GAO Report: Environmental Indicators - Better Coordination is Needed to Develop Environmental Indicator Sets that Inform Decisions (pdf file ~2.5 MB)

Additionally, the results of the GAO practitioner survey have been published as a special Internet-only product entitled Survey of Environmental Indicator Sets (GAO-05-56SP). You can access these results via http://www.gao.gov/special.pubs/gao-05-56sp.