Scattered throughout JuneauNature, you’ll find interactive maps created in ArcGIS Online. The introductory map below delineates watershed units for the Juneau. A contour hillshade map is the default, but by clicking the 4-square basemap symbol, you can choose imagery or other options. Clicking within any of the subshed units launches a popup with more information. The box in upper right allows search for any feature on the base map. Try entering your street address, or a natural feature such as a stream or mountain.

At the bottom of this page, you’ll find sub-topics for our 13 key watersheds.

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Watersheds interpreted by Discovery Southeast during the CBJ Natural History Project are outlined in black.Trailhead interpretive sign locations in red. See a full version of the map by clicking on it.

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Bedrock Geology Map

Bedrock Geology Map

From Richard Carstensen:

Bedrock geology is a vast subject. Of greatest interest to naturalists are ways in which underlying rock types, alignments, fracture patterns, and variable resistance to erosion explain the shape of the land and the distribution of natural communities.

Here is a map of Bedrock geology. Units are based upon a detailed map-in-progress by USGS, but color coded by 6 broad rock-type families. Expand the legend (>>, upper left) to see them. Notice that granitic types (pink, our highest & most resistant peaks) are mostly back under the icefield. Rocks with highest carbonate content (blue) hosted most of Juneau’s successful mines. For more info on each rock unit, click, and a popup will name the geologic period (capital letters in the code), dominant rocks, and broader rock family

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Documenting change through repeat photography in Southeast Alaska

This report highlights historical photographs of Southeast Alaska from a variety of archives.  It focuses on repeat photography, the act of retaking historical photos and juxtaposing them with the originals in order to see changes in the land over time.  Not only does this report cover most of Southeast Alaska, it also offers insights into the past and future of photographic documentation.

Download Here (6MB): PDF_Download

Natural History of Juneau

Natural History of Juneau Trails: A Watershed Approach

$24.00

If you or someone on your gift list enjoys Juneau’s outdoors, this book is for you.  It is packed with information for the hiker, hunter, or any student of the outdoors.  Richard’s insightful text, full color maps, and dozens of recent and historic photographs explain the landforms, water features, and natural environments Juneau residents navigate every day.  Dive in for a whole new understanding of the areas you love to explore, with one of Southeast Alaska’s foremost naturalists.

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Our dynamic home: Southeast Alaska then and now

In this half-hour video of still photography, Richard Carstensen looks at a rich archive of historical aerial photos taken in 1948 for mapping purposes, and compares them to present day images of Southeast Alaska communities. The result illuminates not only how the natural areas have changed, but also how our communities have changed.

From Richard:

In 2011, Cathy Pohl and I [Richard Carstensen] received a drive with 22,000 scanned air photos taken by the Navy in 1948. For the first time, cartographers and researchers in Southeast Alaska could efficiently access this extraordinary collection, studying natural and anthropogenic change in photos spanning 60 years. To celebrate, I created this 35-minute narrated slideshow comparing the 30-or-so Southeast communities, then and now.

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Surficial Geology Map

From Richard Carstensen:
Here’s a surficial geology map for the Juneau area. I used most of the geologic surface types of R.D. Miller, USGS, 1972, Some types were collapsed into broader categories: especially the many varieties of colluvial and raised-marine landforms. On the other hand, unit boundaries have been considerably adjusted and fine-tuned from 2013 DEM-generated bare-earth. Miller’s original map is available as a pdf from ADNR.
Zoom with your mouse roller. Click on any of the color coded units for a pop-up listing landform type, generating agent, and geologic age. For a legend, open >>, upper left. To view this map in ArcGISonline, select view larger map.

 

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The Nature of Southeast Alaska

It’s a little unorthodox for authors to review their own books, so I’ll defer on this first one. But it is probably the best place to start, for newbies or aficionados, in a literary exploration of the Alaskan rain forest. Below is a peek inside the introductory pages.