The report provides the NHEP, state natural resource managers, local officials, conservation organizations, and the public with information on the effects of management actions and decisions. Prior to developing each State of the Estuaries report, the NHEP publishes four technical data reports (indicator reports) that illustrate the status and trends of the complete collection of indicators tracked by the NHEP. Each report focuses on a different suite of indicators: Shellfish, Water Quality, Land Use and Development, and Habitats and Species. All of the indicators are presented to the NHEP Technical Advisory Committee, which selects a subset of indicators to be presented to the NHEP Management Committee and to be included in the State of the Estuaries report. The Management Committee reviews the indicators and finalizes the list to be included in the report. Between 10 and 20 indicators are included in each State of the Estuaries report. The 2006 Water Quality Indicator Report is the second NHEP indicator report for water quality. Data from this report will be used in the 2006 State of the Estuaries report.