2018 | Richard Carstensen | 2 geoPDFs

High-resolution GeoPDF pair for field navigation at Koosh, oozing sore (Sheep Creek) The Olson/Kunz files (1992) also translate this muddy flats. In apps such as Avenza, on your phone or tablet, you can see your GPS/cell-triangulation position on this image, and lay a track.

First choice below is a LiDAR-derived bare-earth hillshade with modeled streams and 10-foot contours. Other layers, exported from ArcMap, are named roads, hiking trail. Upper limits of the green tint at 32 feet show maximum tidal incursion at peak Little Ice Age. Other colors show parcels of the larger land owners. With trees (point cloud) digitally removed, this bare earth shows the platform leveled off for the old Alaska Gastineau Mine (AGM).

The second choice is a 2013 orthophoto with overlain streams and trails. More information on geoPDFs and use of Avenza is at Media types>Maps&geoPDFs., and at Tools>Field navigation.

Download hillshade geoPDF here (5MB)

Download aerial geoPDF here (5MB)