This week's survey of the Sierra snowpack found the state's "frozen reservoir" bursting with water content -- 165 percent of normal for this time of year. Scientists have been keeping a close eye on the mountains for a long time, but as California's climate evolves, they're looking for ways to collect more and better data. Reporter: Sasha Khokha Trying to interview guys who wear backcountry skis to work can be tough…especially when trudging behind on snowshoes with a pack full of recording equipment. But my visit to the Southern Sierra Critical Zone Observatory was worth the slog.