Karen F Adkins

Steve Aichele, the National Geospatial Program Hydrography Management and Planning Lead, announced publication of the Holston River, TN hydrologic unit 10 (0601010403) in the 3D Hydrography Program web map services and provided update on HydroAdd planned release of the Beta version (August 2025) and version 1.0 (September 2025).  

Steve Aichele, the National Geospatial Program Hydrography Management and Planning Lead, announced release of the Elevation Derived Hydrography Specification 2024 Revision A3 and updates on the following:   

Steve Aichele, the National Geospatial Program Hydrography Management and Planning Lead, announced release of updated Elevation Derived Hydrography Specifications and publication of the following products and services: 

The 3D Hydrography Program (3DHP) database will initially be populated with the National Hydrography Dataset (NHD) features, mapped to the new data model. The NHD-source features will be replaced with hydrography derived from the 3D Elevation Program (3DEP) lidar and IfSAR data as it becomes available.

Federal Fiscal Year 2024 was the first full operational year for the 3D Hydrography Program. We made significant progress in a number of areas, publishing final versions of legacy products, and developing processes for the new program. This presentation will provide an overview of what was accomplished in FY24 and what is planned for FY25. 

The USGS-NFHP Webinar on the 3D Hydrography Program (3DHP) and The National Map (TNM) provided a deep dive into the current state and future direction of USGS hydrography and elevation data, focusing on the replacement of legacy datasets with highly accurate, 3D-enabled data.

The U.S. Geological Survey and the University of Massachusetts at Amherst (UMass Amherst), in cooperation with the Massachusetts Department of Environmental Protection (MassDEP), began a series of studies in 2019 to develop a web-based statewide hydraulic modeling tool to provide preliminary culvert designs for stream-crossing projects in Massachusetts.

The new 3D Hydrography Program (3DHP) is the focus of USGS efforts to acquire and produce detailed surface-water mapping information, such as lakes, ponds, rivers and streams.

The U.S. Geological Survey (USGS) Watershed Boundary Dataset (WBD) is a national hydrologic unit (HU) geospatial dataset that defines surface drainage areas for the United States. This dataset provides a foundation for local, regional, and national applications to manage, archive, exchange, and analyze data by HU.

Presenters are Rebecca Ransom and David Ladd with the USGS Lower Mississippi Gulf Water Science Center in Nashville, TN. 

Our material is taken from the "USGS National Hydrography Datasets – What’s Happening Now?" session previously held at the recent American Water Resources Association (AWRA) Geospatial Water Technology Conference earlier in May. We will cover: