The Organizing Principals of Hydrologic Landscapes

National Hydrography Advisory Call:

This episode features speaker David Blodgett (USGS Water Mission Area). Dave discusses the status of his work toward developing a data model for hydrographic features or hydrologic features published through the Open Geospatial Consortium, and then various other kind of national modeling efforts that he has been engaged in. Further, a discussion of the dual concept of drainage basin and mainstem that are really kind of an organizing principal for hydrologic landscapes.

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