NOAA Atlas 14 design storm analysis, stormwater depth grids, detention basin sizing, and automated engineering reports — delivered as a REST API for drainage engineers and municipal planners.
From NOAA Atlas 14 rainfall inputs to detention basin sizing and flood depth mapping — all automated, all API-driven.
Standard 2-year through 500-year return period design storms from NOAA Atlas 14 precipitation frequency data for any U.S. location.
GeoTIFF rainfall depth and runoff depth rasters with proper CRS tagging — ready for GIS integration, floodplain mapping, or SWMM input generation.
Publication-ready stormwater engineering reports with design storm parameters, depth statistics, NOAA Atlas 14 citations, and site maps.
Pre/post development runoff comparison and detention volume estimates for permit-level stormwater management submittals.
Combine rainfall-driven inland flooding with coastal storm surge scenarios (CVG Storm Surge Wizard) for comprehensive compound event analysis.
Submit multiple return periods in a single API call for complete design storm envelope analysis — 2yr, 10yr, 25yr, 50yr, 100yr, 500yr.
All standard drainage design return periods available in a single API. Use any combination for design storm envelope analysis.
| Return Period | API Parameter | Exceedance Probability | Frequency | Typical Application |
|---|---|---|---|---|
| 2-Year | 2yr | 50%/year | Very Common | Minor culverts, grassed waterways, water quality |
| 10-Year | 10yr | 10%/year | Common | Storm drain system design, roadway drainage |
| 25-Year | 25yr | 4%/year | Moderate | Detention basin design, major culverts |
| 50-Year | 50yr | 2%/year | Infrequent | Major infrastructure, interstate drainage |
| 100-Year | 100yr | 1%/year | Rare | FEMA BFE, floodplain permitting, SFHA analysis |
| 500-Year | 500yr | 0.2%/year | Extreme | Critical facilities, FEMA 0.2% flood zone |
Structured JSON in, validated stormwater analysis out — no HEC-RAS license, no manual Atlas 14 lookups.
Submit your DEM, watershed boundary, land use/CN grid, and design storm return period in a JSON configuration payload.
/runThe API retrieves NOAA Atlas 14 data for your location, runs the hydrologic analysis pipeline, and generates depth grids.
Download your GeoTIFF depth raster, JSON metadata with peak flow statistics, and PDF stormwater engineering report.
Use NOAA-backed results for permit applications, drainage studies, FEMA LOMA/LOMR submittals, and capital planning.
Drainage design for development sites — culvert sizing, overland flow paths, and detention pond volume calculations for permit submittals.
MS4 permit compliance, watershed master planning, and capital improvement prioritization for stormwater infrastructure.
Hydrologic inputs for FEMA LOMR/LOMA, floodway re-delineation, and NFIP community studies requiring Atlas 14 documentation.
Inland stormwater flooding combined with coastal storm surge for compound event risk analysis tied to CVG Storm Surge Wizard.
100-year and 500-year flood extent mapping for comprehensive community resilience plans and hazard mitigation programs.
Roadway drainage design — bridge hydraulics, culvert sizing, and roadway inundation risk screening for DOT projects.
All plans include NOAA Atlas 14 access, all return periods, and HTTPS. Bundle all three Wizards for the full CVG Flood Intelligence platform.
/docs/metrics)Combine all three CVG wizards for the most comprehensive coastal and inland flood analysis capability available as a managed API service.
NOAA-validated coastal inundation analysis. SLOSH, ADCIRC, SCHISM, and SWAN solver support with automated depth grids and PDF reports.
NOAA TR-083 sea level rise projections for 14 tide gauge stations. Six scenarios from Low to Extreme for 2020–2100 planning horizons.
NOAA Atlas 14 design storm analysis, stormwater depth grids, and detention sizing for inland drainage engineering workflows.
Talk to a GISP-certified drainage engineer about your stormwater analysis needs. We'll scope your project and recommend the right plan.