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This shapefile represents the 3D building footprints contained within the Gallatin River and Tributaries River LiDAR Study Area. The LiDAR derived average building heights of each structure as well as the lowest adjacent gradient value (LAG) are provided within each polygon. The horizontal datum for this dataset is NAD83 (2011), the vertical datum is NAVD88, Geoid 12A, and the data is projected in Montana State Plane. Horizontal units are in International Feet and vertical units are in US Survey Feet. 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