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3476 - 3500 of 5942 Items << < 135 136 137 138 139 140 141 142 143 144 > >>
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Although fish are a nutritious food source, they also are the main source of methylmercury exposure in U.S. populations. This research examined the risks from methylmercury and benefits from omega-3 fatty acids and selenium from fish consumption....
2014-12-05 (iso8601)
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LEGEND
Migration routes.
Present available spawning areas.
Areas not available or not suitable, due to man-made conditions. Areas never available or never suitable.
COLUMBIA RIVER BASIN
UTILIZATION BY SALMON AND STEELHEAD TROUT
SOURCE:...
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Document: "Snake-Colorado Project, A Plan to Transport Surplus Columbia River Basin Water to the Arid Southwest", October, 1963
1963-10-01
2006-09-26 |
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Document: "Snake-Colorado Project, A Plan to Transport Surplus Columbia River Basin Water to the Arid Southwest", October, 1963, page 16
1963-10-01
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Letter: From Stewart Udall, to Frank Snell, December 29, 1964 (thermofax)
1964-12-29
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Columbia River Basalt Group dikes cut the tonalite-granodiorite Wallowa
Batholith in northeastern Oregon, providing a natural setting in which to examine partial
melting. Many dikes have up to 5 m-wide zones of quenched partially melted wallrock...
2000-07-07 (iso8601)
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Use of basalt aquifers for aquifer storage and recovery (ASR) systems is increasing in the Pacific Northwest due to the large aerial extent of the Columbia River Basalt Group and the suitability of basalts as ASR reservoirs. However, the...
2010-04-14T18:07:42Z (iso8601)
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Battelle
2008-10-03
2008-10-03 1977-11-05 |
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The John Day Reservoir, a large reservoir between the John Day and the McNary Dams on the Columbia River, must be lowered several feet below design level during salmon migration season in order to preserve anadromous fish habitat. This research...
1996-11-26 (iso8601)
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An ASR metric and site rating index applied to over 120 municipal and
agricultural locations across Oregon, combined with comparison to case study data from
existing ASR sites, indicate that more than 50% of selected sites are hydrogeologically...
2008-01-02T16:27:51Z (iso8601)
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U.S.B.R. Federal Guard patrol boat "Wellpinit" on the reservoir.
1942-05-28
2024-11-05 |
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2834 EEPORT OP THE CHIEF OF ENGINEERS, U. S. ARMY.
Abstract of sealed proposals for furnishing and delivering in place material for construct-
ing a low-water dam at Swan Island, Willamette JUiver, Portland, Oregon, opened at 12
m....
2006-06-16
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APPENDIX TT----EEPORT OF CAPTAIN SYMONS. 2801
of a slough or channel at the head of Hayden Island, to which we have
added a project for dredging a channel 400 feet in width on the north
side of the Columbia Eiver, from the...
2006-06-16
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water at the landing seriously limit the work by delays and suspensions and render operations for five or six months of the year out of the question.
APPROPRIATIONS.
Act June 18, 1878 $5, 000
Act March 3, 1879 5, 000
Act August 2, 1882...
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The Columbia River at flood stage is diverted over spillway blocks at elevation 995. the conduit liners are in place for the outlet works at elevation 1036.
1939-06-01
2024-11-05 |
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U.S Engineeer Office, Portland, Oreg. Dec. 5, 1880.
G. L. Gillespie [signature]
Maj. of Engrs. Brt. Lt. Col. U.S.A.
To accompany Report to the Chief of Engr's U.S.A. of this date.
Soundings are expressed in fact and show the depths...
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The lecturer at the Government's free grandstand displays a model of the cross river cofferdams and the strategic block 40.
2024-11-05
2024-11-05 |
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The Sea Grant College Program Records
document the establishment and adminisration of marine extension, education,
and training programs; seafood and coastal environments research; and public
policy analysis pertaining to marine...
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C.B.I. workmen dismantling the cross-river aggregate conveyor suspension bridge, erected and used by the M.W.A.K. Company. Due to the uncertainty as to the foundations of the central tower, it was necessary that the bridge be removed before a...
1938-03-22
2024-11-05 |
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been going on in the shape and position of the island. These changes are, briefly, as follows :
The area above high tide in 1868 was 246.9 acres, while in 1878 it was 227 1/2, acres. During the past 10 years this area has moved in a direction...
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