Videos

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.

USGS invited all federally recognized Tribes, Alaska Native Corporations, and Native Hawaiian Organizations to virtual informational meetings on March 11, 2024 and March 22, 2024 about the 3D National Topography Model and its components, the 3D Elevation Program and the 3D Hydrography Program.

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

The US Army Corps of Engineers (USACE) office in Huntington, WV provides a number of floodplain management services. These include base flood elevation (BFE) evaluations, watershed modeling, project planning, and responding to numerous technical questions.

The U.S. Geological Survey (USGS) 3D Elevation Program (3DEP) provides high accuracy, high-resolution (HR) elevation data for the United States.

Agenda:  

Topic is “The NHD to 3DHP – midyear update” 

Agenda: 

• 00:00 – Start 
• 1:57 - The NHD to 3DHP – midyear update (section1 - Steve Aichele) 
• 28:13 - The NHD to 3DHP – midyear update (section2 – Sue Buto) 
• 43:05 - Closing remarks 

Links: 

HY_Features is the international standard conceptual data model for surface hydrologic features which will be used as the basis for the 3DHP data model – the planned successor to the NHD.

The U.S. Geological Survey (USGS) has developed a vision for the 3D National Topography Model (3DNTM), which will integrate USGS elevation and hydrography datasets to model the Nation's topography in 3D.

The USGS is developing the 3D Hydrography Program (3DHP) as the surface water mapping component of the new 3D National Topography Model (3DNTM.) The 3DHP will provide critical data to support a broad range of national, regional, and local applications such as flood forecasting and response, agricultural planning, infrastructure design, stream ecology research a