Question about Sleepers East Peak

[RoySwkr]

Yea, you're right there's 5 lines but you need 6 to represent 200 feet of elevation.

Sorry I barked :-(

It takes 5 to *represent* 200' but 6 to *guarantee* 200'

What I was trying to say was it's the space between those 5 contours represents only 160 feet. So there's only 4-40 foot map units and the last bit of elevation down to the col needs to be estimated. The sixth contour almost meets, so again I'd estimate it's prominence at 190.

There was quite a discussion of this on the [prominence] group recently as to common rules for determining col depth. Hikers in WA like to use minimum or guaranteed prominence (round cols up and summits down) so they would call it 3881-3719 = 162'. Many of the large online databases use averages so it would be 3881-3700 = 181'. Some Europeans try to estimate each more carefully (as you did) and might say 3881-3690 = 191'.

But the AMC in the past has just counted the full contours (round cols down and summits up?) e.g. Lincoln, PAtN, so if they were consistent they could add NW Sleeper as 3881-3680 = 201'.

And speaking of cheap knock-off maps. Has anyone else noticed that the acme mapper topos aren't as nice as they used to be?

Yes, they get their base maps elsewhere after TopoZone became a fee service