Upper Portneuf River ADDRESS & CONTACT Address Chesterfield Dam Rd, Bancroft, ID 83217 GPS 42.882773033958, -111.94214613862 Web Visit Our Website Plan My Route Birding area. Song birds, birds of prey, upland birds, water fowl, as well as Sandhill Cranes, Sharp-tail Grouse and Sage Grouse. Local habitat includes farmland, and mixed forest. Visit this site any season but winter. LOCATION ON MAP Plan My Route Home » Things To Do » Birding Areas » Upper Portneuf River NEW SEARCH