Susan G. Buto

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 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.

Joshua Greenberg works at the Washington Department of Ecology as the Hydrography Steward. He has been very active in supporting professional GIS organizations within Washington, including being on the board of the local ASPRS chapter, WAGISA (WAURISA), and WAGIC co-chair. Josh earned his B.A.

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

The presenter is Dave Blodgett. Dave is a Civil Engineer with the USGS Water Mission Area and is also on assignment to NGTOC's Topographic Applied Research Team. 

Our topic will be "Towards an Internet of Water: Creating a community search index for water data.” The presenter will be Kyle Onda, Director, Internet of Water with the Center for Geospatial Solutions, Lincoln Institute of Land Policy. 

Summary: 

Agenda:  

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: 

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: 

The HydroAdd tool is a web application built by USGS that allows collaborative addressing (or linear referencing) of diverse datasets to the NHD. HydroAdd also provides tools that allow users to migrate datasets that have been previously addressed to the NHD.

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.