1. SITES SOFTWARE APPLICATION SEMINAR INTRODUCTION to SITES __________________________ SITES 2005 INTEGRATED DEVELOPMENT ENVIRONMENT for WATER RESOURCE SITE ANALYSIS

2. HISTORY Program Developed Over Time by NRCS Spillway Erosion Technology Developed Jointly by ARS and NRCS Interface, IDE continuing to be developed to provide a user-friendly environment

3. 25 years

4. DAM CLASSIFICATION DAM CLASSIFICATION NRCS Dams Inventory CLASS aa c %

5. SITES ? ? ? Watershed Rainfall-Runoff Streamflow routing Reservoir Routing Principal spillway rating Auxiliary spillway rating NRCS dam design features Earth Spillway Analysis

6. HISTORY Program Developed Over Time by NRCS Spillway Erosion Technology Developed Jointly by ARS and NRCS Interface, IDE continuing to be developed to provide a user-friendly environment

7. ERODED SPILLWAY

8. LABORATORY SPILLWAY MODEL

9. SPILLWAY EROSION PHASES 1. SURFACE EROSION 1. SURFACE EROSION (Cover Destruction) 2. CONCENTRATED FLOW EROSION 3. HEADCUT ADVANCE

10. HISTORY Program Developed Over Time by NRCS Spillway Erosion Technology Developed Jointly by ARS and NRCS Interface, IDE, developed to provide a user-friendly operating environment

12. In January 2006 the new Version 2005 was released