7.5-minute quadrangle maps that contain topographic change polygons
Detailed Description
The USGS 7.5-minute quadrangle maps that contain topographic change polygons. These quadrangles are the ones that are candidates for updated topographic mapping. In fact, a number of these areas have already been updated with the high-resolution, high-accuracy data that have recently been integrated into the NED.
Sources/Usage
Public Domain.
Related
Quadrangle Base Maps
Many resource managers and geospatial data users are familiar with the USGS 7.5-minute quadrangle map series. Also, much of the geospatial data managed by the USGS was originally produced in tiles corresponding to the 7.5-minute maps. The topographic map quadrangles are still commonly used as base maps for outlining data collection strategies and defining project boundaries. Thus, it is useful to...
Error Sources, Uncertainty, Limitations, and Uses
In a study such as this one, with diverse input datasets that cover a broad area, data characteristics and quality can have spatially varying effects on derived information. In the context of data processing methods, unique characteristics of both the NED and SRTM data had to be accounted for in the processing approach to reduce errors of commission. While it is desirable to have a final...
Related
Quadrangle Base Maps
Many resource managers and geospatial data users are familiar with the USGS 7.5-minute quadrangle map series. Also, much of the geospatial data managed by the USGS was originally produced in tiles corresponding to the 7.5-minute maps. The topographic map quadrangles are still commonly used as base maps for outlining data collection strategies and defining project boundaries. Thus, it is useful to...
Error Sources, Uncertainty, Limitations, and Uses
In a study such as this one, with diverse input datasets that cover a broad area, data characteristics and quality can have spatially varying effects on derived information. In the context of data processing methods, unique characteristics of both the NED and SRTM data had to be accounted for in the processing approach to reduce errors of commission. While it is desirable to have a final...