Arrowhead Lake is correct for #5. Gaylor Lakes is not correct for #4, but the lake in question is in that general area. Give more clues tomorrow if no correct guesses.
If anybody is wondering, Arrowhead Lake is in the Mammoth Lakes Basin out of Coldwater Creek Campground. The 1.3 mile hike to the lake is definitely worth it as this makes a great day trip to have lunch, fish, explore or just enjoy a swim (summer only!).
Arrowhead Lake is the first lake you come to on the Duck Pass Trail. There is about 635 feet in elevation gain on the way up. At about .8 miles, listen for the sound of rushing water. To your left keep an eye out for an unmarked trail that leads to one of the secret spots on this hike! If you follow the trail to the left you'll see a nice waterfall, a great lunch stop and photo opportunity.
At about 1 mile you will encounter the sign for Arrowhead Lake, to your left. The lake got its name from the giant rock formation that splits the lake. This giant rock formation creates the appearance of an arrowhead, hence the name Arrowhead Lake! This rock is also a local favorite for cliff jumping during the summer.
The Duck Pass Trail continues on to Skelton Lake, Red Lake, Barney Lake and Duck Pass then Duck Lake and beyond if you so choose. You might be surprised that I took my fishing pole on this icy trail with better than half of the lakes I passed were already frozen over late in the season. There is an excellent (unfrozen) Rainbow Trout Lake on a cross-country hike over deep snow with eager trout to take my flies. Maybe Iíll share that gem of a trip someday.