Floodplain & Drainage Modeling
Atlas Mapping Solutions provides high-resolution aerial LiDAR and terrain data to support hydrologic, drainage, and floodplain workflows. Dense elevation datasets can be used by engineers, hydrologists, GIS professionals, and environmental teams for watershed analysis, drainage modeling, flood mapping, and related terrain-based applications.
Elevation Data: Bare-earth DTMs support hydrologic modeling with vertical RMSE near 3 cm under optimal conditions.
Watershed Analysis: Flow direction, watershed boundaries, and stream networks are derived directly from terrain models and integrated into hydraulic software.
Deliverables: DTMs, DSMs, flood-mapping layers, elevation data, and GIS-ready terrain products for hydrologic and engineering workflows.
Coverage & Timeline: Entire basins can be mapped in a few flights. Processing and QA typically require 1–2 weeks for regional studies.
Weather Considerations: Flights are conducted in dry conditions when possible to avoid surface water distortion.
Standards: Data quality supports FEMA/NFIP-aligned studies with checkpoint validation on stable surfaces.
Legacy vs LiDAR: Older flood studies relied on sparse contours or stereo imagery. LiDAR reveals micro-topography such as berms and minor channels that significantly influence flow modeling.
