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Layer: High Groundwater Hazard Area (ID:0)

View In:   Map Viewer

Name: High Groundwater Hazard Area

Display Field: EDITOR_NAME

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Last Updated on 9/7/2021 by SLS.The purpose of this data is to provide planners with a history of flooding events recorded in the county. This information is compiled using authoritative data and represents the approximate mapped location of documented high groundwater flooding events for the purposes of screening. Authoritative data includes, but is not limited to, the 1997 WA State DOT infrared aerial photography. Beginning in 2016 updates to this layer began, and are in progress, to eliminate shadowing and map high groundwater using digital versions of the 1997 Aerial Photography (not available when the layer was first created) and LiDAR Contour data. All edits are verified by the County Hydrogeologist and Flood Plain Manager before being incorporated into the data. Edits are made on a case-by-case basis as time allows and when discrepancies are found and researched. For information about changes or making a change please contact Tim Rubert, Flood Plain Manager, with Thurston County. High ground water hazard areas as defined in the Thurston County Critical Areas Ordinance Chapter 24.20, adopted on July 24, 2012 Or No 14773. 24.20.015 High ground water flood hazard areas – Base flood elevation. The base flood elevation (BFE) for high ground water flood hazard areas corresponds to the elevation of the outer edge of the high ground water flood hazard area. The map entitled “High Ground Water Flood Hazard Areas,” depicts the approximate location of the high groundwater flood hazard area. The actual location of the outer edge of the flood hazard area shall be determined consistent with TCC 24.20.030 and 24.20.035, as applicable.

Copyright Text: Thurston County Community Planning and Economic Development (CPED)

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 1000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

Drawing Info:

HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID

Unique ID Field:

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Type ID Field:

Fields:
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Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 2/22/2023 8:33:23 PM

Schema Last Edit Date: 2/22/2023 8:33:23 PM

Data Last Edit Date: 2/22/2023 8:33:23 PM

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