Name: 100-Year Hydraulic Model

Display Field: DRAINAGE_BASIN

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This model layer represents the combined local Engineering Firms drainage studies for each drainage basin displaying the 100 Year Flood Limits by polygon boundaries. This model layer defines the areas that will be subject to development restrictions referenced in the 2018 Field Drainage Prevention Ordinance.This layer is to provide assistance in identifying specific local areas of problematic drainage resulting from a 100 Year 24 hour storm event.This model layer represents the local hydraulic study (ZONE 'M') of each drainage basin within the City of Savannah. The results of the detail drainage studies take into acount not only the surface runoff calculations, but also the pipe sizes and flow direction of existing underground stormwater conduits including recent CIP Drainage Basin improvement projects that may not have been incorporated into the National DFIRM Flood maps.CITY ZONE 'M' - means an area defined through hydraulic modeling or other standard engineering analysis as described in Article B, Section 8-70 of the Stormwater Field Drainage Prevention Ordinance.A calibrated hydrologic / hydraulic study of each of the drainage basin was performed using the Stormwater program XPSWMM and historic local flooding data to produce each of the 100 Year Flood Plain Limit boundaries.THIS LAYER IS EDITED AS NEEDED WHEN NEW BASIN MODELS BECOME AVAILABLE.AVAILABLE FOR DOWNLOAD ON THE SAGIS OPEN DATA WEBSITE (www.sagis.org).

Service Item Id: c8166651ded6488a9acfba0be787c09a

Copyright Text: BILBO BASIN STUDY - PUBLISHED SEPT. 2013 - HUSSEY, GAY, BELL & DeYOUNG ENGINEERING SERVICES CASEY NORTH BASIN STUDY - PUBLISHED SEPTEMBER, 2013 - HUSSEY, GAY, BELL & DeYOUNG ENGINEERING SERVICES CASEY SOUTH BASIN STUDY - PUBLISHED JULY, 2011 - EMC ENGINEERING SERVICES PLACENTIA BASIN STUDY - PUBLISHED MAY, 2018 - EMC ENGINEERING SERVICES SPRINGFIELD CANAL BASIN STUDY - PUBLISHED DECEMBER, 2017 - THOMAS & HUTTON ENGINEERING SERVICES OWNER: CITY OF SAVANNAH - STORMWATER DEPT. ROGER RAINES - STORMWATER DEPT. DIRECTOR - (PH. 650-7855) rraines@savannahga.gov TOM McDONALD, CFM - PERMITTING / FLOODPLAIN ADMINISTRATOR - (PH. 912-651-6530 ext 1895) tmcdonald@SavannahGa.Gov ZACK HOFFMAN - STORMWATER DEPT. ENGINEERING CIP ADMINISTRATOR (PH. 644-7762) zhoffman@savannahga.gov BARRIE WILKINS - ARCGIS EDITOR FOR THIS LAYER (PH. 650-7855) bwilkins@savannahga.gov

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: 892199.2230492644
YMin: 723625.2964524925
XMax: 1002149.0436496437
YMax: 820194.1057017893
Spatial Reference: 102666  (2239)

Drawing Info:

Renderer:
Simple Renderer:
Symbol:
Style: esriSFSSolid
Color: [232, 190, 255, 255]
Outline:
Style: esriSLSSolid
Color: [132, 0, 168, 255]
Width: 1
Label: N/A
Description: N/A
Transparency: 28
Labeling Info:

Advanced Query Capabilities:

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

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• DRAINAGE_BASIN ( type: esriFieldTypeString, alias: DRAINAGE BASIN, length: 20 )
• VERTICAL_DATUM ( type: esriFieldTypeString, alias: VERTICAL_DATUM, length: 18 )
• ENGINEERING_SOURCE ( type: esriFieldTypeString, alias: ENGINEERING_SOURCE, length: 40 )
• COMMENT ( type: esriFieldTypeString, alias: COMMENT, length: 50 )
• created_user ( type: esriFieldTypeString, alias: created_user, length: 255 )
• created_date ( type: esriFieldTypeDate, alias: created_date, length: 8 )
• last_edited_user ( type: esriFieldTypeString, alias: last_edited_user, length: 255 )
• last_edited_date ( type: esriFieldTypeDate, alias: last_edited_date, length: 8 )
• SHAPE ( type: esriFieldTypeGeometry, alias: SHAPE )
• SHAPE.STArea() ( type: esriFieldTypeDouble, alias: SHAPE.STArea() )
• SHAPE.STLength() ( type: esriFieldTypeDouble, alias: SHAPE.STLength() )

Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

  Iteminfo   Thumbnail   Metadata