Chesapeake Bay Elevation-derived Hydrography

National Hydrography Advisory Call:

This episode features speaker Matt Baker (University of Maryland, Baltimore County) Matt provides background on a project conducted in the Chesapeake Bay watershed with the goal of deriving high-resolution hydrography from elevation data sets. The presentation also reviews field data collected, the work to detect channels and the workflow of the algorithm used to develop network data sets and then some of the rather unusual attributes that were generated.

Hydrography for the Nation:

High-quality hydrography data are critical to a broad range of government and private applications. Resource management, infrastructure planning, environmental monitoring, fisheries management, and disaster mitigation all depend on up-to-date, accurate, and high-quality hydrographic data. The U.S. Geological Survey National Geospatial Program National Hydrography Advisory Call has initiated a series of virtual seminars to highlight the uses of hydrographic data. These presentations are intended to share success stories from users who have solved real world problems using hydrography data, provide information about the National Hydrography Dataset and related products. The USGS manages surface water and hydrologic unit mapping for the Nation as geospatial datasets. These include the National Hydrography Dataset (NHD), Watershed Boundary Dataset (WBD), and NHDPlus High Resolution (NHDPlus HR). Hydrography data are integral to a myriad of mission critical activities undertaken and managed by government entities (Federal, State, regional, county, local, Tribal), nonprofit organizations, and private companies.

For more detailed information on national hydrography products visit https://usgs.gov/NHD