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Assabet River

Middlesex County, Massachusetts.

Assabet River midpoint in Marlborough, Massachusetts.

Assabet River ends in Concord, Massachusetts.

118 feet (36 meters)

34.42 miles long (55.40 kilometers)

668931.09 miles (1076540.57 sq kilometers)

About The Assabet River

About The Assabet River, MA

Located 20 miles west of Boston, Massachusetts, in Middlesex County is the Assabet River. This 34.4-mile river originates from the Assabet Reservoir in Westborough, which then flows northeast before merging with the Sudbury River at Egg Rock in Concord. The merging of the two rivers in the area forms the Concord River, a tributary of the Merrimack River. The River has been a part of human settlement in the area for thousands of years, starting with the Nipmuc people. The term Assabet supposedly comes from the Algonquian word for “the place where materials for making fish nets comes from.” Other interpretations of the origins of the River’s name suggest that it came from the incorrect spelling of Elizabeth as well. 

The Assabet River is also a part of the National Wildlife and Scenic River system of the US. The river is considered a wonderful recreational river by the US government. Because of this and the historical and natural significance of the Assabet River, the Organization for the Assabet, Sudbury, and Concord Rivers (OARS) was established to preserve and promote said rivers. OARS is a non-profit organization that ensures the preservation and continued growth of the wildlife and water quality of the three rivers. This is because of the threat posed by industrial pollution and the building of dams in the river. 

Assabet River Fishing Description

All About Fishing in the Assabet River, MA

With its status as a premier recreational river, it’s no surprise that the Assabet River has a lot to offer for visiting anglers. Largemouth bass, common carp, chain pickerel, white perch, and channel catfish are just a few of the fish waiting in its waters. Due to the many intersecting bodies of water in the area, you can find a wide variety of fish swimming in the river. This means that no fishing trip is the same as the previous one, as each trip brings a different catch. The Assabet Reservoir’s swampy waters and remaining timber are a perfect spot to begin looking for fish in the area, as they mostly stay there for protection. 

Speaking of which, good fishing spots in the Assabet include the A1/Nichols impoundment at Westborough, the former Candle Factory at the Wachusett Aqueduct in Marlborough, at Puffer Pond’s two fishing piers, and behind the Hudson Fire Station. Fishing via canoeing allows anglers to visit the various towns that the river flows on and catch different types of gamefish. Other popular fishing techniques include fly fishing, surfcasting, drift fishing, and trolling. Starting early on your fishing trip here allows you to not only take your time fishing but also reward you with plenty of trout to catch. It is also recommended that anglers practice catch and release when visiting the area to aid in stocking efforts of brown trout in the river. 

If it’s your first time visiting the Assabet, there are guides and shops in the area that you can visit to get acquainted with the area first. They could assist you in finding the perfect fishing spots in the area, as well as which gear to bring. Also, be sure to check the fishing regulations where you plan to fish to avoid any sort of trouble. 

Assabet River Seasonal & Other Description

Fishing Seasonality

Fishing in the Assabet River is an all-year-round activity. The best months to visit the Assabet are from spring to early fall, around April to September, as this is when fish are at their most common in the river. During these times, fish are also more active and are more likely to bite your bait. The best times to go fishing in the river are during the early morning and early evening.  If you’re planning on visiting during the winter, there are areas in the river where you can practice ice fishing, though there are also areas where it is prohibited. Just remember to always check the ice before making your ice fishing hole and ensure it is stable enough to hold you as well. 

Temperature and Optimal Seasons

Fishing Seasonality

Fishing in the Assabet River is an all-year-round activity. The best months to visit the Assabet are from spring to early fall, around April to September, as this is when fish are at their most common in the river. During these times, fish are also more active and are more likely to bite your bait. The best times to go fishing in the river are during the early morning and early evening.  If you’re planning on visiting during the winter, there are areas in the river where you can practice ice fishing, though there are also areas where it is prohibited. Just remember to always check the ice before making your ice fishing hole and ensure it is stable enough to hold you as well. 

Assabet River Weather Forecast

Mon

77°F

Clouds

Highs

77

Feels 77

Winds

3mph

Humidity

57

03:08

05:34

Assabet River Fish Species

All About Fishing in the Assabet River, MA

With its status as a premier recreational river, it’s no surprise that the Assabet River has a lot to offer for visiting anglers. Largemouth bass, common carp, chain pickerel, white perch, and channel catfish are just a few of the fish waiting in its waters. Due to the many intersecting bodies of water in the area, you can find a wide variety of fish swimming in the river. This means that no fishing trip is the same as the previous one, as each trip brings a different catch. The Assabet Reservoir’s swampy waters and remaining timber are a perfect spot to begin looking for fish in the area, as they mostly stay there for protection. 

Speaking of which, good fishing spots in the Assabet include the A1/Nichols impoundment at Westborough, the former Candle Factory at the Wachusett Aqueduct in Marlborough, at Puffer Pond’s two fishing piers, and behind the Hudson Fire Station. Fishing via canoeing allows anglers to visit the various towns that the river flows on and catch different types of gamefish. Other popular fishing techniques include fly fishing, surfcasting, drift fishing, and trolling. Starting early on your fishing trip here allows you to not only take your time fishing but also reward you with plenty of trout to catch. It is also recommended that anglers practice catch and release when visiting the area to aid in stocking efforts of brown trout in the river. 

If it’s your first time visiting the Assabet, there are guides and shops in the area that you can visit to get acquainted with the area first. They could assist you in finding the perfect fishing spots in the area, as well as which gear to bring. Also, be sure to check the fishing regulations where you plan to fish to avoid any sort of trouble. 

Common Carp

Habitat: River, Lake, Backcountry

Weight: 5 - 100 Pounds

Length: 16" - 47"

Chain Pickerel

Habitat: Lake, River, Pond, Bogs, Swamps

Weight: 3 - 5 Pounds

Length: 14" - 39"

Largemouth Bass

Habitat: Lake, Pond, Rivers

Weight: 2 - 22 Pounds

Length: 15" - 32"

Channel Catfish

Habitat: Rivers, Tidal Mouths, Bends, Wrecks

Weight: 2 - 4 Pounds

Length: 15" - 25"