Colonel William A. Phillips – Department of Oklahoma

The Annisquam River is a tidal, salt-water estuary in the Annisquam neighborhood of Gloucester, Massachusetts, connecting Annisquam Harbor on the north to Gloucester Harbor on the south. The segment between Gloucester Harbor and the Newburyport/Rockport Line bridge is also known as the Blynman Canal.

The estuary is about 4.5 miles (7.2 km) long, navigable, and open to the ocean at both ends. Its surface area is 1.9 square miles (4.9 km²). The name "Annisquam" comes from an Algonquian term meaning "top of the rock, containing <wanashque>, "on top of", and <-ompsk>, "rock".^[1] The first European settlement in Annisquam was established in 1631. The river was dredged by the United States Army Corps of Engineers in 1965 to create a channel some 8 feet (2.4 m) deep, and 60 to 200 feet (18 to 61 m) wide. Annisquam Harbor Light stands on the east, Cape Ann, side of the north entrance to the river.

There are only three fixed crossings of the river: Massachusetts Route 128, the Rockport Branch of the MBTA Newburyport/Rockport Line, and Western Avenue (Massachusetts Route 127).

There are strong tidal currents in the river, and unusually the current flows in opposite directions at the two ends.^[2]

References

^ Bright, William (2004). Native American placenames of the United States. University of Oklahoma Press. p. 41. ISBN 978-0-8061-3598-4.
^ Tides and Currents ^{[dead link]}

"Gloucester Harbor and Annisquam River". U.S. Army Corps of Engineers. Archived from the original on August 20, 2010. Retrieved December 24, 2010.
U.S. Geological Survey Geographic Names Information System: Blynman Canal
U.S. Geological Survey Geographic Names Information System: Annisquam River

Gulf of Maine estuaries

Maine

Bays	Blue Hill Bay Casco Bay Chandler Bay Dennys Bay Englishman Bay Frenchman Bay Harrington Bay Machias Bay Maquoit Bay Merrymeeting Bay Muscongus Bay Narraguagus Bay Passamaquoddy Bay Penobscot Bay Pleasant Bay Saco Bay Wohoa Bay
River mouths	Batson River Benjamin River Cape Neddick River Damariscotta River Johns River Jordan River Josias River Kennebunk River Little River (Boothbay) Little River (Drakes Island) Little River (Georgetown) Little River (Goosefare Bay) Little River (York) Morse River Mousam River Ogunquit River Pemaquid River Piscataqua River Sheepscot River Sprague River Webhannet River York River

Massachusetts

Bays	Cape Cod Bay Massachusetts Bay
River mouths	Annisquam River Eagle Hill River Egypt River Ipswich River Jericho Creek Merrimack River Roger Island River Rowley River Skug River

New Brunswick

Bays	Bay of Fundy Chignecto Bay Cumberland Basin Passamaquoddy Bay Shepody Bay
River mouths	Big Salmon River Quiddy River Saint John River

New Hampshire

River mouths	Blackwater River Hampton River Piscataqua River

Nova Scotia

Bays	Bay of Fundy Annapolis Basin Cobequid Bay Cumberland Basin Minas Basin St. Marys Bay
River mouths	Tusket River

Rivers of Massachusetts by drainage system

Atlantic Ocean

Buzzards Bay	Acushnet River Agawam River Back River Copicut River Crooked River Mattapoisett River Nasketucket River Paskamanset River Pocasset River Sippican River Slocums River Wankinco River Westport River Weweantic River
Nantucket Sound	Bass River Bumps River Childs River Coonamesset River Mashpee River Mitchell River Oyster Pond River Popponesset Creek Quashnet River Santuit River
Others	Tiasquam River

Gulf of Maine

Cape Cod Bay	Bluefish River Eel River Herring River Jones River Little Pamet River Pamet River Town Brook
Massachusetts Bay	Aberjona River Alewife Brook Canton River Charles River Chelsea Creek Cochato River Fore River Fresh River Indian Head River Malden River Millers River Monatiquot River Muddy River Mystic River Neponset River North River Saugus River Stony Brook (Boston) Stony Brook (Waltham) Stop River Weir River Weymouth Back River
Merrimack River Watershed	Artichoke River Assabet River Back River Beaver Brook Cochichewick River Concord River Little River Merrimack River Nashua River Nissitissit River North Nashua River Phillips Brook Powwow River Quinapoxet River Salmon Brook Shawsheen River Souhegan River South Branch Souhegan River South Nashua River Spicket River Squannacook River Stillwater River Sudbury River Trout Brook Vine Brook Whitman River
Others	Annisquam River Blackwater River Eagle Hill River Egypt River Ipswich River Jericho Creek Roger Island River Rowley River Skug River

Long Island Sound

Connecticut River Watershed	Burnshirt River Chapel Brook Chicopee River Connecticut River Cranberry River Deerfield River East Brookfield River Farmington River Fall River Five Mile River Green River Hubbard River Manhan River Mill River (Northampton) Mill River (Springfield) Millers River Mirey Brook North Branch Millers River North Branch Westfield River North River Otter River Quaboag River Scantic River Seven Mile River Tarbell Brook Ware River Westfield River
Housatonic River Watershed	Housatonic River Konkapot River Schenob Brook Umpachene River
Thames River Watershed	French River Quinebaug River

Narragansett Bay

Mount Hope Bay (Taunton River Watershed)	Assonet River Canoe River Cedar Swamp River Cocasset River Cotley River Forge River Hockomock River Matfield River Mill River Nemasket River Poor Meadow Brook Quequechan River Rumford River Salisbury Plain River Satucket River Segreganset River Shumatuscacant River Snake River Taunton River Three Mile River Town River Wading River Winnetuxet River
Providence River Watershed	Abbott Run Blackstone River Bungay River Chockalog River Mill River Mumford River Peters River Quinsigamond River Sevenmile River Tannery River Ten Mile River West River Wilde River
Others	Barrington River Cole River Coles Brook Kickamuit River Lees River Palmer River Runnins River

Upper New York Bay

Hudson River Watershed	Hoosic River Kinderhook Creek

Coastal waterbodies of Massachusetts
Bays	Buzzards Bay Cape Cod Bay Dorchester Bay Duxbury Bay Hingham Bay Massachusetts Bay Mount Hope Bay Nahant Bay Narragansett Bay Plymouth Bay Popponesset Bay Quincy Bay Waquoit Bay
Channels	Broad Sound North Entrance Channel Canapitsit Channel Fort Point Channel Hypocrite Channel Salem Channel South Channel
Coves	Cat Cove Juniper Cove Orleans Cove Warren Cove
Harbors	Barnstable Harbor Boston Harbor East Harbor Hyannis Harbor Marblehead Harbor Plymouth Harbor Port of New Bedford Provincetown Harbor Rock Harbor Salem Harbor
River mouths	Annisquam River Back River Blackwater River Bass River Eagle Hill River Egypt River Fore River Ipswich River Jericho Creek Merrimack River Mitchell River Oyster Pond River Quashnet River Roger Island River Rowley River Skug River Tiasquam River Weir River
Sounds	Broad Sound Nantucket Sound Vineyard Sound
Straits	Quick's Hole Robinson's Hole Woods Hole

42°39′18″N 70°41′8″W / 42.65500°N 70.68556°W / 42.65500; -70.68556

source: https://en.wikipedia.org/wiki/Annisquam_River