1. THE TIJUANA RIVER WATERSHED NSDI COMMUNITY DEMONSTRATION PROJECT FLOOD RISK ASSESSMENT FOR THE LOWER WATERSHED

16. MAJOR ISSUES IN THE WATERSHED Water pollution and flooding are significant problems Natural resources are being rapidly depleted Infrastructure improvements are not keeping pace with population growth Inadequate data exist concerning the demographic, economic, infrastructural, and economic characteristics of the watershed Transborder communications and data access are inadequate Transborder asymmetries in technology, culture, and funding are substantial

17. PROJECT IDENTIFICATION Selection as a NSDI demonstration site Convene project representatives Survey issues, data availability, and data quality Stakeholder workshop to define project

18. TRW DEMONSTRATION APPLICATION SELECTION CRITERIA Address binational issues of concern Integrate human and environmental dimensions Build upon existing efforts and GIS expertise at SDSU and COLEF Doable and capable of being completed by June 2000 Demonstrate how the NSDI can be applied to meet local needs

19. PROJECT OBJECTIVES Assess flood risk in the Lower Tijuana River Watershed and Goat Canyon/Cañon de los Laureles Educate decision-makers in the use of GIS tools for assessing community vulnerability to flooding Develop NSDI compliant database Promote broad use of community-based natural hazard risk assessment methodology using GIS Long term goal: To develop a flood forecasting model and warning system

20. RESEARCH QUESTIONS What areas of the lower Tijuana River Watershed and Goat Canyon/Cañon de los Laureles are likely to be inundated by 25, 50, 100, and 500 year flood events? What are the human communities and natural environments that are vulnerable to 25, 50, 100, and 500 year flood events? How has/will changing land use affect flood risk?

21. FLOOD HAZARD MODELLING METHODOLOGY

25. NSDI PROJECT RESULTS Assessment of flood risk in the lower Tijuana River Watershed Updated flood risk zones for the Tijuana River Valley NSDI compliant publicly accessible database Improved binational coordination among government agencies, universities, and the private sector

26. FUTURE GOALS Binational flood forecasting strategy Refinements in flood and slope stability models NSDI data node Binational NSDI training Bilingual web site Accuracy assessment of imaging technologies for flood vulnerability analysis

27. BENEFICIARIES OF THE DEMONSTRATION PROJECT City and flood plain managers Emergency response planners Residents in the project area

28. PROJECT TEAM Local –San Diego State University (Local NSDI Champion) –El Colegio de la Frontera Norte –Tijuana River National Estuarine Research Reserve Federal –National Ocean Service - National Estuarine Research Reserve Division, International Programs Office Private sector –Environmental Systems Research Institute, Inc. (ESRI) –Sun Microsystems, Inc.

29. ADVISORY COMMITTEE IMPLAN, City of Tijuana Planning Department Comisión Nacional de Agua Dirección de Protección Civil Estatal Dirección de Protección Civil Municipal International Boundary and Water Commission –Mexico Section Tijuana River National Estuarine Research Reserve County of San Diego Federal Emergency Management Agency International Boundary and Water Commission –U.S. Section Coastal Services Center, NOAA Tia Juana Valley County Water Distict National Weather Service, NOAA MEXICO UNITED STATES