This was recorded on a cold spring night beside rapids on the swiftly flowing North Fork of the Salmon River in Klamath National Forest, Siskiyou County, California.

The Salmon River is part of the National Wild and Scenic Rivers System and is free of dams and significant flow diversions of any sort. The river and its watershed are located entirely with the remote and rugged Klamath Mountains in far northern California.

I strapped the mic to an Alder tree such that it was overhanging the water at the river's edge, which had nothing to do with the fact that I forgot to bring my tripod, I swear.