The Austin Lakes Index (ALI) was developed in 2010 to monitor and assess the chemical, biological, and physical integrity of Austin area lakes (Lake Austin, Lady Bird Lake and Walter E. Long Lake) on an annual basis.
The current ALI score for each lake can be seen here, along with the current sub-index scores that are used in the calculation of the ALI. For further detail, the Lakes Index Methodology is a comprehensive explanation of the program and methodologies for data collection and index calculation. Changes over time for each sub index (water quality, sediment, habitat, aquatic life, vegetation, eutrophication) and more detailed summaries for each lake are in the FAQs section.
Click here for answers to frequently asked questions.
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April 19, 2022
City Seeks Input for Rain to River: A Strategic Plan to Protect Austin’s Creeks and Communities
June 1, 2021
City of Austin modifying approach to harmful algae this summer
April 6, 2021
Toxins Found in Algae in Lake Austin
March 25, 2021
Increased Risk for Harmful Algae on Lady Bird Lake and Lake Austin
December 8, 2020
Cool weather brings an end to 2020 harmful algae season
July 20, 2020
Toxins Detected in Algae on Lady Bird Lake
July 10, 2020
Summer Brings Increased Risk of Harmful Algae on Lady Bird Lake
August 27, 2019
Harmful Algal Bloom on Lady Bird Lake continues
August 27, 2019
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