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GCS_North_American_1983
Linear Unit: Foot_US (0.304801)
NAD_1983_StatePlane_Georgia_East_FIPS_1001_Feet
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ItemDescription
FGDC CSDGM Metadata
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DFIRM_SAV_100YR_HydraulicModel
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This model layer represents the combined local Engineering Firms drainage studies for each drainage basin for 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 model layer is to provide assistance in identifying specific local areas of problematic drainage resulting from a 100 Year 24 hour storm rain event. 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.
CITY OF SAVANNAH
COS
STORMWATER
100 YEAR FLOOD
100 YEAR FLOOD MODEL
CITY ZONE 'M'
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This model layer represents the combined local Engineering Firms drainage studies for each drainage basin displaying the 100 Year Flood Limits by polygon boundaries. </SPAN></P><P STYLE="margin:1 1 1 0;"><SPAN>This model layer defines the areas that will be subject to development restrictions referenced in the 2018 Field Drainage Prevention Ordinance.</SPAN></P><P><SPAN>This layer is to provide assistance in identifying specific local areas of problematic drainage resulting from a 100 Year 24 hour storm event.</SPAN></P><P><SPAN>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.</SPAN></P><P><SPAN>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.</SPAN></P><P><SPAN>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.</SPAN></P><P><SPAN>THIS LAYER IS EDITED REGULARLY, WITH MONTHLY REPLICATION.</SPAN></P><P><SPAN>AVAILABLE FOR DOWNLOAD ON THE SAGIS OPEN DATA WEBSITE (www.sagis.org).</SPAN></P><P><SPAN /></P><P><SPAN /></P></DIV></DIV></DIV>
CASEY SOUTH BASIN STUDY - PUBLISHED FLOOD MODEL JULY, 2011 - EMC ENGINEERING SERVICES
CASEY NORTH BASIN STUDY - PUBLISHED FLOOD MODEL SEPTEMBER, 2013 - HUSSEY, GAY, BELL & DeYOUNG ENGINEERING SERVICES
BILBO BASIN STUDY - PUBLISHED REVISED FLOOD MODEL APRIL 2021 - HUSSEY, GAY, BELL ENGINEERING SERVICES
PLACENTIA BASIN STUDY - PUBLISHED FLOOD MODEL MAY, 2018 - EMC ENGINEERING SERVICES SPRINGFIELD CANAL BASIN STUDY - PUBLISHED FLOOD MODEL DECEMBER, 2017 - THOMAS & HUTTON ENGINEERING SERVICES
LITTLE OGEECHEE CANAL BASIN STUDY - PUBLISHED FLOOD MODEL FEBRUARY 2025 - THOMAS & HUTTON ENGINEERING SERVICES
OWNER: CITY OF SAVANNAH - STORMWATER DEPARTMENT.
ZACK HOFFMAN - STORMWATER DEPARMENT. DIRECTOR - PH. (912) 650-7855 ext. 1938 zhoffman@savannahga.gov
TOM McDONALD, CFM - PERMITTING / FLOODPLAIN ADMINISTRATOR - PH. (912) 912-651-6530 ext 1895) tmcdonald@SavannahGa.Gov
BARRIE WILKINS - ARCGIS EDITOR FOR THIS LAYER PH. (912) 650-7855 ext. 2859 bwilkins@savannahga.gov
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>FOR THE CITY OF SAVANNAH PUBLIC USE AND SAGIS PUBLIC MAP SERVICES AND INTERNAL MAP SERVICES</SPAN></P><P><SPAN>DISCLAIMER: The City of Savannah neither certifies nor claims that the information shown on the dataset represents the existing site conditions. The information shown on the dataset shall not be used without field verification.</SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
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created_user
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created_date
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last_edited_user
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last_edited_date
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