This is the long version recorded around 7:45 a.m. to 9:00 a.m. (edited down). Heavy low pass filter applied to remove most highway/road noise which was picked up as a constant low rumble even though about 4 miles away (it’s still there after filtering, but much less irritating). Noise pollution is a real challenge in West Michigan!
Photos from my iPhone just after recording. Four mics, two next to the Beaver dam (very little water flowing through that morning) and the other two on stands about 15 feet and 170 degrees apart:
