Tuesday, December 12, 2017

December 12, 2017: Hard Rains, Polluted Run-off, and Salmon

For over a century, cities have been developed in ways that interrupt the natural water cycle. Hard surfaces prevent rain from soaking naturally into the soil. Instead stormwater floods through streets, carrying pollution directly to local waterways. For some species of salmon, stormwater can be lethal. Others can handle it, but only briefly or at certain stages of their life. In this feature Martha Baskin checks out an urban creek on a stormy day when salmon had returned to spawn.

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