High in the San Juan Mountains of southwestern Colorado, nestled among the pine trees of the Uncompahgre National Forest, is a classroom like no other. There are no desks, no chalkboards and no textbooks.
This is snow school, with a curriculum devoted entirely to studying the properties of Colorado’s most precious resource.
Nathan Elder, a water resource engineer, lives and breathes snow. He tracks how much of it falls, where it falls and when it melts. In the world of managing Denver Water’s water supply, snow is everything.
So it was only fitting that Elder headed back to school in February for some higher education. Hosted by the Colorado Center for Snow and Avalanche Studies near the town of Silverton, the course is geared toward water resource managers and avalanche safety experts.
Elder was happy to take a break from his day job at Denver Water to dig into the piles of snow and information offered in this alpine environment.
“It was great to get a firsthand look at the snow, Elder says. “And seeing the boots-on-the-ground science was really rewarding.”
That part about the boots is no metaphor in this giant San Juan classroom. Elder and his fellow snow school students ventured out on snowshoes to learn the power of the sun on snow and the impact of dust.
“Solar energy has a greater impact on melting than does temperature,” he said. “We saw firsthand the difference between snowmelt on south-facing slopes compared to north-facing slopes.”
Dust on snow determines the “albedo,” a measurement of how much the snow absorbs or reflects the energy from the sun. “If there’s a lot of dust, the snow absorbs more energy and melts faster,” Elder says.
To most people, snow is something to be shoveled or skied. But for Elder, snow is the critical piece of creating water supply operating plans.
The course starts with the true beginning of a snowflake by examining meteorological phenomenon such as El Nino, a warm weather phase from Pacific Ocean currents, and La Nina, the cool weather phase. Both produce temperature change and rainfall.
“We studied the jet stream to learn where the moisture comes from that makes Colorado’s snow,” Elder said.
As part of the class, instructors and students dig trenches in the snow and slice it up like a seven-layer cake. Each layer tells a different story about the snowpack.
“When you look at the layers, you can tell if the snow came from a wet storm or a dry storm,” Elder said. “It gives us a better idea of how the snow is going to melt.”
And that’s critical information for water managers because it helps determine the timing of the runoff — the amount of water that flows into Denver Water’s reservoirs — and when the runoff will peak.
For Elder’s water supply team, the more information they have about the expected runoff, the better they can make good decisions about how much water to release from reservoirs, and when.
The students also checked out the automated snow-monitoring sites — called SNOTEL —managed by the Natural Resources Conservation Service. “Seeing the SNOTEL sites firsthand helps me better understand the data they provide and help manage the runoff better,” Elder says.
Going back to class is what experts do, constantly looking to add to their knowledge base.
Elder’s take on snow school? “It was pretty cool, and well worth the trip.”