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Archive for January, 2014

Wendi Goldsmith is the CEO of the Bioengineering Group and has recently published a book, Bioengineering Case Studies with some her colleagues through Springer.  This book includes a number of case studies and highlights several stream bank slope stabilization techniques whereby best practice techniques were used.

The release of this book is timely as this past fall, the Army Corps of Engineers Hydrologic Engineering Center announced in its Fall 2013 newsletter that the bank stability analysis model, BSTEM, will be incorporated into HEC-RAS.  One aspect of BSTEM that sounds intriguing is that it can compare factor of safety values for existing conditions and banks that have been subjected to stabilization methods. Until now, HEC-RAS has only been able to assess scour/incision vertically. With the incorporation of BSTEM, it seems as though lateral erosion can be modeled as well.

Another worthwhile read recently released is the MA Department of Fish & Game Division of Ecological Restoration’s 2013 Annual Report which is focused on the value of restoration and is available as a pdf here.

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Pre and post project photographic monitoring has been around for a while.  I’ve seen some drab appendix tables that list the lat/long and the azimuth for where each photograph was taken. I’ve also seen photographs jammed into an appendix as well. Why not take a more modern approach using the features ArcGIS.com and photo hosting services such as Flickr or PicassaWeb? Assuming you have your lat/long, azimuth and photo filename in Excel, a pretty powerful online map can be made that shows where each photo was taken, the direction of the photo and the photo itself in a map that can be panned and zoomed and presumably have a recent aerial photo basemap.

Here are three ESRI blog posts that can help make such a map:

How to configure pop-ups:
http://blogs.esri.com/esri/arcgis/2013/07/25/custom-attribute-display-pop-ups/

Adding photos from Flickr, PicassaWeb or WindowsLive
http://blogs.esri.com/esri/gisedcom/2011/02/25/map-your-photos-with-arcgis-explorer-online-automating-the-process/

Rotating arrows to show azimuth:
http://blogs.esri.com/esri/arcgis/2014/01/06/rotating-layer-symbols/

If you have an ArcGIS.com organization prescription, then you can take the map you’ve made with all your georeferenced photos, configured pop-ups and arrows showing the photo azimuth and then put that dynamic map into a PowerPoint presentation. Pretty cool!

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