Framework / Assessment Oregon Indicators of Sustainable Forest Management Summary This indicator will help assess the quality of water in forest streams. This indicator will provide tabular, graphical, and map information that integrates complex analytical water quality data and generates a single number expressing the degree of impairment of a given water body. Data for this indicator will be used to report the status of specific forest stream reaches and miles of forest streams or the percent of forest stream miles with a poor, fair, or good water quality index.