GIS Coordination on a Statewide Scale using a

GIS Coordination on a Statewide Scale using a Common Toolset Application Marshall Flynn IT/GIS Manager Tampa Bay Regional Planning Council Pinellas Park, FL

Florida Statewide Regional Evacuation Study Update Program • • GIS Technology Drives the Data & the Analysis Each Region on its Own in the Past First Statewide Comprehensive Effort Like This Ever Product is for State of Florida with Regions as Sections Compatibility, Structure, and Formatting are Key Elements All ESRI 9. 3+ with Spatial Analyst Common Map Templates Common Symbology

Tropical Storm System Surge Zone Component Evacuation Zones are the Product Used Most and Seen Most by the Public, and Used for Evacuation Transportation Modeling Component • • • Surge Zones are used as a basis to delineate those Evacuation Zones Consistent Methodology and Data Essential (11 Regions = 1 State) State Chose NHC SLOSH Model for Surge Inundation SRES Program uses SIM* for Post-Processing Surge Zone Creation Evacuation Zones Then Derived From Surge Zones by County EM Dept. * Surge Inundation Model

Why is This Evacuation Update Such a Good Idea? • • Many Regions Have not Updated Their Evacuation Data for Years Processing is 90% automated Computers 6 X Faster than last time (on average) Available Base Data is so Much Better!

SRES Process Components Begun FY 06 -07 Complete FY 08 -09 Contractors Light Detection and Ranging Li. DAR Data Processing Development for SLOSH Sea, Lake, Overland Surge from Hurricanes SLOSH Models m Regional Evacuation Studies 9 8 -0 0 0 FY 09 -1 un eg te FY B ple om Storm Surge C Regional Planning Councils FY 09 -10 National Hurricane Center 7 -0 0 06 9 -1 FY Y 0 n F gu ete pl Be Co Analyses Vulnerability Behavioral Demographics Transportation Begun FY 08 -09 Complete FY 09 -10 Zones

What is SLOSH? • Sea, Lake, and Overland Surge from Hurricanes • A computerized model developed by the National Weather Service (NWS) to estimate storm surge heights and winds resulting from historical, hypothetical, or predicted hurricanes.

What is Storm Surge? NAVD 88 STORM SURGE is the increase in water level due to a storm (hurricane /tropical storm / high winds).

LAS Points From LIDAR (Bare Earth)

Converted to DEM (Larger Cell Size)

Contractor Processing for SLOSH Input at NHC

Previous SLOSH Basin (1991)

2009 SLOSH Basin

SRES Phase II: Surge Zones & Evacuation Zones Creating Surge Zones • Data needs to be processed fairly fast • Results should be relatively consistent • Some RPCs have not done surge models • Developed and proven methodology • Fairly easy to use

Toolset Has its Origin in Arc. View 3. 2 Using Avenue (2005)

The New Arc. GIS 9. 3 Version Uses Arc. Objects

SLOSH Display Program Category 4

This is not what the real world is like…… SLOSH grids actually much bigger

Modeling MOM Values into Realistic Surge • The previous slide demonstrates the surge heights (which are based on average elevation per grid) in MOM basin with square edges • We know that water does not behave like this • How do we get a realistic depiction of surge height with respect to the real terrain underneath? – Interpolation of grid heights – Creates a smooth surface for further topographical processing • The results allow a realistic depiction of inundation of terrain

An area with SLOSH MOMs in their default square basin form. Circled area would be devoid of surge if not interpolated.

You can see how the interpolation hugs the terrain as in real life. That is what you are looking for.

Surge Model Inundation Category 4 (1 – 4)

How Do We Get There? These Are Needed: • Surge Model Toolset for GIS Processing • Updated High Resolution Elevation Data • Updated SLOSH Maximum of Maximum Data • Aerial Imagery (QA Checks for Data) • Water Feature Data for Surge Origination

Shows the relief detail of Digital Elevation, if shaded and shadowed…

LIDAR Derived Shoreline With NHD High Res

Why Water features are needed………. .

Imagery Supports Water Flow Under Bridges, etc.

Water Polygons Allow Contiguous Selection Beyond

Contiguous Inundation No Longer Stopped

The Result From a Surge Model Run:

QA/QC and Regional Surge Clean-up • Surge zone shapefiles from adjoining areas are merged to county level (if needed) • They are inspected for smooth transition and anomalies are corrected • Then they are inspected and edited to foster a smooth transition within the region • The files are used for Storm Tide Atlas and creating preliminary evacuation zones

DS Map. Books Was Used For Atlas Compilation

Page Detail:

Surge Zones Are Used For Evacuation Zone Choices How a County May Delineate the Evacuation Zones

Evac Zone Boundaries Brought Out to Road and Parcel Boundaries These would be removed

Thanks, and Have a Great Day! SRES Program 2007 -2010 Florida