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.

Click here for answers to frequently asked questions

State of Our Environment Report

Download the State of Our Environment Report for information on key indicators related to water quality, air quality, and green infrastructure. The Report reflects the City's efforts to protect and preserve Austin under continuing pressure from drought and population growth that can negatively impact sensitive water and air quality, as well as ecological systems that include urban forests and critical habitat.

How clean are our waterways? The Watershed Protection Department's main goals for Austin's aquifers are to maintain water quality, manage invasive species, and control the amount of trash. Download the State of Our Environment Report to learn more.