BPA Fish and Wildlife FY 1997 Proposal

Section 1. Administrative
Section 2. Narrative
Section 3. Budget

see CBFWA and BPA funding recommendations

Section 1. Administrative

Title of project
Lower Snake Spillway Crest Drawdown

BPA project number   5516200

Business name of agency, institution or organization requesting funding

Sponsor type   Placeholder

Proposal contact person or principal investigator

 Mailing address

BPA technical contact   ,

Biological opinion ID   Research M&E Program; Hypothesis B3.3.

NWPPC Program number   5.0F.3, 5.3B.11

Short description
Project would attempt to prove/disprove hypothesis that smolt survival cannot be increased by drawdown of Snake River hydroelectric projects to spillway crest.

Project start year   1997    End year   

Start of operation and/or maintenance   0

Project development phase   PLANNING

Section 2. Narrative

Related projects
The Corps is not planning to fund these projects based on a lack of scientific justification at this point.

Project history

Biological results achieved

Annual reports and technical papers

Management implications
Results of study could affect volumes and timing of flows needed during the spring/summer migration; this in turn could affect amount and timing of availability of power from the hydrosystem; drawdowns, depending on the extent, can affect other uses of the dams and reservoirs, e.g., irrigation, recreation, use of juvenile collection facilities, etc. . In addition, the results of this study should clearly either support or counter the use of spillway crest drawdown to improve salmon survival, thereby directing the use of available funds to those measures that are truly improving the survival of listed stocks.

Specific measureable objectives
Determine: [1] fish guidance efficiency of shallowly submerged traveling screens operating under low hydrostatic head, [2] how to remove large numbers of smolts from gatewells, [3] effects of altered bypass conditions on smolt condition, [4] effects of altered dam operating conditions on adult passage and fallback, [5] effects on predation, and [6] interactive ecology in pools and river downstream from projects.

Testable hypothesis

Underlying assumptions or critical constraints


Brief schedule of activities

Biological need

Critical uncertainties

Summary of expected outcome

Dependencies/opportunities for cooperation

Risks associated with some tests are extremely high. Most cannot be addressed without a test drawdown during periods when smolts and/adults are actively migrating, thus placing large numbers of salmon at risk if problems are encountered.

Monitoring activity

Section 3. Budget

Data shown are the total of expense and capital obligations by fiscal year. Obligations for any given year may not equal actual expenditures or accruals within the year, due to carryover, pre-funding, capitalization and difference between operating year and BPA fiscal year.

Historic costsFY 1996 budget data*Current and future funding needs
(none) New project - no FY96 data available 1997: 0

* For most projects, Authorized is the amount recommended by CBFWA and the Council. Planned is amount currently allocated. Contracted is the amount obligated to date of printout.

Funding recommendations

CBFWA funding review group   System Policy

Recommendation    Tier 2 - fund when funds available

Recommended funding level   $0