GIS Coordination on a Statewide Scale using a Common Toolset Application Marshall Flynn IT/GIS...

GIS Coordination on a Statewide Scale usinga 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

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

Tropical Storm System Surge Zone ComponentTropical Storm System Surge Zone Component

Why is This Evacuation Update Such a Good Idea?

• Many Regions Have not Updated Their Evacuation Data for Years

• Processing is 90% automated

• Computers 6X Faster than last time (on average)

• Available Base Data is so Much Better!

Light Detection and Ranging

LiDAR Sea, Lake, Overland Surge from Hurricanes

SLOSH ModelsRegional Evacuation

StudiesAnalysesVulnerabilityBehavioralDemographicsTransportation

Storm Surge Zones

Begun FY 06-07

Complete FY 09-10

Data ProcessingDevelopment for SLOSH

Begun FY 06-07

Complete FY 08-09

Begun FY 06-07

Complete FY 08-09

Contractors Contractors

Natio

nal

Hu

rricane

Cen

ter

RegionalPlanningCouncils

RegionalPlanningCouncils

Begun FY 08-09

Complete FY 09-10

Begun FY 08-09

Complete FY 09-10

SRES Process Components

FY 09-10

• 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 SLOSH?

What is Storm Surge?

NAVD88

STORM SURGESTORM SURGE is the increase in water level due to a storm (hurricane is the increase in water level due to a storm (hurricane /tropical storm / high winds)./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

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

SRES Phase II: Surge Zones & Evacuation Zones

Toolset Has its Origin in ArcView 3.2 Using Avenue (2005)

The New ArcGIS 9.3 Version Uses ArcObjects

From Zone Module

Cat 1

Cat 2

Union Cat plusNext Highest Cat

Cat 1_2Union Cat plus

Next Highest Cat

Cat 3

Cat 1_3

Union Cat plusNext Highest Cat

Cat 4

Cat 1_4

Union Cat plusNext Highest Cat

Cat 5

Cat 1_5

Select and FillCat Field with

AssociatedCat Number

Add Cat Field

Dissolve byCat Singlepart

Apply DefinedSymbol Renderer

Finished Displayed Surge

Creating Surge

Composite Shapefile

SLOSH Display Program Category 4

This is not what the real world is like……

SLOSH grids actually much bigger

• 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

Modeling MOM Values into Realistic Surge

An area with SLOSHMOMs in their default square

basin form. Circled areawould be devoid of surge if

not interpolated.

You can see how theinterpolation hugs the

terrain as in real life. Thatis what you are looking for.

Surge Model Inundation Category 4 (1 – 4)

• 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

These Are Needed:These Are Needed:

How Do We Get There?

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:

• 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

QA/QC and Regional Surge Clean-up

DS MapBooks Was Used For Atlas Compilation

Page Detail:

Surge Zones Are Used For Evacuation Zone Choices

How a County May Delineate the Evacuation ZonesHow 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