Hydrography Specifications
Topographic Map Standards and Specifications
3D Elevation Program Specifications
NGP Standards and Specifications
Standards and specifications are essential to facilitate the development and sharing of geospatial data and products.
National Geospatial Program (NGP) standards and specifications define requirements to ensure that all maps and data prepared by NGP, in support of The National Map, are consistent in accuracy, structure, format, style, and content.
Standards and Specifications
Standards and Specifications
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What are standards and specifications?
What are standards and specifications?
Is it a standard or is it a specification? Learn which is which.
For comments or questions about any USGS National Geospatial Program standards and specifications, please e-mail tnm_help@usgs.gov.
News
Lidar Base Specification 2023 rev. A is now available
Lidar Base Specification 2023 rev. A is now available
3DEP Lidar Base Spec News
3DEP Lidar Base Spec News
Lidar Base Specification 2022 rev. A is now available!
Lidar Base Specification 2022 rev. A is now available!
Publications
Elevation-derived hydrography acquisition specifications
Hydrographic features derived from U.S. Geological Survey (USGS) 3D Elevation Program data, and collected for use by the USGS, must meet the specifications described in this document. The specifications described herein pertain to the final product delivered to the USGS, not to methods used to derive the hydrographic features. The specifications describe the collection area, spatial...
Elevation-derived hydrography—Representation, extraction, attribution, and delineation rules
With the increasing availability of 3D Elevation Program (3DEP) quality high resolution elevation data across the United States and the pressing need for better integrated elevation and hydrography data, the U.S. Geological Survey is developing guidance to improve the horizontal and vertical alignment of these datasets. The U.S. Geological Survey is providing the Elevation-Derived...
US Topo Product Standard
This document defines a U.S. Geological Survey (USGS) digital topographic map. This map product series, named “US Topo,” is modeled on the now historical USGS 7.5-minute (1:24,000 scale) topographic map series produced and printed by the USGS from 1947 to 2006. US Topo maps have the same extent, scale, and general layout as the historical topographic maps. US Topo maps incorporate an...