Tools Comparison Matrix - Louisiana
Why Use This? This matrix was created to provide the planning and coastal management communities with an expandable chart to compare the functions and methods of publicly available sea level rise and coastal flood web tools. The information in each column is provided by the web tool owner. Specific questions about the tools can be addressed to the tool owner through the contact information provided in their matrix column. For more information or to suggest additional web tools, visit the national matrix page.
Suggested Citation: The Sea Level Rise and Coastal Flood Web Tools Comparison Matrix. The Nature Conservancy, NOAA's Office for Coastal Management, Climate Central. URL, Date Access:
Tool | EMBED | Climate Central Surging Seas Risk Finder |
NOAA's Office for Coastal Management Sea Level Rise and Coastal Flooding Impacts Viewer |
The Nature Conservancy Coastal Resilience |
NOAA's Office for Coastal Management Coastal Flood Exposure Mapper |
Coastal Protection and Restoration Authority Flood Risk and Resilience Viewer |
|
---|---|---|---|---|---|---|---|
Tool | Surging Seas Risk Finder Climate Central |
Sea Level Rise and Coastal Flooding Impacts Viewer NOAA's Office for Coastal Management |
Coastal Resilience The Nature Conservancy |
Coastal Flood Exposure Mapper NOAA's Office for Coastal Management |
Flood Risk and Resilience Viewer Coastal Protection and Restoration Authority |
||
10 | GENERAL | Geographic Scope![]() |
Available for the entire contiguous coastal U.S. -- 22 states and Washington, D.C. -- with releases planned for HI and AK in the future. | National (with the exception of AK) | Expanding and now includes 14 U.S. coastal states (AL, CA, CT, FL, HI, LA, ME, MS, NJ, NY, NC, TX, VA, WA), the Caribbean (Grenada, St. Vincent and the Grenadines, U.S. Virgin Islands), and across Mexico and Central America (Belize, Guatemala, Honduras). Also global and U.S. national web maps together form the Coastal Resilience network. | Coastal areas along Gulf of Mexico & East Coast | Coastal Louisiana |
10 | GENERAL | Link![]() |
riskfinder.climatecentral.org | coast.noaa.gov/digitalcoast/tools/slr, coast.noaa.gov/slrdata/ | maps.coastalresilience.org | http://www.coast.noaa.gov/floodexposure | cims.coastal.louisiana.gov/floodrisk/ |
10 | GENERAL | Description![]() |
Searchable web tool providing 1) maps users can customize, embed, & download; 2) downloads: spreadsheets, slideshow-ready tables & graphs, & fact sheets; 3) individual community analyses; 4) area comparisons; 5) local sea level & flood risk projections. 100+ demographic, economic & infrastructure variables analyzed for 1000s of communities from zip code to statewide levels. | Tool allows users to visualize community-level impacts from coastal flooding or sea level rise and provides easy access to inundation and elevation data via NOAA's Digital Coast. | An online mapping tool customized for local and state decision makers showing potential impacts from sea level rise and coastal hazards designed to help communities develop and implement solutions that incorporate ecosystem-based adaptation approaches | A mapping viewer designed to help coastal communities start discussions about coastal flood hazard impacts with maps that show people, places, and natural resources exposed to coastal flooding. | Viewer highlights the state’s best available data for future coastal land loss, flood risk, and estimated economic damages. Shows Louisiana's 2012 Coastal Master Plan projects and provides other resources to reduce flood risk. |
10 | GENERAL | Target Audience![]() |
Decision makers, planners, coastal managers, emergency managers, federal and state agencies, journalists and the general public | Decision makers, planners, coastal managers, floodplain managers, emergency managers, coastal scientists and engineers, general public | Decision makers, planners, coastal managers, emergency managers, coastal scientists and engineers | Decision makers, planners, coastal managers, floodplain managers, emergency managers, general public | Louisiana residents, local planners, floodplain managers, emergency managers, community advocates, and officials. |
10 | GENERAL | Skill Level![]() |
Low | Low to Medium | Low-Medium | Low | Low |
10 | GENERAL | Main Tool Outputs![]() |
Maps, community analyses, wide area analysis comparisons, projections, downloads & reports | Maps, sea level rise scenarios, photo simulations, flood frequency graphs | Maps (on-screen and pdf), Summary reports (on-screen), Bookmark links, Downloadable spatial data | Maps | Maps, future scenarios of land change, flood depths, economic damages, community assets, impacts to communities, socio-economics, and links to resources. |
10 | GENERAL | Year Released![]() |
RRolling release starting Fall 2013 | 2011 Gulf of Mexico / 2012 US West and Mid-Atlantic Coasts / 2013 US NW, SW and Pacific Islands / 2014 Puerto Rico, USVI, NE / 2015 Louisianna | 2013 | 2015 | 2016 |
10 | GENERAL | Date Column Last Updated | July 2016 | April 2017 | October 2014 | October 2015 | April 2016 |
10 | GENERAL | Top Three Strengths![]() |
1) Comprehensive tool providing exposure analysis, comparisons, and projections, as well as an interactive map. 2) Analyses cover ~100 variables, and conducted for 1000's of individual areas (zips, cities, counties, states, planning and legislative districts at all levels). 3) Local projections combine sea level rise and storm surge to give integrated risk estimates by decade. | 1) Easy to use via Web browser, with GIS analysis results and map services available; 2) Uses consistent data sets and analysis for coastal areas nation-wide; 3) Includes photos and allows users to customize local scenarios and visualize impacts of sea level rise at known locations. | 1) DESIGN: The tool has a modular, plugin architecture: Coastal Resilience “apps” can be developed by anyone and plugged into the web-based mapping platform. This allows developers to design a specific application to highlight a coastal management issue, respond to a disaster for post-storm decision making, or emphasize nature-based alternatives; 2) PERFORMANCE: Coastal Resilience 2.0 runs faster; operates on tablets; works nationally and globally; ... is open source, and it’s easy to share results and data; 3) PARTNERSHIPS: Developed among core partners including The Nature Conservancy, University of Southern Mississippi, The Natural Capital Project, NOAA Coastal Services Center, and the Association of State Floodplain Managers | 1) Allows users to select a location and explore maps that show people, places, and natural resources exposed to coastal flood hazards; 2) Creates a collection of maps to download or share online to communicate flood exposure; 3) Provides guidance for using the maps to engage community members and stakeholders in conversations about potential coastal flood impacts | 1) Easy to use and developed specifically for Louisiana residents and local planners/officials; 2) Highlights state's best information about future land loss and flood risk; 3) Allows users to see benefits of Coastal Master Plan protection and restoration projects, and to track projects from planning to construction. |
10 | GENERAL | Top Three Limitations![]() |
1) Map should not be used for site-specific decisions (supplement with direct field measurements of elevation), as wider-area analyses are more robust than point-by-point mapping; 2) Levee data are incomplete, and maps/analyses incorporating levees assume condition good and heights infinite - view full levee and elevation data methods for Louisiana; 3) No physical modeling of storm surge or waves on top of sea level rise. | 1) Inundation scenarios do not include coastal storm surge, riverine flooding, erosion or other coastal processes; 2) Appropriate for use as a screening-level or planning tool allowing zoom in scale of approximately 1:18,055, but provides map services and data download for more in depth analysis. 3.) Includes fully enclosed federal levees as mapped by the USACE National Levee Database. Partially enclosed, regional, or local levees have been added in certain locations. | 1) ONLINE-ONLY: No ability to access the tools with limited or lack of connectivity; 2) USER-FRIENDLINESS: Not catered to general public, so training is requirement to engage stakeholders so they can fully utilize the tool and understand the data and analyses; 3) COMMUNICATIONS: With so many tools now available on the web, it is hard to decipher the niche and therefore use of this tool relative to others that address similar issues | 1) Cannot customize outputs or load additional local inputs directly into the tool; 2) Appropriate for use as a screening-level or planning tool allowing zoom in scale of approximately 1:18,055; 3) Changes or updates to source datasets will not be reflected in the tool until the next data update is completed | 1) Data is appropriate for broad screening-level/ statewide analysis and not for site-specific decision making; 2) Flood risk pertains to coastal storm surge and not rain event or riverine flooding; 3) Cannot display eustatic sea level rise information out directly (though it is included in land loss and flood risk aggregately). |
10 | GENERAL | Point of Contact![]() |
Dan Rizza: drizza@climatecentral.org | Marian Hanisko: marian.hanisko@noaa.gov | Zach Ferdana: zferdana@tnc.org | Russell Jackson: russell.jackson@noaa.gov | Master Plan Team: masterplan@la.gov |
20 | SLR AND FLOOD SCENARIOS | Base Sea Level Elevation![]() |
Mean Higher High Water (MHHW) | Mean Higher High Water (MHHW) | Total Water Levels - Wave run-up + tides | Mean Higher High Water (MHHW) | NAVD88 |
20 | SLR AND FLOOD SCENARIOS | Flood/Inundation Controls![]() |
Slider bar with inundation delineated in 1 foot increments from 1 - 10 feet. Toggle button to the right of the slider to view inundation risk from sea level rise, tides, storms, and tsunamis in meters: 0.5, 1, 1.5, 2, 2.5, 3, 5, 10, 20 & 30. | Slider bar with inundation delineated in 1 foot increments from 0 - 6 feet. Scenarios Tab includes ability to view SLR scenarios by scenario or by year and compare to inunation layers to view impacts. | Choice of Current, 2030, 2060, & 2100 projections with choice of Low, Medium & High Sea Level Rise Projection Scenarios for each time horizon and a combination of 3 potential wave climate changes (no change, 500 year wave event, or a doubling of El Nino frequency) | Users selects individual coastal flood hazards or composite flood hazards. | Slider bar with flood depths delineated in 3 foot increments from 1 - 16+ feet |
20 | SLR AND FLOOD SCENARIOS | Flood Layers Represented![]() |
Blue - inundation; Hatched - low-lying but isolated | Blue gradient - inundation depth; Green - low-lying areas | Tidal inundation, wave impact, flood inundation, river flood inundation | FEMA flood Zones (1%, 0.2%, V-Zones), Category 3 hurricane storm surge zones (SLOSH MOMs), sea level rise inundation (from NOAA Sea Level Rise and Coastal Flooding Impacts Viewer), shallow coastal flooding (from NOAA Sea Level Rise and Coastal Flooding Impacts Viewer), coastal flood hazard composite | Orange-yellow-green-blue (low-high flood depths) |
20 | SLR AND FLOOD SCENARIOS | Uncertainty Represented![]() |
No for elevation, yes for projections | Yes | In future version, analysis completed; layers currently under development | No | Yes |
20 | SLR AND FLOOD SCENARIOS | Way Uncertainty Represented![]() |
Map does not represent uncertainty in elevation values. However, projection tool presents different sea level rise models and scenarios, and reflects uncertainty information as available for these. | Confidence is noted as High vs. Low, so the areas not highlighted as high or low indicate a high confidence of not being inundated: " . . . the blue areas denote locations that may be correctly mapped as "inundated" more than 8 out of 10 times. Areas with low confidence represent location that may be mapped correctly (either as inundated or dry) less than 8 out of 10 times." | see above | Inundation levels are available for two environmental scenarios (Moderate and Less Optimistic) which represent a range of uncertainty in future environmental conditions of sea level rise, subsidence, hurricane frequency and intensity, and other factors. | |
20 | SLR AND FLOOD SCENARIOS | Projects local sea level rise![]() |
Yes | Yes, Scenario and Marsh tabs provide local relative SLR scenarios | Yes | No | Yes, includes Gulf Coast region specific sea level rise and locally specific subsidence rates. |
20 | SLR AND FLOOD SCENARIOS | Projects future flood elevations![]() |
Yes | No | Yes | No | Yes, for 50, 100, and 500-year coastal storm surge events. |
20 | SLR AND FLOOD SCENARIOS | Projects future flood risk at fixed
elevations![]() |
Yes | No | Yes | No | Yes, includes flood depth differences between future with and without the Coastal Master Plan. |
20 | SLR AND FLOOD SCENARIOS | Projection time periods assessed![]() |
each decade 2020-2100 | Yes out to 2100 | Current, 2030, 2060, 2100 | No | Land loss- Year 0, 10, 20, 30, 40, and 50; flood depths- Year 0, 25, and 50. |
20 | SLR AND FLOOD SCENARIOS | Flood projections factor in changing
frequency or intensity of storms![]() |
No | No | Yes | No | Yes, changing frequency and intensity of storms. |
20 | SLR AND FLOOD SCENARIOS | Allows choice of projection
scenarios/models![]() |
Yes | No | Yes | No | Yes, allows choice of Coastal Master Plan scenarios- Moderate and Less Optimistic. |
20 | SLR AND FLOOD SCENARIOS | Shows levees![]() |
Yes. View full levee and elevation data methods for Louisiana | Yes - Links to USACE NLD | Yes | No | Yes, shows existing federal and local levees as well as the 2012 Coastal Master Plan's proposed structural protection projects. |
20 | SLR AND FLOOD SCENARIOS | Factors in levees![]() |
Yes, from Coastal Protection and Restoration Authority (CPRA), FEMA mid-term levee inventory, or captured in LIDAR. View full levee and elevation data methods for Louisiana | Levees are displayed as yellow lines, and enclosed leveed areas are displayed as a white stippled pattern. Major federal leveed areas were assumed high enough and strong enough to protect against inundation depicted in this viewer, and therefore no inundation was mapped in these regions. Minor (nonfederal) leveed areas were mapped using the best available elevation data that capture leveed features. In some cases, however, breaks in elevation occur along leveed areas because of flood control features being removed from elevation data, limitations of the horizontal and vertical resolution of the elevation data, the occurrence of levee drainage features, and so forth. Flooding behind levees is only depicted if breaks in elevation data occur or if the levee elevations are overtopped by the water surface. At some flood levels, alternate pathways around—not through—levees, walls, dams, and flood gates may exist that allow water to flow into areas protected at lower levels. In general, imperfect levee and elevation data make assessing protection difficult, and small data errors can have large consequences. | Yes | Yes, using FEMA base flood elevations. | Yes, probability of future levee failure (overtopping / breaching) is included in fragility scenarios in order to determine flood depths of enclosed and partially enclosed areas. Proposed 2012 Coastal Master Plan structural protection systems are also included reduce future damages. |
20 | SLR AND FLOOD SCENARIOS | Inundation Model Used![]() |
Modified bathtub approach, modeling hydrologic connectivity and locally adjusted Mean Higher High Water levels. | Modified bathtub approach, modeling hydraulic connectivity and locally adjusted Mean Higher High Water levels. | HEC-GeoRAS tool in ArcGIS outputs for river flooding , FEMA overtopping model used results projected against topographic surface composite | The various coastal flood hazard layers displayed are derived from different modeling methods. Refer to layer source information. | The Advanced CIRCulation (ADCIRC) and Unstructured Simulating WAves Near‐shore (UnSWAN) models are used to compute storm surge and nearshore waves, respectively, throughout the Louisiana coastal area. The models are coupled with wind fields generated by the Planetary Boundary Layer (PBL) model to systematically produce storm surge and wave output that can be understood and analyzed statistically to inform risk and damage assessments. The model can simulate a variety of water circulation conditions, including tides, storm surges, relative sea level rise, and other hydrodynamic phenomena. |
30 | EXPOSURE ANALYSIS | Tabulates exposure within designated areas![]() |
Yes | no just overlay visualization of social and economic data | Can be queried using existing GIS tools | No | Yes, tool displays estimated economic damages to community assets (value of direct damage and repair/replacement costs) within census block areas (2000 U.S. Census). Community assets include: residential structures (single family homes, multi-family homes, and manufactured homes); businesses & commercial structures; public facilities; industrial structures; agricultural crops and structures; roads, railroads, bridges; and vehicles. Damages also include other direct economic impacts such as cost of evacuation, loss of sales, loss of income, and temporary relocation costs. |
30 | EXPOSURE ANALYSIS | Exposure types tabulated![]() |
>100 demographic, economic, environmental and infrastructure variables | No | No | No | Yes, tool displays impacts on communities by count/type per census block including: 1) Community facilities- education, public health, emergency services, public venues, and key commercial facilities; 2) Infrastructure- energy, transportation, and water infrastructure; 3) Transportation- highways and roadways; and 4) Repetitive loss- repetitive loss and severe repetitive loss properties. |
30 | EXPOSURE ANALYSIS | Designated areas for tabulation![]() |
zip codes, cities, counties, states, local through federal legislative districts, planning districts, state agency districts | No | User defined | No | Census blocks (2000 U.S. Census) |
30 | EXPOSURE ANALYSIS | Shows or lists individual exposed facilities or public infrastructure![]() |
Lists all facilities analyzed in tables for download. Shows select facilities and infrastructure on map. | No | Different data layers can be viewed with hazards to determine individual exposed facilities or public infrastrucuture | Yes, through visualization overlays | No |
30 | EXPOSURE ANALYSIS | Compares exposure across designated areas![]() |
Yes | No | No | No | Yes, compares estimated economic damages across census blocks |
40 | SHORELINE PROCESSES | Other Flooding Scenarios Modeled![]() |
Fully integrated analysis of SLR projections with flood risk | Shallow (Nuisance) Coastal Flood Frequency | Wave impact and river flood inundation | see all flood datasets listed above | N/A |
40 | SHORELINE PROCESSES | Coastal Erosion![]() |
No | No | Yes - acceleration of coastal erosion | No | Yes, flood depths account for coastal erosion and future land loss. |
40 | SHORELINE PROCESSES | Sediment Dynamics/Deposition![]() |
No | No | Yes - indirect accounting of coastal sediment budget, sediment yield from watersheds calcuated | No | Yes, both organic matter and inorganic sediments affect wetland vertical accretion and surface elevation. |
40 | SHORELINE PROCESSES | Storm Events![]() |
Fully integrated analysis of SLR projections with flood risk | No | Yes - wave impact, flood inundation and river flood inundation (large storm) | No | Yes, the environmental scenarios take into account future storm events (including changing frequency/intensity). |
40 | SHORELINE PROCESSES | Habitat/Species Change![]() |
No | No | No | No | No |
40 | SHORELINE PROCESSES | Marsh Migration![]() |
No | Yes | Future scenarios analyzed using SLAMM for tidal influenced wetlands | No | No |
50 | TECHNICAL SPECIFICATIONS | Basemap Options![]() |
Satellite, Streets | Satellite, Open Streetmap, Dark | Topographic, National Geographic, Ocean, Imagery, Physical, Shaded Relief, Streets, Terrain | Satellite, grey canvas | Satellite imagery, terrain, streets |
50 | TECHNICAL SPECIFICATIONS | Main elevation data source![]() |
USGS Northern Gulf of Mexico Topobathy DEM, USACE / Louisiana Oil Spill Coordinator’s Office, USGS National Elevation Dataset. View full levee and elevation data methods for Louisiana | Lidar | Lidar | Lidar | |
50 | TECHNICAL SPECIFICATIONS | Main elevation data source vertical
accuracy![]() |
Uses Coastal National Elevation Database (CoNED) Project – Topobathymetric Digital Elevation Model which has various elevation data sources that vary in vertical accuracy. For more information see https://lta.cr.usgs.gov/coned_tbdem. As new elevation data become available, or as stakeholders provide additional levee information, the NOAA Office for Coastal Management will periodically update the inundation and levee data. | NOAA/USGS specs 9.25cm RMSE | Varied | ||
50 | TECHNICAL SPECIFICATIONS | Horizontal resolution![]() |
5 Meters (~15 feet) | Varies across datasets. | 30 meters | ||
50 | TECHNICAL SPECIFICATIONS | Other Available Data Layers![]() |
On map: Social Vulnerability, Population Density, Ethnicity, Income, Property, Landmarks. In analysis and comparison tools: about 100 population and infrastructure variables. | Flood Frequency, Social and Economic Vulnerability at Census block groups, Marsh Impacts, Photo visualizations of key landmarks | Infrastructure, Land Use/Zoning, Natural Resources, Socieconomic data | Population density, poverty density, elderly density, employment density, projected population change, developed land cover, critical facilities, land cover changed to developed (1996-2011), natural areas and open space, potential pollution sources | Land Loss, Coastal Master Plan (projects), Socio-Economics, and Resources to Reduce Risk. |
50 | TECHNICAL SPECIFICATIONS | Place name searchable | Yes | Yes | Yes | No | Searchable by address |
50 | TECHNICAL SPECIFICATIONS | Maximum Zoom-in![]() |
1:4,500 | Tile cached data to 1:18,055 | Tile cached data to 1:5,000 | Tile cached data to 1:18,055 | 1:9,000 |
50 | TECHNICAL SPECIFICATIONS | Map Services Available![]() |
No | Yes | Yes | Yes | No |
50 | TECHNICAL SPECIFICATIONS | Data Download Available![]() |
Yes | Yes | Yes | No | No |
50 | TECHNICAL SPECIFICATIONS | If data download available, please list
types![]() |
Summary tables and detailed lists in Excel for 100+ demographic, economic, infrastructure and environmental variables, tabulated by state, county, municipality, zip code, planning and legislative districts, & more | Inundation, confidence, shallow coastal flooding, SOVI, and DEMs, and Marsh migration upon request | Various | N/A | |
50 | TECHNICAL SPECIFICATIONS | Does tool use other map services?![]() |
No | Yes, ESRI Basemaps | FEMA, NOAA | Yes, ESRI Basemaps, Esri Population Change Projections 2012-2017 | ESRI Basemaps |
50 | TECHNICAL SPECIFICATIONS | Additional Software Needed![]() |
No | No | No | No | No |
50 | TECHNICAL SPECIFICATIONS | Cross Platform![]() |
Yes (modern browsers) | Yes | Yes | Yes | Best in Google Chrome, Mozilla Firefox; not surpported by Internet Explorer |
50 | TECHNICAL SPECIFICATIONS | Mobile Compatible![]() |
On modern tablets/phones | Yes, but not phones | Yes | Yes | No |
60 | OTHER | Training Requirements![]() |
None but support available as needed. | None | None but suggested | None | No, however overview video and FAQs are available |
60 | OTHER | Documentation, Training & Technical
Resources![]() |
Research papers for each state, FAQs, methodologies, tutorials | FAQs, methodologies, and related technical documents; brief "First Time Tips" video; 56-minute recorded webinar, In-person or online training available upon request | Video tutorials for: General Navigation; Scenario Planning; video simulations for apps including Flood & Sea Level Rise, Coastal Defense and Risk Explorer. Metadata and methods documented and accessible within the tool. Associated website for FAQ and project information | FAQs, data documentation, new training link to the tool that includes a pre-recorded detailed demonstration | Frequently Asked Questions (FAQs), "How-To" video (Introduction to the Flood Risk and Resilience Viewer) |
60 | OTHER | Is the tool based on, or featured in, any
peer-reviewed publication(s)? If so, please list (INCLUDE LINKS IF AVAILABLE)![]() |
Based on Strauss et al 2012 and Tebaldi et al 2012, Environmental Research Letters. Featured in Wong-Parodi G, Fischhoff B, and Strauss BH (2014) Climatic Change, 1-9, Stephens et al 2014 Science Communication, and the Science of Science Communication II Sackler Colloquium PNAS 2014. | Marcy, et al., 2011. “New Mapping Tool and Techniques for Visualizing Sea Level Rise and Coastal Flooding Impacts.” In Proceedings of the 2011 Solutions to Coastal Disasters Conference, Anchorage, Alaska, June 26 to June 29, 2011, edited by Louise A. Wallendorf, Chris Jones, Lesley Ewing, and Bob Battalio, 474–90. Reston, VA: American Society of Civil Engineers. | Yes, various publications listed here: http://coastalresilience.org/resources | None | No |
60 | OTHER | Costs![]() |
None | None | Free of charge. Open source code for the tool framework and individual apps are available under a GNU General Public License, version 3 agreement at https://github.com/CoastalResilienceNetwork | None | No |
60 | OTHER | Are Future Versions Planned?![]() |
Yes | Version 3.0 released in 2017 | Yes. Tool framework https://github.com/CoastalResilienceNetwork/GeositeFramework being upgraded on GitHub in 2015-2016 as well as individual browser-based apps (Coastal Resilience 3.0) | Future updates anticipated | Yes, will update with new 2017 Coastal Master Plan data and recommended projects (early 2017). |