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4276 - 4300 of 4310 Items << < 167 168 169 170 171 172 173 > >>
4276 - 4300 of 4310 Items << < 167 168 169 170 171 172 173 > >>
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RESULTS OF THE WORK ON RIVER IMPROVEMENT.
Before any work on the river was done the worst places were Big Eddy Rapid at low stages and the Middle Block House Rapid at higher stages of water. It is believed that no steamer had been able to ascend...
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"Serial no. 108-104."
2024-05-14
2005-04-25 2005-04-15 |
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a sufficient depth of channel. Such a section is found between Chinook Point and Point Adams.
If the water-way between Cape Disappointment and Point Adams be narrowed to something less than that between Chinook Point and Point Adams, and the...
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"Serial no. 107-39."
2024-05-14
2005-03-17 2004-12-21 |
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Additions to the machine have been made since, but it is of a kind not adapted for Swan Island Bar, which is the only one now that remains where dredging is needed in the ship-channel of the Willamette River.
IMPROVEMENTS FOR POST-OFFICE BAR....
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A kernel estimator (KQ) of the quantile function is presented here. Boundary kernels are used for extrapolation of tail quantiles. The bandwidth of the estimator is chosen using an automatic, "plus-in" method....
1993-01-01
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If the locks should be built as combined locks with the upper gate of the upper lock near station 14, a bed-rock foundation would be secured for the entire construction, and a wide and easy entrance to the canal could be made at less cost than by...
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002.
IMPROVEMENT OF UPPER WILLAMETTE AND YAMHILL RIVERS, OREGON.
The amount available. for the continuance of this improvement at the opening of the fiscal year was $18,373.16, a part of which was under contract for rock removal at Rock...
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March. These storms have likewise, by their long continuance, at times raised the water in the outer harbor to such unusual heights that at high-tides, when a strong southerly wind was prevailing, the waves have swept up along the beach in front...
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2024-05-14
2024-05-14 |
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1. We tested how strongly aquatic macroinvertebrate taxa richness and composition were associated with natural variation in both flow regime and stream temperatures across streams of the western United States. 2. We used long-term flow records...
2011-02-22
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Successfully managing wetlands requires monitoring changes in plant community composition. We used remote sensing techniques to document the replacement of desirable native wetland vegetation with invasive species in response to catastrophic flood...
2014-02-01
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Induction heating coils behind the pier plates will prevent water from freezing and interfering with the operation of the drum gates.
1940-08-26
2024-05-14 |
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changed, crossing the bars at points where formerly there was from 6 to 12 inches of water only. The total work under contract consisted, therefore, in constructing 4,732 feet of dams, and excavating 71 1/4 cubic yards of rock.
THE UNITED STATES...
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come other difficulties, or remove other obstructions to navigation, at this locality, as well as at several other points. They cannot be foretold, but may be always anticipated in rivers subject to the very great changes observable in the regimen...
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On the left is shown the heavy mat of reinforcing steel embedded in the concrete to strengthen the overhanging lip to which the drum gate hinge anchors were fastened." The pipe shown in the center of the picture is part of the 60 inch drain for...
2024-05-14
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Analyses of changes in the flood frequency relationships over the last century will be presented for key river reaches in Idaho. In addition, projections of the impacts of increasing temperatures on the ability of Idaho's water resources to meet...
2007-07-24
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Here are two of the huge hydraulic lift cylinders for the ring-follower outlet gates located at elevation 950 in the dam. These gates form the upstream pair of the tandem gates, while paradox gates set on the opposite side of the gallery form the...
2024-05-14
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By June of 1942 the rising waters of the reservoir had backed the Kettle River up to a sufficient depth to permit removal of the Kettle River railroad bridge by barges and tugs. Here the power tug Paul Bunyan is maneuvering a barge under the last...
1942-06-01
2024-05-14 |
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WI-1, 7 SI-30
F-2, 9, 14 PI-49
Tentative Disposition
Source
C
E
PI-53
Problem or Area of Concern
6. Urbanization and agricultural practices influence run-off characteristics locally throughout the system. Also, runoff and...
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This aerial view of the dam site was taken on April 21, 1940. This scene may give a clearer understanding of how the Grand Coulee canyon was carved in the great lava bed when the ice sheet blocked the course of the Columbia River a few miles...
1940-04-21
2024-05-14 |
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A publication by the Trinity River Association, outlining the Trinity River master plan which was authorized by the 89th Congress under the Rivers and Harbors Act, Public Law 89-298, in 1965. The plan included navigation, flood control, water...
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Source
F-7 W-6
Tentative Disposition
A
Problem or Area of Concern
8. A number of FPC project licenses are due to expire in the next ten years, including major storage projects such as Flathead Lake and Chelan. The system impact of...
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