View In:   ArcGIS Online Map Viewer

Name: Dam Inundation Areas

Display Field: damname

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This polygon dataset shows the extent of dam inundation areas for extremely high, high and significant hazard dams and their critical appurtenant structures located in San Diego County. These are inundation boundaries of the DSOD approved maps only. The dataset does not include low hazard dams. Inundation maps are based on a hypothetical failure of a dam or critical appurtenant structure and the extent of the inundation areas is approximate. The dataset excludes a number of high risk dams for which dam inundation areas were not available. </SPAN></P><P><SPAN>The DSOD dam inundation dataset was downloaded from https://fmds.water.ca.gov/webgis/?appid=dam_prototype_v2 and dam inundation areas that intersect San Diego County were extracted. Additional data fields were added by SanGIS (NationalDamID, DamDSOD_ID, DamNameCarto and DownloadDate).</SPAN></P><P><SPAN>Under new legislation dam owners are required to submit updated dam plans to the State Division of Safety of Dams and these will need to be updated on a 10 year basis. This dataset contains dam inundation boundaries for 39 dams. The DSOD webmap included 17 other dams in San Diego County where dam iundation maps were not available. High risk dams without inundation maps were as follows: Eastlake and Santa Fe Seasonal Storage. Low risk dams without inundation maps are Wuest, Henry Jr, Corte Madera, Lake Cuyamaca, Upper Otay, Bonita Long Canyon, Agua Tibia and Upper 4S Ranch.</SPAN></P><P><SPAN>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.</SPAN></P><P><SPAN>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 DSOD website. Please note that inundation maps for the dams owned by Federal government are not available.</SPAN></P><P><SPAN>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.</SPAN></P><P><SPAN>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.</SPAN></P><P><SPAN>The State of California and the Department of Water Resources' Division Safety of Dams (DSOD) are strongly committed to providing accessible information to all persons. If website information is not accessible to you, due to a disability, please contact DSOD in writing or by telephone and we will work with you to make that information available. Direct your request to: Email: mapregs@water.ca.gov or Phone: (916) 565-7800.</SPAN></P><P><SPAN>If you have any question please contact mapregs@water.ca.gov.</SPAN></P></DIV></DIV></DIV>

Service Item Id: 7f4eb049c90b4a7ba70805c869bc9a77

Copyright Text: State of California and the Department of Water Resources' Division Safety of Dams (DSOD), SanGIS

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports ValidateSQL: true

Supports Calculate: true

Extent:

XMin: 6203924.999835089
YMin: 1759754.6238483936
XMax: 6470265.133164242
YMax: 2134189.9999761432
Spatial Reference: 102646  (2230)

Drawing Info:

Renderer:
Simple Renderer:
Symbol:
Style: esriSFSSolid
Color: [191, 217, 242, 255]
Outline:
N/A
Label: N/A
Description: N/A
Transparency: 0
Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: false
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: true
Supports Returning Geometry Centroid: false
Supports Binning LOD: true
Supports Query With LOD Spatial Reference: true

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field:

Fields:

• objectid ( modelName: OBJECTID, nullable: false, defaultValue: null, editable: false, alias: OBJECTID, type: esriFieldTypeOID )
• damname ( modelName: DamName, nullable: true, editable: true, defaultValue: null, length: 250, alias: DamName, type: esriFieldTypeString )
• structure ( modelName: Structure, nullable: true, editable: true, defaultValue: null, length: 100, alias: Structure, type: esriFieldTypeString )
• scenario ( modelName: Scenario, nullable: true, editable: true, defaultValue: null, length: 100, alias: Scenario, type: esriFieldTypeString )
• pubdate ( modelName: pubDate, nullable: true, editable: true, defaultValue: null, length: 50, alias: pubDate, type: esriFieldTypeString )
• nationaldamid ( modelName: NationalDamID, nullable: true, editable: true, defaultValue: null, length: 20, alias: NationalDamID, type: esriFieldTypeString )
• damowner ( modelName: DamOwner, nullable: true, editable: true, defaultValue: null, length: 50, alias: DamOwner, type: esriFieldTypeString )
• downstreamhazard ( modelName: DownstreamHazard, nullable: true, editable: true, defaultValue: null, length: 50, alias: DownstreamHazard, type: esriFieldTypeString )
• damdsod_id ( modelName: DamDSOD_ID, nullable: true, editable: true, defaultValue: null, length: 20, alias: DamDSOD_ID, type: esriFieldTypeString )
• damnamecarto ( modelName: DamNameCarto, nullable: true, editable: true, defaultValue: null, length: 50, alias: DamNameCarto, type: esriFieldTypeString )
• downloaddate ( modelName: DownloadDate, nullable: true, editable: true, defaultValue: null, length: 8, alias: DownloadDate, type: esriFieldTypeString )
• SHAPE__Length ( virtual: true, nullable: true, editable: false, defaultValue: null, alias: SHAPE__Length, type: esriFieldTypeDouble )
• SHAPE__Area ( virtual: true, nullable: true, editable: false, defaultValue: null, alias: SHAPE__Area, type: esriFieldTypeDouble )

Templates:

• Name: Dam Inundation Areas
  Description:
  Prototype:
  downstreamhazard: null
  damname: null
  damdsod_id: null
  downloaddate: null
  scenario: null
  damowner: null
  damnamecarto: null
  nationaldamid: null
  structure: null
  pubdate: null
  
  Drawing Tool: esriFeatureEditToolPolygon

Capabilities: Query

Sync Can Return Changes: true

Is Data Versioned: false

Supports Rollback On Failure: true

Supports ApplyEdits With Global Ids: false

Supports ApplyEdits By Upload Id: true

Supports Query With Historic Moment: false

Supports Coordinates Quantization: true

Supported Operations:   Query   Query Attachments   Calculate   Validate SQL   Generate Renderer   Return Updates   Metadata