Layer: atlas_prd.SDE.i03_Local_Maintenance_Areas_Flood

View In: Map Viewer

Name: atlas_prd.SDE.i03_Local_Maintenance_Areas_Flood_Protection

Display Field: LMA_Name

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Boundaries of various types of public agencies with responsibilities that include in part or primarily flood control, system maintenance, and improvement. In California, there are a variety of political entites that are granted self-taxation powers under various California codes in order to perform the basic goal of flood management within an area. This dataset compiles many of the various datasets together to provide the information in one location. It also includes districts that are no longer active political/management entities for archival or historical purposes. The primary type of flood agency in California are known as reclamation districts, and so represent the majority of the records in this database. The quality of the boundary accuracy is highly variable, due to a variety of reasons, including the fact that the original legal boundaries are frequently tied to Swamp Land Survey boundaries that themselves are poorly located by modern mapping standards. This set of boundary delineations represents the latest in a series of nearly 20 significant revisions primarily by DWR Delta Levees Program between 2000-2017 to a dataset first produced by Office of Emergency Services during the 1997 floods. The accuracy and completeness of the data are therefore higher in the Delta than elsewhere. The Division of Flood Management then stored the boundaries in their levee geodatabase that feeds the web mapping application known as FERIX. To produce this final dataset, in 2018 the Division of Engineering Geodetic Branch merged the data used by FERIX, along with other datasets used by the Delta Levees Program, and normalized the attribute table.

Copyright Text: California Department of Water Resources

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

Drawing Info:

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HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID

Unique ID Field:

Global ID Field:

Type ID Field:

Fields:

OBJECTID (type: esriFieldTypeOID, alias: OBJECTID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
OrganizationID (type: esriFieldTypeInteger, alias: OrganizationID, SQL Type: sqlTypeOther, nullable: true, editable: true)
LMA_Code (type: esriFieldTypeString, alias: LMA_Code, SQL Type: sqlTypeOther, length: 16, nullable: true, editable: true)
LMA_Name (type: esriFieldTypeString, alias: LMA_Name, SQL Type: sqlTypeOther, length: 75, nullable: true, editable: true)
LMA_Placename (type: esriFieldTypeString, alias: LMA_Placename, SQL Type: sqlTypeOther, length: 75, nullable: true, editable: true)
LMA_Type (type: esriFieldTypeString, alias: LMA_Type, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
LMA_Status (type: esriFieldTypeString, alias: LMA_Status, SQL Type: sqlTypeOther, length: 25, nullable: true, editable: true)
Boundary_source (type: esriFieldTypeString, alias: Boundary_source, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
Date_Data_Applies_To (type: esriFieldTypeDate, alias: Date_Data_Applies_To, SQL Type: sqlTypeOther, length: 8, nullable: true, editable: true)
Date_Last_Modified (type: esriFieldTypeDate, alias: Date_Last_Modified, SQL Type: sqlTypeOther, length: 8, nullable: true, editable: true)
Modified_By (type: esriFieldTypeString, alias: Modified_By, SQL Type: sqlTypeOther, length: 75, nullable: true, editable: true)
comments (type: esriFieldTypeString, alias: comments, SQL Type: sqlTypeOther, length: 200, nullable: true, editable: true)
Shape__Area (type: esriFieldTypeDouble, alias: Shape__Area, SQL Type: sqlTypeDouble, nullable: true, editable: false)
Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Templates:

Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 4/13/2026 6:44:04 PM

Schema Last Edit Date: 4/13/2026 6:44:04 PM

Data Last Edit Date: 4/13/2026 6:44:04 PM

Supported Operations: Query Query Pivot Query Top Features Query Analytic Query Bins Generate Renderer Validate SQL Get Estimates ConvertFormat

Layer: atlas_prd.SDE.i03_Local_Maintenance_Areas_Flood_Protection (ID:4)