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DATE & BONNEVILLE
FLOW (cfs)
DEPTH (FEET)
PBI TIME TEMP. 0C. (mg/ 1)
5/19/64
292,200
45 1528 105
20 1545 94
20 1617 7
STATION
V-3.7 (Willamette River near Terminal #4:
M-1 (Multnomah Channel above Sauvies Is. Bridge.)
105.8...
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EXPLANATION OF RIVER EVALUATION PROCEDURES
GENERAL INFORMATION
In order to evaluate the fishermen's complaints obtained on the Lower Columbia River to date, all data, including the fisherman reports, river discharge, and temperature were...
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report, the following estimate was made: A graph was constructed of time of passage versus river mileage from Lady Island outfall for various river discharges, using the flow equation Q = VA; where Q = discharge, V = average river velocity, and A...
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RIVER TEMPERATURE
Since the fishermen do not report river temperatures at their drifts, the exact daily temperatures are not available, but the daily Columbia River temperatures at Bonneville Dam are tabulated. The recorded temperatures at...
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an idea of the over-all tidal fluctuation occurring at maximum, minimum, and average river discharges was obtained. Also, the 1959 tide information would be similar to all yearly tide effects. A graph of tidal velocity versus tide amplitude was...
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of the standard velocity distribution in a river such as the Columbia is introduced:
Standard Velocity Distribution in a Vertical in Open Flow (17)
It is noted the average velocity occurs at approximately 0.6d below the water surface. All...
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layers. Therefore, it is concluded that the tidal fluctuation will have its greatest effect on the slime problem during periods of low river flow. As was mentioned earlier, the critical flow would be approximately 220,000 cfs at the lower drifts....
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TIME OF PASSAGE IN HOURS
Skamokawa Wauna-Puget Is.
Beaver
Longview
Kalama
St. Helens
Mouth of Will. Vancouver
Lady Is. Outfall
NOTE:
Computations based on
Ave. Velocity = Flow
Cross Sec. Area
R I V E R M I L E S (F r o m M...
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COLUMBIA RIVER COMMERCIAL FISHING SEASONS
1 9 6 3
February 15 to March 1
April 30 to Noon May 4
6 PM May 5 to Noon May 11
6 PM May 12 to Noon May 18
6 PM May 19 to Noon May 25
6 PM May 26 to May 27
6 PM June 16 to Noon June 22 6...
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BIBLIOGRAPHY
1. Transcript of Conference in the Matter of Pollution of Interstate Waters, Lower Columbia River, Bonneville Dam to Cathlamet, Washington, September 10-11, 1958, Portland, Oregon.
2. Transcript of Conference in the Matter of...
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11. An Evaluation of the Effectiveness of Intermittent Discharge of Sulfite Waste Liquor in Controlling the Growth of Sphaerotilus, Lower Columbia River, Spring 1962, a cooperative study conducted by the Oregon State Sanitary Authority, Portland,...
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United States Department of Agriculture
Forest Service
Pacific Northwest Region
October 1990
Draft Management Plan
for the
Special Management Areas
Columbia River Gorge
National Scenic Area
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Columbia River Gorge National Scenic Area
Draft Management Plan
for the
Special Management Areas
USDA Forest Service
Pacific Northwest Region
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Table of Contents
Preface
CHAPTER 1:
Background 1
Scenic Area Act History 2
Provisions of the Act 4
The Planning Process 9
Plan Implementation 15
Public Involvement 16
CHAPTER 2:
The Gorge Today 19
Introduction 19...
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CHAPTER 4:
Recreation Development 129
Introduction 129
Management Framework 130
Goals and Policies 133
The Concept Plan 136
Recreation Development Plan 139
Individual Site Development Proposals 142
Intrepretive Sites within...
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Preface
Public Law 99-663, the Columbia River Gorge National Scenic Area Act, was passed by Congress on October 17, 1986, and signed by President Ronald Reagan one month later on November 17, 1986. Among other requirements, the Act directed the...
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when the final Management Plan is completed by the Commission.
This draft Management Plan is provided to interested agencies and to the public for review and comment. Responses received by November 15, 1990, will be considered when the Forest...
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CHAPTER 1:
Background
Public Law 99-663, the Columbia River Gorge National Scenic Area Act, was signed by President Ronald Reagan on November 17, 1986. The Act provides direction for a unique partnership among federal, state, and local...
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Table 1:1. Scenic Area Acreage by County
GMAs SMAs Urban Areas
Multnomah County 6,596 31,150 550
Hood River County 34,953 20,910 4,066
Wasco County 52,180 4,894 5,903
Total Oregon 93,729 56,954 10,519
Clark County 8,215 1,091 0...
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Early on, the Forest Service played an active role in protecting and managing the resources of the Gorge. In 1893, Congress created the Cascade Range Forest Reserve, later combining it with the Bull Run Forest Reserve to become what was eventually...
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The 97th and 98th Congresses, from 1980 through 1984, made several attempts to introduce legislation aimed at establishing some form of federal management for the Gorge area. Citizens formed strong interest groups to promote their varying...
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