MAINE LAKES Isthmus Pond Penobscot County, ME BE THE FIRST TO WRITE A REVIEW SHARE THIS PAGE Isthmus Pond is located in Penobscot County, Maine. This lake is 18 acres in size. BUY A MAINE FISHING LICENSE. SIZE 18 acres POST A FISHING REPORT BAROMETRICPRESSURE WEATHERINFO WIND MAP& FORECAST SUN/MOONINFO
