1. Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department

2.  Index of Riparian Integrity  City of Austin Riparian Assessments  Building the Model Integrity Indicator Variables Spatial Component  Model Selection  Model Results  Questions

3. Macro-scale model based on aerial photography and land use data to assess and quantify the riparian integrity in Austin, TX

4. Assessment includes water quality, sediment stability, and riparian vegetation scores Assessment performed at one site for an entire reach

5. Environmental Integrity Indicator Weighting Matrix Error Explanatory Variables: Landscape Values

6. Environmental Integrity Indicator Index

7. Explanatory Variables: Landscape Values

13. Robust Vegetation Sparse Vegetation Shadow Impervious Cover Woody VegetationWater

14. Multi Family Single Family CommunityAgriculture/Undev ManufacturingUtilities/Roads OfficePark/Preserve Commercial

17. Weighting Matrix

18. LBA1LBA2LBA3 LBA10d 12 -1 d 13 -1 LBA200d 23 -1 LBA3000 LBA1 LBA2 LBA3

19.  Single variable of most significance was Woody Vegetation in the 50ft buffer in small drainage areas (64-320 acres).  General Linear Models were compared via BIC, Adjusted R 2  Multicollinearity and model diagnostics were compared for top models

20. 50 ft. Buffer400 ft. Buffer SmallMediumLargeSmallMediumLarge Impervious Cover Sparse Vegetation Single Family Residential Robust Vegetation Woody Vegetation Residential: Duplex Sparse Vegetation Roads Woody Vegetation Apartments Single Family Residential *Small = 64-320acres, Medium = 320-640acres, Large = >640acres

21. Poor [25-37] Marginal [38-50] No Score Very Good [76-87] Good [63-75] Fair [51-62]

27.  Mateo Scoggins and Surface Water Team City of Austin, Environmental Resource Mgmt.  Jon Meade and Kathryn Murray City of Austin, Policy and Planning