Spring NEARC 2026: Full Schedule

1:15pm EDT

Advancements in the USGS StreamStats Web Application for Delineation of Urban Watersheds

Tuesday May 26, 2026 1:15pm - 1:45pm EDT

The USGS, in cooperation with Federal, State, and municipal agencies, have recently incorporated watershed-scale stormwater infrastructure data into the publicly accessible StreamStats web application for Washington, D.C. and the Mystic and Neponset watersheds in Massachusetts. Using high-resolution lidar-derived elevation data and municipal stormwater infrastructure datasets, StreamStats can compute a connected network of surface and piped flow that more accurately represents urban topography and stormflow. The updated StreamStats functionality supports stakeholder efforts to address stormwater challenges in urbanized areas by allowing users to view the network of stormwater pipes and inlets, delineate drainage areas, and compute available basin characteristics. This presentation will describe the data, methods, challenges, and advantages to developing this urban stormwater functionality in StreamStats.

Speakers

Laura Luongo

Physical Scientist, United States Geological Survey

Tuesday May 26, 2026 1:15pm - 1:45pm EDT
Room 174

Hydrology

1:45pm EDT

Making a Water Connection: 3DHP and Stormwater

Tuesday May 26, 2026 1:45pm - 2:15pm EDT

Room 174

This presentation will examine the procedures for obtaining and implementing the stormwater data for the MassGIS 3DHP project. The 3DHP data product is high quality surface water mapping derived from high-resolution LIDAR (Light Detection And Ranging) elevation data. The project connected the 3DHP surface water dataset to stormwater infrastructure datasets, enabling modeling of water diverted by inlets, pipes, and culverts and should assist municipalities in mitigating and planning for intense rainfall events. The stormwater data set will also improve stormwater infrastructure planning, design and construction going forward.

The official 3DHP dataset would include elevation derived stream data and the “connectors”. The connectors could be culverts, stormwater infrastructure, or ditches. Furthermore, MassGIS wants to aggregate municipal datasets to create a state-wide stormwater dataset as a feature data service. The feature service could be protected with login and password credent

Speakers

Tom Mueller

Deputy Director, MassGIS

Tuesday May 26, 2026 1:45pm - 2:15pm EDT
Room 174

Hydrology

2:15pm EDT

Remapping our Nation’s streams: How the USGS 3D Hydrography Program (3DHP) supports New England

Tuesday May 26, 2026 2:15pm - 2:45pm EDT

Room 174

The USGS has launched the 3D Hydrography Program (3DHP), an initiative to remap the Nation’s hydrography using a nationally consistent, 3D stream network derived from high-quality lidar data. 3DHP aims to greatly enhance the locational accuracy of mapped streams, provide z-elevation data to the stream network, and increase the mapping density of headwater streams.

Using elevation as the foundation for 3DHP hydrography ensures that these fundamental datasets are aligned, enhancing their compatibility and usability for scientific analysis, modeling, and other applications. Additionally, 3DHP provides a network-addressable hydrographic framework that enables users to reference, index, and link external datasets—such as water quality measurements, infrastructure, and features like wetlands—to stream networks.

This presentation highlights the key advancements of 3DHP, explores its current development in New England, and showcases examples of how 3DHP addresses local needs.

Speakers

Adam Benthem

National Map Liaison, USGS

Adam studies the anthropogenic modification of rivers and land surfaces. He specializes in using remote sensing to monitor and predict landform change through time with a focus on integrating field-based site measurements with regional-scale geospatial datasets. He received his Master’s... Read More →

Tuesday May 26, 2026 2:15pm - 2:45pm EDT
Room 174

Hydrology

Spring NEARC 2026

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Spring NEARC 2026

1:15pm EDT

Laura Luongo

1:45pm EDT

Tom Mueller

2:15pm EDT

Adam Benthem

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