I don't know what you mean by the gauging station. When I fish in W.Groton I ususally launch a canoe at the W.Groton water dept and go up stream. The area I fish wading I acess ofr Shirley Rd. in Townsend.(around where Witches' brook comes in) Downstream from Bertozzi, but before the river Starts to open up in W.Groton. I can do really well in there on a fall afternoon, but the water was so high all year round, I had no luck at all this year.