a systematic procedure for characterizing mainly biophysical watershed and ecological processes to meet specific management and social objectives —note 1. watershed analysis is not a formal planning process but a stratum of ecosystem management planning applied to watersheds of approximately 20 to 200 mi² (51.8 to 518.0 km2) and evaluating the hierarchical relations between the watershed and its neighboring watersheds —note 2. watershed analysis is similar to watershed review, which is regarded as a less in-depth evaluationThis definition last updated 08/19/2008