Pond is fed by an Artesian well at 60 gpm. The pond is roughly 5 to 6 foot average depth and the overflow goes out to a drainage to another neighbors pond. Pond is about .10 acres. Pretty neat set up, the Artesian is masked by having it spew its water into a neat little creek he made that's about 4 feet wide and 70 feet long.
The water is 51.5 degrees at the head, 52 degrees entering the pond, and during the worst heat wave we've had, it got to 58 degrees in the shallows.
I have another neighbor, who get this, went down 4 feet and hit an artesian, the head temperature is 45 degrees! This neighbors is only 200 yards from the pond of speaking of right now and I temped both heads with the same thermometer. I never thought it was physically possible to have such cold water well temps in lower MI as 45 degrees.
