Furthermore, the Massachusetts Water Resource Authority (MWRA) owns much of the land. The Town of Holden owns over  as the Trout Brook Conservation Area, and the Massachusetts Audubon Society owns several hundred acres in the Wachusett Meadow Wildlife Sanctuary, in addition to other properties within this sub-basin.
The Massachusetts Water Resource Authority (MWRA) controls a substantial amount of land in this area. The Town of Holden manages over  as the Trout Brook Conservation Area, and the Massachusetts Audubon Society owns numerous acres in the Wachusett Meadow Wildlife Sanctuary, along with other properties within this sub-basin.