1. Estimation Tool for Impervious Surfaces (ETIS) Anna Chabaeva Jason Parent Daniel Civco Department of Natural Resources Management & Engineering The University of Connecticut U-4087, Room 308, 1376 Storrs Road Storrs, CT 06269-4087

2. Objectives Describe functionality of newly developed ETIS tool Compare predicted amount of imperviousness to: highly accurate and precise planimetric data ISAT derived impervious surface data (NLCD, CCL) NLCD 2001 impervious surface layer CCL 2002 impervious surface layer

3. Impervious Surface (IS) The imprint of land development on the landscape: Rooftops Buildings Pools Patios Transportation System Roads Sidewalks Driveways Parking lots

4. Influence of Impervious Surfaces on Water Quality 100 90 80 70 60 50 40 30 20 10 0 DEGRADED PROTECTED IMPACTED WATERSHED IMPERVIOUSNESS (%)

5. ETIS – Regression Model where - b 1 is the IS-axis intercept - b 2 is the coefficient for population density - b i are those for percentage of land cover category area within the tract - PopDen is the Population density - %A i are the percent of the land cover category area within the tract Calibration Data 221 NY tracts Validation Data 82 CT tracts

6. ETIS Overview IS for existing conditions IS for changing conditions

7. ETIS Data Requirements

8. ETIS Data Requirements Land Cover GRID, IMG, TIFF

9. ETIS Data Requirements Analysis Unit SHP

10. ETIS Data Requirements Percent Imperviousness Estimates

11. ETIS Data Requirements Population Density People/sq mi

12. Preloaded ETIS Data Requirements Coefficients DBF

13. ETIS Data Requirements Change Layer SHP

14. ETIS Comparison RMSER-squared NLCD Sub-pixel6.840.93 CCL Sub-pixel10.880.95 NLCD ISAT5.260.94 CCL ISAT7.230.91 NLCD ETIS3.610.95 CCL ETIS5.090.91

15. ETIS Web Site http://clear.uconn.edu/tools/geospatial/etis/index.html

16. ETIS Download http://clear.uconn.edu/tools/geospatial/etis/index.html

17. Estimation Tool for Impervious Surfaces (ETIS) Anna Chabaeva Jason Parent Daniel Civco Department of Natural Resources Management & Engineering The University of Connecticut U-4087, Room 308, 1376 Storrs Road Storrs, CT 06269-4087 anna.chabaeva@uconn.edu