Core stream and hydrography network layers compiled by the NCDOT Environmental Analysis Unit from the USGS National Hydrography Dataset (NHD) at 1:24,000 scale.
HUC (Hydrologic Unit Code) watershed boundaries and specific watershed management areas used in NCDOT environmental screening and cumulative impact assessments.
Regulatory stream designations, impaired water listings, and biologically sensitive areas that trigger additional permit requirements for NCDOT transportation projects.
Regional ecological context, coastal regulatory areas, administrative boundaries, and environmental hazard layers used in NCDOT project planning and environmental review.
An interactive GIS viewer for NCDOT public hydrography and water quality services published by NC Department of Information Technology (NCDIT-T) through the Environmental Spatial Management (ESM) system.
Built by AllThingsSpatial (ATS) using the ArcGIS Maps SDK v5 and Calcite Design System v5. All 22 layers are publicly accessible — no sign-in required.
ArcGIS Maps SDK v5 · Calcite Design System v5 · ATS Location Platform