I go for a short walk up the trail from the campsite to Sierra View Spring to filter enough water to get me to Mississippi Lake.

I'm not measuring, but I fill my 10-litre water bag about 2/3 full, and fill up my two-litre Camelbak.

There are quite a few leaves decomposing in the spring tub, some of which I remove, and a bit of algae floating on the surface, but the water is reasonably clean and tastes good when filtered.

There is still a trickle of fresh water coming into the spring tub, and a trickling overflow on the other side of the trail attracts a few yellow jackets.