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
Estuary Physical and Biological Conditions

BPA project number   5517200

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; hyp C.1.4

NWPPC Program number   

Short description
Influence of timing and duration of estuarine residence, hydro conditions, prey availability and estuarine habitat alterations on smolt survival.

Project start year   1997    End year   2007

Start of operation and/or maintenance   0

Project development phase   PLANNING

Section 2. Narrative

Related projects

Project history

Biological results achieved

Annual reports and technical papers

Management implications
These studies of juvenile salmon ecology in the estuary will aid the resource manager discriminate between natural variability in survival and response to anthropogenic alterations.

Specific measureable objectives

Testable hypothesis
Hypothesis C.1.4: Timing and duration of estuarine residence; and hydrologic conditions, prey availability, and habitat alterations in the estuary do not influence smolt survival

Underlying assumptions or critical constraints


Brief schedule of activities

Biological need
Management agencies have long argued that the hydropower system and an altered hydrograph could cause smolts to arrive later in the estuary and out of synchrony with best conditions for survival. On the other hand, transportation has the potential to take some smolts to the estuary too early for best survival opportunities for particular demes. More information is needed on windows of opportunity for various demes. The length of stay and distribution of residence of subyearlings may be influenced by delay or acceleration of arrival in the estuary.

Many natural and anthropogenic factors affect the survival of juvenile salmon in the lower Columbia River. Because the transition from freshwater to saltwater requires critical physiological alterations by juvenile salmon, hydrologic and climatic conditions, including salinity, temperature, currents, and nutrient availability for primary and secondary production can influence survival. Certain biological variables may also effect smolt survival during this period, for example timing and duration of estuarine residence and prey availability. Numerous anthropogenic factors (including habitat loss and alteration, riverine discharges of agricultural, industrial and urban nutrients and toxic chemicals) also could affect the growth and survival of juvenile chinook salmon in the estuary. These studies of juvenile salmon ecology in the estuary will aid the resource manager discriminate between natural variability in survival and response to anthropogenic alterations.

Critical uncertainties

Summary of expected outcome

Dependencies/opportunities for cooperation


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: 1,000,000
1998: 1,000,000
1999: 1,000,000
2000: 1,000,000
2001: 1,000,000

* 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   $1,000,000