How much water’s in the snow? In some U.S. regions, melting from winter snowpack is crucial for filling reservoirs, irrigating crops and providing drinking water. In northern Colorado, for example, communities get 80 percent of their water from snowpack. Knowing the water content of snow helps these communities plan ahead, but the reflective nature of snow makes it hard to measure the depth of a snowpack from space. That’s why NASA is stepping in to create a snow satellite. |