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Description: Dam Inundation areas for dams in or near Santa Rosa.Fountaingrove Lake - no study infoMatanzas Reservoir - no study infoLake Ralphine: General depiction of Inundation Area for Lake Ralphine Dam in Santa Rosa, CA near Summerfield Road in Howarth Park. Digitized from "Inundation Map of Lake Ralphine Dam", City of Santa Rosa, 1974. City File 1974-0134. Image file: 1974-0134_001C.JPGAnnadel No. 1 (Lake Ilsanjo) - Inundation Map for Sunny Day Breach, Annadel Number 1 1-070 Dam, Dam Number: 1-070, National Dam ID: CA00056. March 2018. Dam owner: California Department of Parks and Recreation https://fmds.water.ca.gov/maps/damim/service/document/download/1224

Copyright Text: "Inundation Depth Map for Sunny Day Breach, Annadel Number 1 1-070 Dam", Dam Number: 1-070, National Dam ID: CA00056. March 2018. "Inundation Map of Lake Ralphine Dam", City of Santa Rosa, 1974., Dam Name: 1.070-Annadel No 1 National Dam ID (NID) = CA00056 ++++++++++ Scenario 1 ++++++++++ Scenario Description: This scenario shows an inundation extent for a sunny day failure of Main Dam. Disclaimer ********************************************************************************************************************************************************************************************* As required by California Water Code section 6161, the Department of Water Resources (DWR), Division of Safety of Dams (DSOD) reviews and approves inundation maps prepared by licensed civil engineers and submitted by dam owners for extremely high, high, and significant hazard dams and their critical appurtenant structures. Inundation maps are not required by the California Water Code for the low hazard dams. Inundation maps are based on a hypothetical failure of a dam or critical appurtenant structure and the information depicted on the maps is approximate. Areas to be evacuated in the event of an actual failure of a dam or critical appurtenant structure are determined by emergency managers. The inundation boundary of the DSOD approved maps can be viewed from the link on the DSOD website. In addition, the website also includes pdf and geospatial files (if available). The inundation boundary typically includes flooding depths greater than one foot, and some information on the maps may be redacted for security purposes. Minor changes to submitted geospatial files may have been made for the purpose of posting on the website. Please note that inundation maps for the dams owned by Federal government are not available. Inundation maps approved by DSOD are used to develop emergency action plans, and the maps are intended to provide general information for emergency planning and response. DWR assumes no legal responsibility resulting from the use of this information. Actual evacuation zones and timing will be determined by local emergency managers who are responsible for specific evacuation procedures in an emergency event. Inundation maps will continue to be posted as they have been reviewed and approved by DSOD. Water Code section 6161(e) requires that inundation maps be updated every ten years or sooner. Updated inundation maps will replace outdated maps as they are approved by DSOD. If you have any question, please contact mapregs@water.ca.gov ********************************************************************************************************************************************************************************************* This file was generated on: 11/5/2018

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