Pond Boss Forums INTRO Questions & Observations developing a spring?

The artesian well is upstream of my pond about 600 feet away and 25 to 30 vertical feet above. The existing well was dug, lined with stone and tapped for drinking water for a house that is long gone. The well is about 4 feet in diameter and has filled in with leaves and generic crap and has not been kept up. The water leaving the spring flows out in a stream of 8 to 10 inches across. I measured the flow by cutting a 5 gallon pail in half the long way to provide a way to flow the water into a v notch cut into the end of the pail. The pail was sunk into the small stream and wedged in place and by using moss and soil, the flow was directed through the pail and through the v. By measuring the distance from the base of the v to the water level the flow can be calculated.