Kelly Duffie, I appreciate the ID on the plant. I purchased one of those big pond rakes and tossed it until I couldn't do it anymore. The plant does not appear to be connected to the bottom as a swipe of the rake pretty much clears the material from the bottom. I have not seen the plant extend above the water as some of the milfoil pics above would indicate. The underwater pics (bottom left and right) sure look like what I have.
I guess then, the plan will be to measure the inflow and/or outflow some way. Since the pond is about 2 hrs away, it will take a few days before I can make that trip. Thanks for the help and if I need to get any additional info I would appreciate that guidance also.
