Got this back from a biologist regarding local ponds near West Chattam and White Pond.
"The best holdover ponds for Brown Trout on Cape Cod near the Chatham area are Goose Pond in Chatham, Gull Pond in Wellfleet and Cliff and Sheep Ponds in Brewster.
Our native sunfish is the Pumpkinseed Sunfish, Bluegill are found in a fewer number of ponds. Black Crappie is the only crappie species in this area and they are found only in a few Cape ponds, the nearest ponds with some Crappie are in the Wareham area. They are usually large but in small numbers. Most of the trout ponds will have some sunfish but our fertility is limited compared to the Midwest and the ponds on the Cape are kettlehole ponds without a lot of structure to hold sunfish.
White Pond in Chatham is a deep pond and could hold trout but has not been stocked. The fish population is Chain Pickerel, Yellow Perch, Brown Bullhead and most likely Largemouth Bass."