The EII is a program designed to continuously monitor and assess the chemical, biological, and physical integrity of Austin’s creeks and streams. Currently, all watersheds are monitored on a two-year rotating basis.
Water chemistry data from multiple sites within each watershed is collected quarterly while biological and physical surveys are conducted annually. The Watershed Summary Report is a comprehensive document that includes the program description, methods, raw data for the most recent sample year and data summaries over time for each watershed. Due to the large size of the document, summaries for each watershed can be accessed individually in the FAQs section below.