A -- THIS PROGRAM ANNOUNCEMENT FOR FEDERAL ASSISTANCE IS FOR RESEARCH ACTIVITIES RELATED TO DEVELOPING MANAGEMENT TOOL FOR PREDICTING MULTI-DIMENSIONAL SAND-BAR EVOLUTION, AND ONE-DIMENSIONAL SAND TRANSPORT IN THE COLORADO RIVER ECOSYSTEM. GRAND CANYON MONITORING AND RESEARCH CENTER (GCMRC).

Notice Date

April 10, 2001

Contracting Office

Department of the Interior, U.S. Geological Survey, 345 Middlefield Road,Mail Stop 285, Menlo Park, CA 94025-3591

ZIP Code

94025-3591

Solicitation Number

01WRPA0031

Response Due

June 15, 2001

Point of Contact

Joyce Stevenson, Contracting Officer, 650-329-4174, jstevenson@usgs.gov, Serena Mankiller, 52-0556-7094, smankiller@usgs.gov

E-Mail Address

Please provide contact information to Serena Mankiller (smankiller@usgs.gov)

Description

You must access http://www.gcmrc.gov the GCMRC web site for full information on this requirement. Before closure of Glen Canyon Dam, streamflow, suspended-sediment concentrations, suspended-sand grain size, and water temperature in the Colorado River through Glen, Marble and Grand Canyons varied greatly. Today, a variety of main channel conditions continue to influence sediment resources that support physical habitats, such as terrestrial and aquatic sand bars. Since 1963, the sand supply to the system has been reduced by about 90 percent. The remaining 10 percent is mostly introduced during discrete, short-duration floods from the Paria and Little Colorado Rivers (located 25 and 121 kilometers downstream of the dam, respectively). The purpose of this project is to develop a numerical simulation capability within a graphical user interface (GUI) that allows for estimating multi-dimensional sand bar evolution under varied flow and sediment-supply conditions, and predicting the fate of tributary sand inputs once they enter the Colorado River ecosystem under a variable range of Glen Canyon Dam operations. Such predictions are needed for a range of stream flow and sediment supply conditions, including stages and discharges ranging from 100 to 6,000 cubic meters per second, a range of sediment supply conditions determined on the basis of existing data depicting historical suspended-sand concentrations and grain sizes in the main channel of the Colorado River, and the historical seasonal range of streamflow thermal conditions, within selected geomorphic reaches of the main channel (pre-dam, immediate post-dam and present). The USGS/GCMRC welcomes highly innovative approaches to research for this integrated modeling effort, and encourages assemblage of multi-disciplinary teams of physical- and biological-science experts willing to reach beyond single-discipline studies into the realm of integrative, ecosystem science. The magnitude of funding for this project is not expected to exceed $490,000 over all years. The duration of the project may be more than one year, possibly 2001-2003. Proposals that meet the objectives specified under the program announcement will be evaluated and accepted or declined in the review process. Technical proposal formatting instructions are provided in the announcement. Federal Assistance applications will be available on the Grand Canyon Monitoring and Research Center's Web Site: http://www.gcmrc.gov You MUST register at the GCMRC web site. Paper copies may be obtained by calling Serena Mankiller at (520) 556-7094. However, all correspondence relating to the Program Announcement or other proposal information will ONLY be published at the GCMRC web site. No paper copies of subsequent solicitation documents are planned. Awards are anticipated on or about September 2001. Questions regarding the requirements may be submitted through the web site with responses published weekly. Awards may take the form of contracts, orders, or federal assistance awards. The NAICS Code is 54171. The Government reserves the right to select for award all, some, or none of the proposals received, and incrementally fund any award instrument. This announcement should not be construed as commitment or authorization to incur costs in anticipation of a resultant award. Information provided herein is subject to modification and in no way binds the Government to make an award.

Web Link

NEW RFP Release Integrated Aquatic & Terrestrial Model (http://www.gcmrc.gov)

Record

Loren Data Corp. 20010412/ASOL010.HTM (W-100 SN50I858)