SOLICITATION NOTICE
R -- Estuarine Habitat and Juvenile Salmon - Current and Historic linkages in the lower Columbia River and Estuary
- Notice Date
- 6/7/2006
- Notice Type
- Solicitation Notice
- NAICS
- 541990
— All Other Professional, Scientific, and Technical Services
- Contracting Office
- Department of Commerce, National Oceanic and Atmospheric Administration (NOAA), Western Administrative Support Center, 7600 Sand Point Way, Northeast, Seattle, WA, 98115-6349
- ZIP Code
- 98115-6349
- Solicitation Number
- WASC-6-0774
- Response Due
- 6/21/2006
- Archive Date
- 7/6/2006
- Description
- This requirement is being procured and an award will be made in accordance with FAR Part 13, Simplified Acquisitions Procedures. The office of NOAA, National Marine Fisheries Service (NMFS) intends to procure on a sole-source basis with Portland State University, Department of Civil and Environmental Engineering the characterize effect of flow and sediment varistion in the Lower Columbia River and Estuary during the period July 2006 through June 2007. Variations in river flow, salinity, tidal, and sediment transport regimes of the Columbia River and its estuary have had a profound effect on Columbia River salmonids and their habitat. Human influences include the hydropower system (the largest single factor), irrigation withdrawal, navigational development, diking and filling, and changes in land use throughout the basin. These human alterations interact with each other and are difficult to separate from the influence of climate. Climate processes include a long-term increase in temperature, a decrease (relative to the 19th Century) in flow, and fluctuations in flow related to the Pacific Decadal Oscillation (PDO) and the El Ni?o-Southern Oscillation (ENSO) cycle. Understanding how the river-flow, salinity, tidal, and sediment-supply regimes in the Columbia River system are evolving and how they interact with habitat availability will provide information critical to development of management strategies, including the maintenance and restoration of shallow water habitats used by juvenile salmon. Task - Climate and human effects on river flow and sediment input. Attempts to restore salmon habitat in the Columbia River tidal-fluvial regime require that the interaction of basic physical processes (e.g., river flow, tides, and sediment input) with habitat be defined. It is also important to define and model the trajectory of physical changes over recent decades, and determine how this has influenced salmonids, salmonid habitat, and the tidal-fluvial ecosystem and as whole. We will, therefore, use available data, new data analysis methods, and models to determine: 1) how changes in the salinity and tidal regimes affect habitat availability, 2) how river flow and sediment input to the system are related to climate and human alterations, and 3) how the variations between sub-basins of climate and anthropogenic effects affect lower river habitats. Task - The interaction of tides, river flow, and shallow water habitat area. This project approaches the above issues from the point of view: a) that data analyses are needed to reveal issues that need attention, and b) that simple models, especially those that are heavily constrained by data yet true to the underlying physics, are an extremely cost-effective means to understand processes and guide management. Thus, this task uses innovative data analysis methods and intelligently targeted models to determine how the tidal regime is affected by changes in flow magnitude and seasonality. River flow controls juvenile salmonid habitat availability directly by altering river stage, and indirectly by influencing tidal range. There is also a daily power peaking cycle that propagates downriver to the vicinity of Beaver, changes the character of the tide above Beaver, and affects the timing of high and low waters. These processees are relevant to salmonids for several reasons. First, it is important that Chum redds immediately below Bonneville Dam remain underwater during certain key periods, and water elevations in this portion of the river are a function of both dam operation and the oceanic tidal influence. Second, tidal range affects juvenile salmonid habitat location and availability during their migration through the lower river and estuary. Alterations of seasonality and strength of the annual river flow cycle and especially the changes in volume and timing of the spring freshet mean that the annual cycle of tidal range has changed since construction of the hydropower system. The net result is that habitat for juvenile salmonids has been displaced in time and space. Habitat availability reaches a maximum earlier in the season than historically and has been relegated to lower elevations (and decreased in extent) by the reduction in river stage in spring. Its character has changed both because of the displacement, and because tidal range during spring has increased. This notice may represent the only official notice. This is a simplified acquisition with an estimated value of less than $100,000
- Place of Performance
- Address: Columbia River, Portland Oregon
- Record
- SN01063954-W 20060609/060607220819 (fbodaily.com)
- Source
-
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