No water on the Switchbacks. On Sunday, Sep 16th, in the morning, I could not find any water around the 23rd Switchback. Nor is the spring under the rocks near the trail at Trail Camp running. (Some have reported that these sources are there, but they are frozen until late afternoon.) Earlier in the year those are both reliable sources, but not now. If you're going to refill, the highest place you can count on right now is the lake (tarn) near Trail Camp.