"Spring runoff" refers to the flowing of water that occurs during the spring season. It happens when the snow and ice melt, causing the water to run off into rivers, streams, and other bodies of water. Full definition
«If we look at the lowest spring runoff that occurred over late 20th century, how often do we expect to see values lower than that» in the future? (scientificamerican.com)
Variability and trends in spring runoff in the western United States [chapter]. (montanaclimate.org)
Based on a survey of how dams store water, the Lands Council in Washington State predicts that reintroducing beavers to 10,000 miles of suitable habitat in the state could help retain more than 650 trillion gallons of spring runoff, which would slowly be released by the animals» naturally leaky dams. (discovermagazine.com)