. A. McCully, built by Capt. J. D. Miller, and now belonging to Z. J. Hatch; and the City of Quincy, built and owned by Buchanan Brothers.
The most important aid...
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1873, reducing the excessive width of the river, and resulting in good navigable depth, which is maintained to the present time.
UNION BAR.
Here there .are two channels, that on the right called Coffee Slough; the left, formerly the...
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HUMPHREYS' RAPID.
Here there are two channels. That on the east is practically closed at its head by a gravel-bar; the other is obstructed by a dangerous ledge of rock near its lower end. In the year 1873 a dam, 300 feet long, was built from the...
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bar on each side, converging toward the middle of the river, sluicing out a good channel.
BOWERS' BAR.
The trouble here is due to cement gravel extending across the river, 3 feet below low-water. The dam built in 1872 failed to cut out the...
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