Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
- Keyword
-
- Arctostaphylos uva-ursi -- Oregon -- Bandon (1)
- Environmentally sensitive areas -- Oregon (1)
- Estuarine restoration -- Lower Columbia River (Or. and Wash.) (1)
- Hydraulic gates -- Environmental aspects -- Lower Columbia River (Or. and Wash.) (1)
- Hydraulic gates -- Evaluation (1)
-
- Incentives in soil conservation (1)
- Introduced aquatic organisms -- Control -- Oregon -- Lake Oswego (1)
- Introduced aquatic organisms -- Oregon -- Lake Oswego -- Prevention (1)
- Introduced organisms -- Oregon -- Lake Oswego (1)
- Lake Oswego (Or. : Lake) (1)
- Mount Saint Helens (Wash) -- Eruption (1980) (1)
- Natural resources conservation areas -- Oregon -- Bandon -- Management (1)
- Phacelia -- Oregon -- Bandon (1)
- Pollutants -- Columbia River Watershed (1)
- Runoff -- Management -- Citizen participation (1)
- Salmon -- Habitat -- Columbia River Estuary (Or. and Wash.) (1)
- Stormwater infiltration -- Oregon -- Gresham (1)
- Tides -- Columbia River Estuary (Or. and Wash.) (1)
- Urban runoff -- Oregon -- Gresham -- Management (1)
- Vegetation surveys (1)
- Volcanic eruptions -- Washington (State) -- Mount Saint Helens -- Measurement (1)
- Water quality management (1)
- Water quality management -- Columbia River Watershed (1)
- Water temperature -- Lower Columbia River (Or. and Wash.) (1)
- Watershed management -- Environmental aspects -- Columbia River Watershed (1)
Articles 1 - 6 of 6
Full-Text Articles in Physical Sciences and Mathematics
Effects Of Tide Gate Replacement On Water Temperature In A Freshwater Slough In The Columbia River Estuary, Sara Ennis
Effects Of Tide Gate Replacement On Water Temperature In A Freshwater Slough In The Columbia River Estuary, Sara Ennis
Environmental Science and Management Professional Master's Project Reports
Dramatic declines in salmon populations in the Pacific Northwest have brought new attention to the importance of estuarine rearing habitats. Levees and tide gates used to convert estuarine wetlands into farmland have reduced available habitat by more than half of historical levels. Recent efforts to restore estuarine habitats include tide gate replacement, though this method has been poorly studied. As a key indicator of salmon habitat suitability, temperature was used to evaluate the effects of tide gate replacement in a tidally influenced freshwater slough in the Lower Columbia River estuary. Three tide gates in the largest slough on Tenasillahe Island …
Invasive Species Management Plan For Oswego Lake, Daniel Warren, Mark Sytsma
Invasive Species Management Plan For Oswego Lake, Daniel Warren, Mark Sytsma
Environmental Science and Management Professional Master's Project Reports
This Invasive Species Management Plan defines an overarching strategy for the Lake Oswego Corporation (LOC) to mitigate threats from invasive species to Oswego Lake. Invasive species pose a direct risk to recreational and aesthetic uses of the lake, critical LOC infrastructure, and ecological communities within the lake. The Plan is particularly concerned with two bivalve mollusks in the genus Dreissena: the zebra mussel (Dreissena polymorpha) and the quagga mussel (Dreissena bugensis). These mussels grow in dense colonies that damage watercraft and underwater structures as well as displace native species. A recent scientific report found that …
Calculating The Volume Of The May 18, 1980 Eruption Of Mount St. Helens, Dâvid Nuñez Wickham
Calculating The Volume Of The May 18, 1980 Eruption Of Mount St. Helens, Dâvid Nuñez Wickham
Environmental Science and Management Professional Master's Project Reports
The May 18, 1980 eruption of Mount St. Helens created a massive amount of sediment and debris, thought to be as much as 5.5 billion cubic yards. This sediment causes infill of river stretches and collects along levees protecting southwest Washington State. The sediment must be removed to ensure these areas do not flood. The US Army Corps of Engineers (USACOE) is tasked with flood protection for southwest Washington State and the levees protecting the cities of Castle Rock, Lexington, Kelso, and Longview. The Sediment Retention Dam, opened in 1989 is able to filter out larger particulate but fine grain …
State Of The River Report For Toxics, Bradley Carter
State Of The River Report For Toxics, Bradley Carter
Environmental Science and Management Professional Master's Project Reports
The United States Environmental Protection Agency (EPA) strives to prevent pollution, protect water quality and improve ecosystems in order to reduce risks to human health and the environment. As outlined in the Agency’s Strategic Plan, the Columbia River Basin was identified as a "National Priority" and designated as one of our nation’s seven "Large Aquatic Ecosystems". This designation grants legislative status equal to the Chesapeake Bay, Great Lakes, Gulf of Mexico, South Florida Ecosystem, Long Island Sound and Puget Sound. The Strategic Plan is the Agency’s road map of future work efforts, and targets specific goals that are expected to …
The Mckee Preserve Management Options At Bandon Dunes Golf Resort, Ashley Marie Edwards
The Mckee Preserve Management Options At Bandon Dunes Golf Resort, Ashley Marie Edwards
Environmental Science and Management Professional Master's Project Reports
The McKee Preserve is a new conservation area at Bandon Dunes Golf Resort, located on the southern Oregon coast. The Preserve is 250 acres in size and is made up of 13 different natural resource communities. One important resource is silvery phacelia (Phacelia argentea), which is a state threatened plant species and is a species of concern federally. The goal of this project was to perform plant inventories for silvery phacelia and kinnikinnick that will be used to establish a functional management plan for the Preserve. Other resources of interest to the Preserve have been included in the …
Downspout Disconnection Suitability And Incentives Analysis For The City Of Gresham, Oregon, Brian C. Fletcher
Downspout Disconnection Suitability And Incentives Analysis For The City Of Gresham, Oregon, Brian C. Fletcher
Environmental Science and Management Professional Master's Project Reports
The City of Gresham is developing a Downspout Disconnection Program, which encourages homeowners to disconnect their roof downspouts from the storm sewer system and divert the stormwater onto their lawn or rain garden. Downspout disconnection is being evaluated for its effectiveness to help the city meet stormwater discharge requirements in their NPDES-MS4 permit from Oregon DEQ. This study reviewed current Natural Resources Conservation Service (NRCS) soil data and developed a suitability map showing High, Medium and Low suitability zones for on-site stormwater management. To validate the map, 55 soil textural classes and 11 infiltration rates were determined at residences throughout …