By using the satellite generated google Maps & the Bing map, weather app Wundermap on my IPad to view the Yukon River from Whitehorse, Yukon Territory to Eagle, Alaska, I've found a major help in navigating the river. At first my goal was to use the google sat map in conjunction with our "Yukon Channel Charts" by Bruce Batchelor or other river guide maps. The one by Bruce, we used in 2003 & I seriously doubt our trip then would have been successful without it. I hoped the sat view would allow us to make additional notes on the chart book to help navigate the more difficult parts of the river.
The first thing I noticed in doing this is the google maps of this area are much inferior to the Bing Maps, which was somewhat of a surprise. Using the Wundermap weather app, sparked a memory, that my Navionics IPad charts also use the Bing Map & I had found them also superior to Google. When I used the Navionics chart on the IPad here at home to look over the Yukon River, I was surprised to see the exact same images as I had been studying on the Wundermap app. Some areas are very detailed & they include the ones, I need the most in the many braided river sections. Other section have much less detail, some cloud cover or the river partially ice covered, but the amazing thing to me is the details are all good for knowing where the boat is on the river & for the most part giving advance visual notice in time to select the channel or even the best position in the channel. Of course with the changing river it's not as accurate as the chart would normally be on a ocean or lake, but still an extremely useful tool to be used with the written guide & our eyes. Our experience of often boating in areas where the charts positioning of the boat on it being inaccurate, but still helpful will be very useful in using it now on the river. I've rarely found a detail discrepancy in the electronic chart & the satellite photos should be right on if detail is good, but often I have seen a temporary loss of satellite signal from various causes & in outlying areas a misplace of the boat on the chart that is at least uniform, so one can figure out the error & know where the boat actually is on the chart. With the Yukon River definitely being an outlying area from the normal chart use, I suspect this will be the most difficult aspect of using it there.
On our successful 2003 Yukon River trip, which was practically all done at planing speed, due to limited time away from work, the most difficult part of navigating involved us continuously trying to figure out exactly where we were on the river, so we could successfully use the river guide for channel selection & boat placement in it. That trip didn't include the more difficult braided section down river closer to Dawson, so with this trip being planned for that sections inclusion, I was very pleased to see the satellite chart detail on my Navionics App & will now be checking to see if the Garmin North America rivers & lakes card on my Garmin 545 also has this satellite image detail to use. I do know my older Garmin 276C Canada topographic card will be useful too.