Biological Survey of the Cupsuptic River

Interim Summary Report No. 06-02
Job No. F-102
Cupsuptic River Survey
Interim Summary Report (2001-2005)


The Cupsuptic River, a tributary to Mooselookmeguntic Lake in the Rangeley chain of lakes in Western Maine, provides habitat for wild brook trout (Salvelinus fontinalis) and, to a lesser extent, landlocked salmon (Salmo salar). The lower portion of the river serves as spawning and nursery habitat for Mooselookmeguntic Lake’s salmonid population.

Degradation of the river resulting from timber harvesting and log driving operations over a period of many decades prompted the Department of Inland Fisheries and Wildlife (DIFW) to assess the feasibility of brook trout habitat restoration. In a collaborative project, DIFW and the Rangeley Region Guides and Sportsmen’s Association surveyed the river in 1997. In addition to documenting degraded areas, we conducted a complete biological survey of fisheries habitat, which allowed quantification of the river’s value as fishery habitat. We concluded that sediment transport was filling in pools that provided important adult brook trout habitat. As a result, we constructed grade control structures in 2002 in an effort to arrest the downstream migration of sand and gravel. This report describes construction of the grade control structures and monitoring efforts through 2005.

Written by Forrest Bonney

For more information, please contact:

Forrest Bonney, Regional Fishery Biologist
689 Farmington Road
Strong, Maine 04983-9419
Telephone (207) 778-3322 Ext. 22