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This column highlights an ArcGIS web application that incorporates various California specific datasets and NGS data layers to assist surveyors planning vertical control surveys. The GNSS Leveling Web ...
A screenshot of HVO’s new ArcGIS Online web map for eruption map data, displaying FlowPolys features that depict lava flow boundaries from the 2022 Mauna Loa eruption. (USGS/Courtesy graphic) ...