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SLIP Studies

Section 380.0937, F.S.

Adaptations

SLIP Map

Use the tools below to view base
map and coastal flooding spatial data.

Required SLIP Study Areas

Area at Risk Due to SLR

SLIP Study Reports

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Coastal Layers

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Welcome

The purpose of the Sea Level Impact Projection (SLIP) Study Tool is to facilitate the conduction of SLIP studies for state-funded construction within the coastal building zone in accordance with Section 161.551, F.S.

Click on the layers to the left to show the data in the map.

Create Report

You have activated the "Create Report" tool. In order to create a new SLIP Study report use the map pane to the right to zoom into your exact project location. Click on the desired project area on the map and the "Create Report" form will pop up. Enter the required information and click "Create Report".

If you would like to cancel the "Create Report" process, click "Cancel Report" on the left side of this page.

Sea Level Rise

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MHHW

Water Level (feet)

Use the vertical slider to simulate water level rise, the resulting inundation footprint, and relative depth.

Low-lying inland areas prone to flood at selected sea level rise scenario

Water levels are relative to local Mean Higher High Water Datum. Areas that are hydrologically connected to the ocean are shown in shades of blue (darker blue = greater depth).

FEMA Flood Hazards

1% Annual Chance Flood Hazard

Regulatory Floodway

Area of Undetermined Flood Hazard

0.2% Annual Chance Flood Hazard

Future Conditions 1% Annual Chance Flood Hazard

Area With Reduced Risk Due to Levee

Effective regulatory flood hazard information is available as Geographic Information Systems (GIS) data in the form of the National Flood Hazard Layer (NFHL). The NFHL provides users with the ability to determine the flood zone, base flood elevation and floodway status for a particular geographic location.

!Please zoom in more to view this layer.

Stillwater Elevations

Select the scenario:

Stillwater elevation grids, in feet (NAVD88), above the ground surface to demonstrate the variability of flood depths in flood-prone areas. The most common stillwater elevation produced is the 1-percent-annual-chance grid, which is the recurrence interval represented on FIRMs.

High Tide Flooding

Annual occurrences of tidal flooding—exceeding local thresholds for minor impacts to infrastructure—have increased 5- to 10-fold since the 1960s in several U.S. coastal cities. The changes in high tide flooding over time are greatest where elevation is lower, local RSL rise is higher, or extreme variability is less.

In a sense, today’s flood will become tomorrow’s high tide, as sea level rise will cause flooding to occur more frequently and last for longer durations of time.

The red layer in the map represents areas currently subject to tidal flooding, often called “recurrent or nuisance flooding.”

NOAA Regional Scenarios

Click a location on the map to see the interpolated regional sea level rise for the selected scenario. Elevations are in NAVD88 (ft).

Wind Zones

The ultimate design wind speed in miles per hour given the selected building risk category.

Building Risk Category I

Building Risk Category II

Building Risk Category III

Building Risk Category IV

Wildlife Index

NFWF (National Fish and Wildlife Foundation)

Description: The National Fish and Wildlife Foundation (NFWF) used the following sources to create a comprehensive database of Aquatic and Terrestrial Indices: Nation Oceanographic and Atmospheric Administration (NOAA) Marine Fisheries Services, Audubon, BirdLife International, and NatureServe. NFWF compiled data from these sources to create an index of priority species and their habitats.

A wildlife index of high value represents watersheds where the most priority species and their habitats are present.

Website: https://resilientcoasts.org/

Terrain

This dataset represents ground elevation.

Click on the map inside the Coastal Building Zone to identify the elevation.

The ground elevation is used to help determine flood risk to new and existing structures. Darker areas represent lower ground elevations which put structures at a higher risk of damage during storm events.

Disclaimer

Florida Department of Environmental Protection makes no warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed,or represents that its use would not infringe privately owned rights.

Create SLIP Study Report

You have activated the "Create SLIP Study Report" tool. To create a report, click on your project location in the map.

The project's location is defined as the centroid of the project location or the location of the lowest known elevation in the project's area.

The project location MUST be within the Coastal Building Zone.

Icons for other SLIP Study reports will not be shown while creating a new report.

Regional SLR Scenarios

You have activated the "Regional SLR Scenarios" tool. To see a regional sea level rise scenario, click a location within the Coastal Building Zone on the map.

The location MUST be within the Coastal Building Zone.

Filter SLIP Study Reports

Sea Level Rise Impact Projection Study Reports

Each icon on the map represents the location of a Sea Level Rise Impact Projection Study report created through this platform. Click on the icons to view details and navigate to the report. The general public will only see reports that have been officially published by the Florida DEP. Signed in users will be able to see their saved an unsubmitted reports on the map.

Legend

Published

Submitted

Not Submitted

Filtering:
To filter the SLIP Study Reports shown on the map, use the filter window to the right of the SLIP Map.

Wildlife Index

Terrain

The latest compilation of terrain data from NOAA. This dataset contains the best publically available terrain data in a 3m resolution. NOAA serves this layer through the image service cited below:

NOAA Terrain Map Service

Wind Zones

The ultimate design wind speed in miles per hour, for the development of wind loads, shall be determined from Figures 1609.3(1), 1609.3(2), 1609.3(3) and 1609.3(4) in the 2020 Florida Building Code. The exact location of wind speed lines shall be established by local ordinance using recognized physical landmarks such as major roads, canals, rivers and lake shores whenever possible.

Link to Figures 1609.3(1), 1609.3(2), 1609.3(3) and 1609.3(4):
https://codes.iccsafe.org/content/FLBC2020P1/chapter-16-structural-design#FLBC2020P1_Ch16_Sec1609.3

Website illustrating Figure 1609.3(3):
https://www.arcgis.com/home/webmap/viewer.html?webmap=6c8665e9c72d49d38033a4f245a9bdd7&extent=-90.2185,24.1483,-77.2931,31.3082

High Tide Flooding

NOAA Regional Scenarios

The five relative sea level rise (RSL) scenarios shown in this tab are derived from NOAA Technical Report NOS CO-OPS 083 “Global and regional sea level rise scenarios for the United States” using the same methods as the USACE Sea Level Rise Calculator. These new scenarios were developed by the Sea Level Rise and Coastal Flood Hazard Scenarios and Tools Interagency Task Force, jointly convened by the U.S. Global Change Research Program (USGCRP) and the National Ocean Council as input to the USGCRP Sustained Assessment process and 4th National Climate Assessment. These RSL scenarios provide a revision to the (Parris et. al, 2012) global scenarios which were developed as input to the 3rd National Climate Assessment.

These RSL scenarios begin in year 2000 and take into account global mean sea level rise (GMSL), regional changes in ocean circulation, changes in Earth’s gravity field due to ice melt redistribution, and local vertical land motion.

Website: https://coast.noaa.gov/slr

Technical Report: https://tidesandcurrents.noaa.gov/publications/techrpt83_Global_and_Regional_SLR_Scenarios_for_the_US_final.pdf

Flood Zones

FEMA National Flood Hazard Layer

Note: Performance and speed of data in this layer are directly dependant on FEMA as the data is generated from a map service running on their website.

Description: Effective regulatory flood hazard information is available as Geographic Information Systems (GIS) data in the form of the National Flood Hazard Layer (NFHL). The NFHL provides users with the ability to determine the flood zone, base flood elevation and floodway status for a particular geographic location. It also has National Flood Insurance Program (NFIP) community information, map panel information, cross section and hydraulic structure information, Coastal Barrier Resource System information (if applicable) and base map information, such as road, stream and public land survey data. The NFHL dataset represents the current effective flood risk data for those parts of the country where maps have been modernized. It is a compilation of effective Flood Insurance Rate Map (FIRM) databases and Letters of Map Revision (LOMR). The NFHL is updated as new data reaches its designated effective date and becomes valid for regulatory use under the NFIP.

Website: https://msc.fema.gov/nfhl

Map Service: https://hazards.fema.gov/arcgis/rest/services/public/NFHL/MapServer

Sea Level Rise

Use the vertical slider to simulate water level rise, the resulting inundation footprint, and relative depth. Click on icons in the map to view sea level rise simulations at specific locations.

Water levels are relative to local Mean Higher High Water Datum. Areas that are hydrologically connected to the ocean are shown in shades of blue (darker blue = greater depth).

Low-lying areas, displayed in green, are hydrologically "unconnected" areas that may also flood. They are determined solely by how well the elevation data captures the area’s drainage characteristics. The mapping may not accurately capture detailed hydrologic/hydraulic features such as canals, ditches, and stormwater infrastructure. A more detailed analysis, may be required to determine the area’s actual susceptibility to flooding.

For more information visit the Sea Level Rise Impacts Viewer (http://coast.noaa.gov/slr).

Website: https://coast.noaa.gov/digitalcoast/tools/slr.html

Map Services:
https://coast.noaa.gov/arcgis/rest/services/dc_slr/conf_0ft/MapServer
https://coast.noaa.gov/arcgis/rest/services/dc_slr/conf_1ft/MapServer
https://coast.noaa.gov/arcgis/rest/services/dc_slr/conf_2ft/MapServer
https://coast.noaa.gov/arcgis/rest/services/dc_slr/conf_3ft/MapServer
https://coast.noaa.gov/arcgis/rest/services/dc_slr/conf_4ft/MapServer
https://coast.noaa.gov/arcgis/rest/services/dc_slr/conf_5ft/MapServer
https://coast.noaa.gov/arcgis/rest/services/dc_slr/conf_6ft/MapServer

Area at Risk Due to Sea Level Rise

Description
This polygon depicts the possible extent of the Area at Risk Due to Sea Level Rise of the state of Florida, based on the Florida Statute s. 380.093(3)(d)3.b. Requirements for activities or construction within the coastal building zone. The Area at Risk Due to Sea Level Rise is defined as any location that is projected to be below the threshold for tidal flooding within the next 50 years by adding sea level rise using the highest of the sea level rise projections required by Florida Statute s. 380.093(3)(d)3.b. For purposes of this paragraph, the threshold for tidal flooding is 2 feet above mean higher high water. This area expands upon the Coastal Building Zone of Florida, defined by Florida Statutes s. 161.54 Definitions and s. 161.55. The criteria used to delineate the boundaries is detailed below:

Area at Risk Due to Sea Level Rise

Regional MHHW grids were extracted from NOAA’s VDatum standalone datum conversion package.
Regional VDatum MHHW grids (rasters) were mosaiced into a statewide MHHW raster.
The VDatum MHHW grid was transormed to use the North American Vertical Datum of 1988 (NAVD88) and units of feet.
Two feet were added to the MHHW NAVD88 raster to account for the FDEP threshold for tidal flooding.
An additional 1.82’ were added to the MHHW NAVD88 raster to account for sea level rise using 20222 NOAA Intermediate sea level rise projections for the 2070 planning horizon.
Create a flood inundation raster by subtracting the elevations on the MHHW raster from topographic elevations.
1. Topographic elevations are provided by the FDEM as part of a 2018 statewide LiDAR project.
Convert flood inundation raster to a vector polygon format.
Clean flood inundation polygon to remove small, isolated inundation polygons that are not hydraulically connected to a tidal flooding source.

Coastal Building Zone
The Coastal Building Zone of Florida was merged with the final dataset to ensure that all original Coastal Building Zone areas were included in the Area at Risk Due to Sea Level Rise dataset.

380.0937 Definitions.
https://m.flsenate.gov/Statutes/380.0937

For issues with this data please contact Jeohusua Lugo at Jeohusua.Lugo@FloridaDEP.gov

Direct Link: Area at Risk Due to Sea Level Rise

Storm Surge Flood Depths

FEMA Flood Risk Report

Description: These datasets provide additional flood frequencies beyond what the 1-percent-annual-chance flood calculates.

Website: http://hazards.fema.gov

Regional SLR Scenarios

If you wish to continue, regional sea level rise scenarios will be calculated for this location by interpolating between the two closest tide gauges.

SLIP Report Filter

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SLIP Reports shown on the map.

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