This glossary is provided as a reference for technical terms found within the ACE Basin Characterization. It should be noted that many words have multiple usage and all definitions (usages) may not be provided here. Following each term in the list below is a number that refers to the reference (source material) for the definition. The references are listed following the definitions. In many cases, the definitions have been modified from those found in the source material. Use the "back button" to return to the narrative text from the glossary.