I hope you brought along. And this is one of the few Sierra hikes where we would delight in having a bottle of a good red wine along. Normally, wine and hiking don't mix, but this could be one of those wonderful exceptions. Maybe even a tablecloth for a rock picnic table would make for one of those magic mountain moments. Plus some good Brie and a loaf of French bread.
Round Lake is probably the easier trek and a much bigger lake.
If not, time to head for home. Meiss Lake is about 8,200 feet elevation. Don't be surprised to run into horses on this trail and remember they have the right of way. And as you cross that stream you're crossing the headwaters of the Upper Truckee. It's a gem posing as a lake, and now you've been able to tuck it away in your hiking scrapbook.