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This report describes Ecosystem Monitoring Project accomplishments during September 1, 2007 to August 31, 2008, or Year 4 of this on-going project. For a background on the project since its inception in 2003, please see previous years' annual reports.

This report describes Ecosystem Monitoring Project accomplishments during September 1, 2006 to August 31, 2007, or Year 3B of this on-going project. For a background on the project since its inception in 2003, please see previous years' annual reports.

This report describes Ecosystem Monitoring Project accomplishments during September 1, 2005 to August 31, 2006, or Year 3 of this on-going project. For a background on the project since its inception in 2003, please see previous years' annual reports.

This report describes Ecosystem Monitoring Project accomplishments during September 1, 2004 to August 31, 2005, or Year 2 of this on-going project. For a background on the project since its inception in 2003, please see previous years' annual reports.

Draft of habitat monitoring plan for the lower Columbia River, prepared by the Lower Columbia River Estuary Partnership for Bonneville Power Administration. The purpose of this plan is to provide a detailed, statistically valid sampling plan for status and trends monitoring of salmon habitats. It also supports restoration action effectiveness research.

This document describes the concept, organization, and application of a hierarchical ecosystem classification that integrates saline and tidal freshwater reaches of estuaries in order to characterize the ecosystems of large flood plain rivers that are strongly influenced by riverine and estuarine hydrology. We illustrate the classification by applying it to the Columbia River estuary (Oregon-Washington, USA), a system that extends about 233 river kilometers (rkm) inland from the Pacific Ocean.

This study investigates concentrations of persistent organic pollutants in juvenile Chinook Salmon from various Columbia River stocks and life history types to evaluate the potential for adverse effects in these threatened and endangered fish.

The overall quality of the Columbia River estuary, which forms the border between Washington and Oregon, is described in this report using data collected as part of the Western Environmental Monitoring and Assessment Program (EMAP). EMAP was initiated by EPA's Office of Research and Development (ORD) to estimate the current status and trends in the condition of nation's ecological resources. EMAP also examines associations between these indicators and natural and human-caused stressors.

This report describes Action Effectiveness Monitoring program accomplishments during September 1, 2011 to September 30, 2012, or Year 8 of this on-going project. For a background on the project since its inception in 2007, please see previous years' annual reports.

This report describes Action Effectiveness Monitoring program accomplishments during September 1, 2010 to September 30, 2011, or Year 7 of this on-going project. For a background on the project since its inception in 2007, please see previous years' annual reports.