Data provided as part of the "Find Your Watershed" viewer on the Watershed Protection pages of http://www.austintexas.gov/

The Environmental Integrity Index (EII) is a tool developed by the City of Austin’s Environmental Resource Management Division to monitor and assess the ecological integrity and the degree of impairment in Austin’s watersheds. This feature class provides the most recent results from the EII for the City of Austin Watershed Protection Department’s Masterplanning process. Similarly, the Austin Lakes Index was designed to provide a yearly assessment of the ecological integrity of Lake Austin, Lady Bird Lake, and Lake Long.

Index scores (from both the EII and ALI) are an integer between 0 and 100. Excellent 88-100 | Very Good 76-87 | Good 63-75 | Fair 51-62 | Marginal38-50 | Poor 26-37 | Bad 13-25 | Very Bad 0-12.

Problem Scores are an integer between 1 and 100 with 1 being "No Problem" and 100 being a highest priority.

EII Methodology:

Master Plan Problem Score Methodology:

Lake Index Methodology:

Data provided as part of the "Find Your Watershed" viewer on the Watershed Protection pages of http://www.austintexas.gov/

Data collected to assess water quality conditions in the natural creeks, aquifers and lakes in the Austin area. This is raw data, provided directly from our Field Sample database (FSDB) and should be considered provisional. Data may or may not have been reviewed by project staff. Data quality (QC) flags have been provided to aid in the assessment of the data; R-flagged data should be considered suspect, but is provided as it represents taxpayer expenditure and the efforts undertaken to characterize the status of our environment. Note that some data over time will be improved and edited for accuracy and that QC flags can change based upon changes in project criteria. Additional data may be availabe from other agencies (USGS, TCEQ, LCRA) and should be requested from them directly; some of this data may appear in those datasets.

This layer represents the buffered geography around the known landfills in and around the City of Austin, Texas. Due to the uncertainty of the boundaries of the landfills; the buffers are used to regulate development in close proximity to the landfills. Areas of known landfill boundaries utilize the 200' buffer. Areas where general knowledge of the landfill location is known utilize a 1500' buffer.

Areas that are within City of Austin publicly-owned land that have been identfied as Grow Zones in a collaboration between Parks and Recreation and Watershed Protection Departments. Contains primary contact information, acreage, watershed designations and a description of the prescribed maintenance regime that will enable restoration of healthy ecological function.

This dataset entails the delineation of impervious surfaces and artificial land cover types extracted from aerial imagery captured in early 2021.

Utilization within the City of Austin

The dataset plays a pivotal role in several municipal functions, encompassing the computation of the Drainage Charge managed by the Watershed Protection Department, wildfire assessments, emergency operations planning, transportation asset monitoring, urban forest management, and more.

Data Updates

New aerial imagery and impervious cover data are acquired by the city every two years, resulting in distinct datasets for each capture. As of its initial capture in early 2021, there have been no subsequent updates to this dataset.

Downloading Instructions

Some users have reported issues downloading the data. Due to the large size of the dataset, downloading can take longer than expected. We recommend following these instructions to download the data.

1. Click on 'Export'.


2. Choose the desired export format from the dropdown menu.


3. Initiate the download by clicking 'Download'.


4. It's essential to allow your browser ample time to process the download. Even if no immediate action appears to occur, please refrain from closing the browser window. Depending on your internet speed, the download process can take between 10 to 30 minutes due to the substantial size of the data.


5. Once the download commences in your browser, allow it to finish entirely.


6. Should you encounter any issues during the download process, kindly contact the dataset owner for assistance.

These are the geographic boundaries for reaches evaluated as part of the Environmental Integrity Index and Austin Lakes Index . Scores can be found in tabular form: https://data.austintexas.gov/Environment/Watershed-Reach-Index-and-Problem-Scores/vk3r-6prc

100 foot buffers of stream centerlines with drainage areas of 64 acres or greeater

Data collected to assess water quality conditions in the natural creeks, aquifers and lakes in the Austin area. This is raw data, provided directly from our Field Sample database (FSDB) and should be considered provisional. Data may or may not have been reviewed by project staff. Data quality (QC) flags have been provided to aid in the assessment of the data; R-flagged data should be considered suspect, but is provided as it represents taxpayer expenditure and the efforts undertaken to characterize the status of our environment. Note that some data over time will be improved and edited for accuracy and that QC flags can change based upon changes in project criteria. Additional data may be availabe from other agencies (USGS, TCEQ, LCRA) and should be requested from them directly; some of this data may appear in those datasets.