{ "culture": "en-US", "name": "Rainfall_NearFutureMod", "guid": "", "catalogPath": "", "snippet": "Rainfall-driven flooding includes changing precipitation projections based on NOAA-MARISA predictive intensity, duration, and frequency curves. For each scenario, cross-referencing related the rainfall intervals to 2-, 5-, 10-, 25-, 50-, 100-, and 500-year recurrence intervals. The most-frequent (least-rare) event that floods the location per given time horizon is mapped.", "description": "

As part of pluvial development for CRMP Phase II, a total of 1830 pluvial models were produced across the 16,600 square miles and 57 counties within the CRMP study area.<\/span><\/p>

The scenario-based products are derivatives of the rainfall interval-based products. Phase II of the CRMP has adopted a planning framework encompassing five scenarios, including present (current conditions) and near-future and far-future time horizons with moderate and high projections. <\/span><\/p>

Moderate projections represent a \u201cbest estimate\u201d for future conditions, while High projections indicate a less likely but possible future with higher sea level rise and precipitation estimates, which may be favored for use in decisions with little tolerance for risk.<\/span><\/p>

For each scenario, cross-referencing related the rainfall intervals to 2-, 5-, 10-, 25-, 50-, 100-, and 500-year recurrence intervals. The most-frequent (least-rare) event that floods the location per given time horizon is mapped.<\/span><\/p>

For more information see CRMP II Appendix A Flood Hazard Data Development at https://www.dcr.virginia.gov/crmp/plan-phase2 <\/span><\/p>

and the Pluvial Modeling Technical Memorandum: <\/span><\/p>

https://vadcr-frp.s3.amazonaws.com/Pluvial_CRMP/VACRMP_PluvialModelingReport_Final_20240614.pdf<\/span><\/p><\/div><\/div><\/div>", "summary": "Rainfall-driven flooding includes changing precipitation projections based on NOAA-MARISA predictive intensity, duration, and frequency curves. For each scenario, cross-referencing related the rainfall intervals to 2-, 5-, 10-, 25-, 50-, 100-, and 500-year recurrence intervals. The most-frequent (least-rare) event that floods the location per given time horizon is mapped.", "title": "Rainfall_NearFutureMod", "tags": [ "resilience", "rainfall", "flood", "pluvial" ], "type": "Image Service", "typeKeywords": [ "ArcGIS Server", "Data", "Image Service", "Service" ], "thumbnail": "", "url": "https://floodmaps.dcr.virginia.gov/arcgis", "minScale": 2311162.217155, "maxScale": 72223.819286, "spatialReference": "WGS_1984_Web_Mercator_Auxiliary_Sphere", "accessInformation": "", "licenseInfo": "", "portalUrl": "" }