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This report describes Action Effectiveness Monitoring program accomplishments during October 1, 2015 to September 30, 2016, or Year 12 of this on-going project. For more information on this project since its inception in 2007, please see previous years' annual reports.

This report describes Action Effectiveness Monitoring program accomplishments during October 1, 2014 to September 30, 2015, or Year 11 of this on-going project. For more information on this project since its inception in 2007, please see previous years' annual reports.

September - October 1992: High enterococcus bacteria counts detected during a reconnaissance survey in 1991 indicated a possible public health risk in the lower Columbia River. The purpose of this project was to determine if a chronic public health risk exists during high contact recreation periods due to bacteria contamination. Ecology sampled twelve stations between the mouth of the Columbia River and river mile 170 (Hood River) weekly- from September 1 to October 12, 1992. Fecalcoliform and enterococcus bacteria were monitored, as well as oxygen, temperature, pH, and conductivity. Water

This document is one of a set of publications and other materials produced by the Columbia River Estuary Data Development Program (CREDDP). CREDDP has two purposes: to increase understanding of the ecology of the Columbia River Estuary and to provide information useful in making land and water use decisions. The program was initiated by local governments and citizens who saw a need for a better information base for use in managing natural resources and in planning for development. In response to these concerns, the Governors of the states of Oregon and Washington requested in 1974 that the