Been working on mapping out a very dangerous reservoir in the Adirondack mountains of New York State. Rock shoals and stumps everywhere, water height changes approximately 15 feet in a given year, and little to no cellular service to call for help. Approximately 10 miles long, and a mile wide at its widest section. Fortunately there is a USGS depth gauge on the reservoir with 15 minute data points. I was able to download the data from the their site, and create custom normalized tidal files, that adjusted every data collection to 1680 feet MSL, the top of the range of pool height. Data collection will continue next year to try and complete the job. Thought you would enjoy in the meantime.

KMZ and blog post here: https://sites.google.com/site/stillwaterreservoirnavigation/latest-updates/september-15-2016-depth-map

Cool, looks like a place that eats a few props. :)

Thanks. Pretty much everyone I know there has lost at least a few props. Just a matter of when, not if. Hopefully this will help prevent most in the future.

Nice looking map, agree on the props...would say a lower unit or two as well lol

Thanks! Funny you should say that, because cracking a lower end unit was the final straw that provided the motivation to start this project. That and the mobile navigation app technology had finally reached a point where you could utilize complex data sets while on the water.

Collected another 85 miles of data, for a total of 585 miles thus far. About 15% left to map.

Blog Post

Collected another 107 miles of data, for a total of ~692 miles thus far. About 5% left to map. Once the 2D down image map is complete, the plan is to continue with data collection for a side-scan mosaic of the entire reservoir.

BLOG POST LINK

Another 43.3 miles added. 735 miles total. Blog Post