2018 | Richard Carstensen | 2 geoPDFs

geopdf_valleyloweraerial2019 High-resolution GeoPDF pair for field navigation in lower Áak’w Táak, inland from little lake (Mendenhall Valley). Includes on-foot destinations from all 5 Valley schools: Glacier Valley (GV), Floyd Dryden (FD), Mendenhall River (MR), Thunder Mt High (TMH) and Riverbend (RB). (For up-valley walks from Mendenhall River School, use GeoPDFs Áak’w Táak upper.) 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 trails, and surficial geology units. Thick blue lines are “subsheds,” mapped during the CBJ wetlands project—from left to right: Montana, Aak’w, Duck and Jordan.. Upper limits of the green tint at 32 feet show maximum tidal incursion at peak Little Ice Age. The surf-geo map calls these “emergent tidal.”

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 (5.5MB)

Download aerial geoPDF here (8.5MB)

Download 2019 post-oxbow-breach geoPDF here (4MB)