Department of Water Resources California Levee Database (CLD) An ongoing Initiative to Collect and Catalog Data for California’s Levees and Flood Control Structures by Floodplain Management Branch.

Purpose “Better Understanding of and Reducing Risks from Reasonably Foreseeable Flooding” (Floodplain Management Task Force Report) “Better Understanding of and Reducing Risks from Reasonably Foreseeable Flooding” (Floodplain Management Task Force Report) Levees play critical role in the State Levees play critical role in the State Levee risk not well known Levee risk not well known Influenced by Paterno decision Influenced by Paterno decision Greater political focus Greater political focus Other potential uses Other potential uses Mapping, project planning Mapping, project planning Inspections, maintenance Inspections, maintenance Emergency management Emergency management Critical infrastructure Critical infrastructure National interest in project National interest in project USACE USACE FEMA FEMA

Fundamental Benefits Database definition of a levee (core attributes) Database definition of a levee (core attributes) Current and searchable statewide inventory Current and searchable statewide inventory Centralize data storage Centralize data storage Establishment of unique identification of flood control segments and systems Establishment of unique identification of flood control segments and systems Provide framework for management of related information Provide framework for management of related information

History 1997 initial centerlines were created through 1997 initial centerlines were created through the combined efforts of USACE USACE FEMA FEMA OES OES Initial data collection with funding from Initial data collection with funding from DWR & FEMA DWR & FEMA Technical Resource Pilot Project Technical Resource Pilot Project (Santa Clara) Historic geotechnical boring location collection Historic geotechnical boring location collection Web application development Web application development Technical Resource data collection Technical Resource data collection Continued data collection Continued data collection Interagency coordination Interagency coordination Data sharing management Data sharing management NLD/MLI Data integration/model development NLD/MLI Data integration/model development Web application development Web application development Technical Resource data collection Technical Resource data collection Web application development Web application development Attribution data collection Attribution data collection Align with NLD data model Align with NLD data model Integrate data from FEMA MLI Integrate data from FEMA MLI Project levee attribute refinement Project levee attribute refinement Non-project levee data collection Non-project levee data collection ArcServer Web viewer (CLASIS) ArcServer Web viewer (CLASIS) CVFED, SPFC, CVFPP support CVFED, SPFC, CVFPP support SPFC footprint refinement SPFC footprint refinement NULE document integration NULE document integration

Initial Data Sources Office of Emergency Service (OES) Office of Emergency Service (OES) DWR DWR Project levees Project levees Delta levees Delta levees USACE USACE Comprehensive Study Comprehensive Study FEMA FEMA FIRMs FIRMs DFIRMs DFIRMs FLIS FLIS Local agencies Local agencies Cities, counties Cities, counties Flood control districts Flood control districts Reclamation districts Reclamation districts Levee maintenance districts Levee maintenance districts Public maps Public maps USGS 7.5 min topo USGS 7.5 min topo USGS digital orthophoto USGS digital orthophoto Other maps, aerial photos Other maps, aerial photos Google Google

Levee Database Design Data stored at CDEC on a Unix server Data stored at CDEC on a Unix server DWR’s Levee Database is stored in an Oracle 10g Relational Database Management System (RDBMS) DWR’s Levee Database is stored in an Oracle 10g Relational Database Management System (RDBMS) Access to spatial features is conducted via ESRI’s ArcSDE (Spatial Data Engine) Access to spatial features is conducted via ESRI’s ArcSDE (Spatial Data Engine) Users interface spatial and tabular data through CLASIS (web based mapping website) or directly through ESRI’s ArcMap software Users interface spatial and tabular data through CLASIS (web based mapping website) or directly through ESRI’s ArcMap software Technical Specification

Database Management CLD managed by Floodplain Management Branch CLD managed by Floodplain Management Branch Current and previous CLD versions are stored at CDEC Current and previous CLD versions are stored at CDEC Periodic updates being sent to CDEC loading into the master Oracle database Periodic updates being sent to CDEC loading into the master Oracle database Access is maintained through CDEC Access is maintained through CDEC

AccomplishmentsAccomplishments NLD Surveyed Levee Centerlines Included

Using the same data model as NLD and MLI Using the same data model as NLD and MLI Coordinated with FEMA and USACE to data share Coordinated with FEMA and USACE to data share Developed process, procedures & scripts for importing and exporting data between the NLD & CLD Developed process, procedures & scripts for importing and exporting data between the NLD & CLD Created schedule for data exchange between agencies Created schedule for data exchange between agencies Levee Data Model Interagency Design Collaboration AccomplishmentsAccomplishments

Work with DWR Northern District and CVFPP to determine SPFC footprint Work with DWR Northern District and CVFPP to determine SPFC footprint Coordinated USACE to ensure both agencies are in agreement Coordinated USACE to ensure both agencies are in agreement Developed process, procedures & scripts for importing and exporting data between the NLD & CLD Developed process, procedures & scripts for importing and exporting data between the NLD & CLD Submitted changes and recommendations to CVFPP for approval by DWR legal and the Central Valley Flood Protection Board Submitted changes and recommendations to CVFPP for approval by DWR legal and the Central Valley Flood Protection Board State Plan of Flood Control (SPFC) AccomplishmentsAccomplishments

Work with counties/agencies outside the Central Valley Work with counties/agencies outside the Central Valley Collect information on levees and levee-like structures Collect information on levees and levee-like structures Improve data and fill-in blanks in the database Improve data and fill-in blanks in the database Establish relationships with agencies for exchange of data Establish relationships with agencies for exchange of data Improve levee alignment of non-project levees Improve levee alignment of non-project levees Data Collection for Non-Project Levees AccomplishmentsAccomplishments

Integrate data from MLI in to the CLD Integrate data from MLI in to the CLD Adjust/Improve alignments of non-federal levees Adjust/Improve alignments of non-federal levees Integrate data about certification and accreditations Integrate data about certification and accreditations Include information about Provisionally Accredited Levees (PAL) Include information about Provisionally Accredited Levees (PAL) Refine data exchange process to streamline data transfer Refine data exchange process to streamline data transfer Integration of FEMA Midterm Levee Inventory (MLI) AccomplishmentsAccomplishments

California Levee and Stream Information System (CLASIS) AccomplishmentsAccomplishments

Import documents collected for ULE/ NULE programs into the CLD Import documents collected for ULE/ NULE programs into the CLD Link documents to levee segments Link documents to levee segments Allows documents to be searched by levee segment Allows documents to be searched by levee segment Actual documents can be viewed through media table Actual documents can be viewed through media table Integration of NULE Research Documents AccomplishmentsAccomplishments

Active Use of CLD Several Projects are using data from the CLD or data collected in conjunction with the levee database effort: USACE NLD USACE NLD FEMA MLI FEMA MLI DWR Urban levee program (ULE) DWR Urban levee program (ULE) DWR Non-Urban levee program (NULE) DWR Non-Urban levee program (NULE) Central Valley Floodplain Evaluation and Delineation Program (CVFED) Central Valley Floodplain Evaluation and Delineation Program (CVFED) Central Valley Flood Protection Plan (CVFPP) Central Valley Flood Protection Plan (CVFPP) State Plan of Flood Control (SPFC) State Plan of Flood Control (SPFC) Non-project levee data collection outside central valley Non-project levee data collection outside central valley

Proposed Activities Use as an emergency management tool during flood events Use as an emergency management tool during flood events Use as base for levee related document management Use as base for levee related document management Coordinate with FEMA RiskMAP program Coordinate with FEMA RiskMAP program Outreach to other State departments and the public Outreach to other State departments and the public Web mapping application refinement Web mapping application refinement Integrate borehole information from ULE/NULE Integrate borehole information from ULE/NULE Work with USACE Silver Jackets Program Work with USACE Silver Jackets Program Define data sharing policies and finalize agreement Define data sharing policies and finalize agreement