| snippet:
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Proof of Concept for Added Value Flood Mapping Tool (Experimental) - TEST.
This is experimental and requires further development and research prior to any use with the Disasters Program. |
| summary:
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Proof of Concept for Added Value Flood Mapping Tool (Experimental) - TEST.
This is experimental and requires further development and research prior to any use with the Disasters Program. |
| extent:
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[[-104.2799988,22.92040062],[-61.76245117,52.04399872]] |
| accessInformation:
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NASA LaRC, SatCORPS; VIIRS; USACE; FEMA; FHWA; ORNL; HIFLD.
Processing by NASA Disasters. |
| thumbnail:
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thumbnail/thumbnail.png |
| maxScale:
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1.7976931348623157E308 |
| typeKeywords:
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["Data","Service","Map Service","ArcGIS Server"] |
| description:
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<div><div><font color='#2f4f4f' size='3'><b>Date of Image(s)</b></font></div><div><font color='#2f4f4f' size='3'><br /></font></div><div><font color='#2f4f4f' size='3'>Post-Event: April 7, 2025</font></div><div><font color='#2f4f4f' size='3'><br /></font></div><div><font color='#2f4f4f' size='3'>Infrastructure data was extracted in early May 2025.</font></div><div><font color='#2f4f4f' size='3'><br /></font></div><div><font color='#2f4f4f' size='3'><b>Date of Next Image </b></font></div><div><font color='#2f4f4f' size='3'><br /></font></div><div><font color='#2f4f4f' size='3'>None planned</font></div><div><font color='#2f4f4f' size='3'><br /></font></div><div><font color='#2f4f4f' size='3'><b>Summary</b></font></div><div><font color='#2f4f4f' size='3'><b><br /></b></font></div><div><font color='#2f4f4f' size='3'>Floodwater is derived from Visible Infrared Imaging Radiometer Suite (VIIRS) instrument onboard NASA and NOAA Suomi National Polar-orbiting Partnership (Suomi NPP) satellite.</font></div><div><font color='#2f4f4f' size='3'><br /></font></div><div><font color='#2f4f4f' size='3'>VIIRS floodwater product was produced by NASA SatCORPS Ground Station Observation Network (GSON) low latency system. More information can be found </font><a href='https://disasters-geoplatform.hub.arcgis.com/pages/viirs-floodwater-fraction-map/' rel='nofollow ugc' target='_blank'>here</a><font color='#2f4f4f' size='3'>.</font></div><div><font color='#2f4f4f' size='3'><br /></font></div><div><font color='#2f4f4f' size='3'>The image (<i>Flood Polygons </i>layer) shows where floodwater was detected from the VIIRS observation as a fraction percentage. The Flood Polygons layer was used to identify administrative areas, structures, and critical infrastructure that may be a risk of flooding after an event. This test case used the VIIRS Flood product for the Severe Weather in April 2025.</font></div><div><font color='#2f4f4f' size='3'><br /></font></div><div><font color='#2f4f4f' size='3'><b>Suggested Use</b></font></div><div><font color='#2f4f4f' size='3'><br /></font></div><div><font color='#2f4f4f' size='3'>The map shows the floodwater fraction percentage (1-100%) that contains water. Floodwater fraction values (color map 101-200) are isolated and converted to polygons (<i>Flood Polygons</i> layer).</font></div><div><font color='#2f4f4f' size='3'><br /></font></div><div><font color='#2f4f4f' size='3'><i>Processed layer - Areas of Interest: </i>Each polygon in the administrative boundary is intersected with the vectorized flood fraction product. The symbolized output indicates the percentage of area as a fraction of total administrative boundary area that intersects with a pixel in the flood fraction product at certain thresholds (if applicable), described in the legend.</font></div><div><font color='#2f4f4f' size='3'><br /></font></div><div><font color='#2f4f4f' size='3'><i>Processed layer - Critical Infrastructure: </i>A 375m buffer (equal to the flood model resolution) was created around each point and intersected with the vectorized flood fraction product. The symbolized output indicates if the buffer corresponded with a flooded pixel, serving as a potential signal for exposed infrastructure. Unexposed infrastructure in the AOI is retained.</font></div><div><font color='#2f4f4f' size='3'><br /></font></div><div><font color='#2f4f4f' size='3'><i>Processed layer - USA Structures:</i> Each structure was intersected with the vectorized flood fraction product. The symbolized output indicates if the buffer corresponded with a flooded pixel, serving as a potential signal for exposed infrastructure. Unexposed infrastructure in the AOI is retained.</font></div><div><font color='#2f4f4f' size='3'><br /></font></div><div><font color='#2f4f4f' size='3'><i>Processed layer - Roads:</i> A 375m buffer (equal to the flood model resolution) was created around each line in the roads database. Each segment of road that intersected a flooded pixel was grouped and dissolved to flag road segments potentially at risk.</font></div><div><font color='#2f4f4f' size='3'><br /></font></div><div><font color='#2f4f4f' size='3'><b>Satellite/Sensor:</b></font></div><div><font color='#2f4f4f' size='3'><b><br /></b></font></div><div><font color='#2f4f4f' size='3'>VIIRS instrument onboard SNPP Satellite Generated using CSPP v4.1.</font></div><div><font color='#2f4f4f' size='3'><br /></font></div><div><font color='#2f4f4f' size='3'><b>Resolution:</b></font></div><div><font color='#2f4f4f' size='3'><br /></font></div><div><font color='#2f4f4f' size='3'>375 meters</font></div><div><font color='#2f4f4f' size='3'><br /></font></div><div><font color='#2f4f4f' size='3'><b>Credits:</b></font></div><div><font color='#2f4f4f' size='3'><br /></font></div><div><font color='#2f4f4f' size='3'><i>Flood Product Information:</i></font></div><div><font color='#2f4f4f' size='3'>NASA Langley SatCORPS: </font><a href='https://satcorps.larc.nasa.gov/new/' rel='nofollow ugc' target='_blank'>https://satcorps.larc.nasa.gov/new/</a></div><div><font color='#2f4f4f' size='3'>NOAA Joint Polar Satellite System (JPSS) VIIRS Data:</font><a href='https://registry.opendata.aws/noaa-jpss/' rel='nofollow ugc' target='_blank'>https://registry.opendata.aws/noaa-jpss/</a></div><div><font color='#2f4f4f' size='3'>Additional information on VIIRS Flooding products: </font><a href='https://disasters-geoplatform.hub.arcgis.com/pages/viirs-floodwater-fraction-map' rel='nofollow ugc' target='_blank'>https://disasters-geoplatform.hub.arcgis.com/pages/viirs-floodwater-fraction-map</a></div><div><font color='#2f4f4f' size='3'><br /></font></div><div><font color='#2f4f4f' size='3'><i>Added Value and Infrastructure Information:</i></font></div><div><font color='#2f4f4f' size='3'>Geospatial processing over infrastructure and administrative areas performed by the DRCO (</font><a href='mailto:drcs@nasa.gov' rel='nofollow ugc' target='_blank'>drcs@nasa.gov</a><font color='#2f4f4f' size='3'>).</font></div><div><font color='#2f4f4f' size='3'>Infrastructure data was gathered from </font><a href='https://hifld-geoplatform.hub.arcgis.com/pages/hifld-open' rel='nofollow ugc' target='_blank'>HIFLD Open</a><font color='#2f4f4f' size='3'>, with original data sources including the U.S. Army Corps of Engineers (National Inventory of Dams), Federal Highway Administration (Roads, the National Bridge Inventory), and various state and local sources (hospitals). </font></div><div><font color='#2f4f4f' size='3'>Structure data was gathered from the Federal Emergency Management Agency (FEMA) </font><a href='https://disasters.geoplatform.gov/USA_Structures/' rel='nofollow ugc' target='_blank'>Structures database</a><font color='#2f4f4f' size='3'>.</font></div><div><font color='#2f4f4f' size='3'>Administrative boundaries were collected from the U.S. </font><a href='https://www.census.gov/cgi-bin/geo/shapefiles/' rel='nofollow ugc' target='_blank'>Census Bureau's TIGER/Line Shapefiles</a><font color='#2f4f4f' size='3'>.</font></div><div><font color='#2f4f4f' size='3'><br /></font></div><div><font color='#2f4f4f' size='3'><b>Esri REST Endpoint:</b></font></div><div><font color='#2f4f4f' size='3'><br /></font></div><div><font color='#2f4f4f' size='3'>See URL section on right side of page.</font></div></div><div><font color='#2f4f4f' size='3'><br /></font></div> |
| licenseInfo:
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<div style='box-sizing:border-box; width:1020px; max-width:68vw; padding-left:0.5rem; padding-right:0.5rem; margin-top:1.5rem; margin-bottom:3rem; margin-right:59px; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'><div><div style='margin-bottom:3rem;'><div><div style='max-width:100%; display:inherit;'><div style='box-sizing:border-box; width:1020px; max-width:68vw; padding-left:0.5rem; padding-right:0.5rem; margin-top:1.5rem; margin-bottom:3rem; margin-right:59px;'><div style='margin-bottom:3rem;'><div style='max-width:100%; display:inherit;'><div style='box-sizing:border-box; width:1020px; max-width:68vw; padding-left:0.5rem; padding-right:0.5rem; margin-top:1.5rem; margin-bottom:3rem; margin-right:59px;'><div style='margin-bottom:3rem;'><div style='max-width:100%; display:inherit;'><div style='box-sizing:border-box; width:1020px; max-width:68vw; padding-left:0.5rem; padding-right:0.5rem; margin-top:1.5rem; margin-bottom:3rem; margin-right:59px;'><div style='margin-bottom:3rem;'><div style='max-width:100%; display:inherit;'><p style='margin-top:0px; margin-bottom:1.5rem;'>NASA data and products are freely available to federal, state, public, non-profit and commercial users. This information can be experimental- or research-grade data products and may not be appropriate for operational use. These NASA data products, services, and the Disasters Mapping Portal are intended to aid decision makers and enhance situational awareness, but these data are not guaranteed to be consistently available or routinely updated.</p></div></div></div></div></div></div></div></div></div></div></div></div></div></div> |
| catalogPath:
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| title:
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Proof of Concept for Added Value Flood Mapping Tool (Experimental) - TEST |
| type:
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Map Service |
| url:
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|
| tags:
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["Experimental","Infrastructure","Roads","Hospitals","Dams","Bridges","Flooding","Structures","Added Value","CONUS","Severe Weather"] |
| culture:
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en-US |
| name:
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Proof_of_Concept__April_SWX |
| guid:
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6E3C4647-701F-4B45-BB21-7BFF28F43831 |
| minScale:
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0 |
| spatialReference:
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GCS_WGS_1984 |