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In geography, an arm is a narrow extension, inlet, or smaller reach, of water flowing out from a much larger body of water, such as an ocean, a sea, or a lake. Although different geographically, a sound or bay may also be called an arm.
Both the tributary and distributary of a river are sometimes called an "arm". By extension, a canal arm is a subsidiary branch of a canal or inland waterway. A number of place names are derived from this term, such as Salmon Arm, Indian Arm and Alice Arm.
The Great Lakes, also called the Great Lakes of North America, are a series of large interconnected freshwater lakes spanning the Canada–United States border. The five lakes are Superior, Michigan, Huron, Erie, and Ontario. The Great Lakes Waterway enables modern travel and shipping by water among the lakes. The lakes connect to the Atlantic Ocean via the Saint Lawrence River, and to the Mississippi River basin through the Illinois Waterway.
The Maumee River is a river running in the United States Midwest from northeastern Indiana into northwestern Ohio and Lake Erie. It is formed at the confluence of the St. Joseph and St. Marys rivers, where Fort Wayne, Indiana has developed, and meanders northeastwardly for 137 miles (220 km) through an agricultural region of glacial moraines before flowing into the Maumee Bay of Lake Erie. The city of Toledo is located at the mouth of the Maumee. The Maumee was designated an Ohio State Scenic River on July 18, 1974. The Maumee watershed is Ohio's breadbasket; it is two-thirds farmland, mostly corn and soybeans. It is the largest watershed of any of the rivers feeding the Great Lakes, and supplies five percent of Lake Erie's water.
The Calumet River is a system of heavily industrialized rivers and canals in the region between the south side of Chicago, Illinois, and the city of Gary, Indiana. Historically, the Little Calumet River and the Grand Calumet River were one, the former flowing west from Indiana into Illinois, then turning back east to its mouth at Lake Michigan at Marquette Park in Gary. Now the system is part of the Chicago Area Waterway System and through the use of locks flows away from Lake Michigan to the Cal-Sag Channel.
Great Slave Lake is the second-largest lake in the Northwest Territories of Canada, the deepest lake in North America at 614 m (2,014 ft), and the tenth-largest lake in the world by area. It is 469 km (291 mi) long and 20 to 203 km wide. It covers an area of 27,200 km2 (10,500 sq mi) in the southern part of the territory. Its given volume ranges from 1,070 km3 (260 cu mi) to 1,580 km3 (380 cu mi) and up to 2,088 km3 (501 cu mi) making it the 10th or 12th largest by volume.
The Schuylkill River is a river in eastern Pennsylvania. It flows for 135 miles (217 km) from Pottsville southeast to Philadelphia, the nation's sixth-largest city, where it joins the Delaware River as one of its largest tributaries.
An inlet is a indentation of a shoreline, such as a small arm, cove, bay, sound, fjord, lagoon or marsh, that leads to an enclosed larger body of water such as a lake, estuary, gulf or marginal sea.
The Great Miami River is a tributary of the Ohio River, approximately 160 miles (260 km) long, in southwestern Ohio and Indiana in the United States. The Great Miami originates at the man-made Indian Lake and flows south through the cities of Sidney, Piqua, Troy, Dayton, Middletown and Hamilton.
The Kootenay River or Kootenai River is a major river of the Northwest Plateau in southeastern British Columbia, Canada, and northern Montana and Idaho in the United States. It is one of the uppermost major tributaries of the Columbia River, the largest North American river that empties into the Pacific Ocean. The Kootenay River runs 781 kilometres (485 mi) from its headwaters in the Kootenay Ranges of the Canadian Rockies, flowing from British Columbia's East Kootenay region into northwestern Montana, then west into the northernmost Idaho Panhandle and returning to British Columbia in the West Kootenay region, where it joins the Columbia at Castlegar.
The Feather River is the principal tributary of the Sacramento River, in the Sacramento Valley of Northern California. The river's main stem is about 73 miles (117 km) long. Its length to its most distant headwater tributary is just over 210 miles (340 km). The main stem Feather River begins in Lake Oroville, where its four long tributary forks join—the South Fork, Middle Fork, North Fork, and West Branch Feather Rivers. These and other tributaries drain part of the northern Sierra Nevada, and the extreme southern Cascades, as well as a small portion of the Sacramento Valley. The total drainage basin is about 6,200 square miles (16,000 km2), with approximately 3,604 square miles (9,330 km2) above Lake Oroville.
Burrard Inlet is a shallow-sided fjord in the northwestern Lower Mainland, British Columbia, Canada. Formed during the last Ice Age, it separates the City of Vancouver and the rest of the lowland Burrard Peninsula to the south from the coastal slopes of the North Shore Mountains, which span West Vancouver and the City and District of North Vancouver to the north.
Indian Lake, also known as North Pond, is a lake located in northern Worcester, Massachusetts. The most recent water quality report from 2023 indicated that "Water Clarity at Indian Lake. Between 6Jun and 5-Jul, Secchi depth readings were high compared to past results at Indian Lake ranging between 6.75 ft and 10.75 ft, indicating clearer water. From mid-July through September, readings ranged between 4.5 ft and 5.25 ft, closer to past observations for summertime in Indian Lake. Secchi depth was in the range considered “Poor” on two occasions late in the season 19-Sep, and 17-Oct. This late season drop in clarity is expected based on past program monitoring results. Figure 4 - Secchi depth was considered "fair" for most of the season with some values in the "good" and "fair" categories. Depths ranged from 2.75-10.75 feet. At both in-lake sites, surface TSS results ranged between 1.5 mg/L and 8.9 mg/L, remaining in the range considered “Excellent” during all sampling events. These results were comparable to those in years past. All but one bottom TSS result from the Northern Site fell below 10 mg/L. As expected, TSS increased as Secchi depth decreased at Indian Lake. L&P rates water clarity at Indian Lake as “Fair” in 2023." The mean and maximum depths are 8 and 15 feet respectively. The bottom is sand and rock. The shoreline is heavily developed with residential dwellings and commercial buildings.
Fort Loudoun Dam is a hydroelectric dam on the Tennessee River in Loudon County, Tennessee, in the southeastern United States. The dam is operated by the Tennessee Valley Authority (TVA), which built the dam in the early 1940s as part of a unified plan to provide electricity and flood control in the Tennessee Valley and create a continuous 652-mile (1,049 km) navigable river channel from Knoxville, Tennessee to Paducah, Kentucky. It is the uppermost of nine TVA dams on the Tennessee River.
The Nechako River arises on the Nechako Plateau east of the Kitimat Ranges of the Coast Mountains of British Columbia, Canada, and flows north toward Fort Fraser, then east to Prince George where it enters the Fraser River. "Nechako" is an anglicization of netʃa koh, its name in the indigenous Carrier language which means "big river".
Brunswick River is an open mature wave dominated barrier estuary, located in the Northern Rivers region of New South Wales, Australia.
The Beaver and Erie Canal, also known as the Erie Extension Canal, was part of the Pennsylvania Canal system and consisted of three sections: the Beaver Division, the Shenango Division, and the Conneaut Division. The canal ran 136 miles (219 km) north–south near the western edge of the state from the Ohio River to Lake Erie through Beaver County, Lawrence County, Mercer County, Crawford County, and Erie County, Pennsylvania.
The New River is a tidal estuary in South Florida, United States. Despite its name, it is not a true natural river, but a channel composed of many tributary canals. The channel is connected to the Everglades through a series of man-made canals. After passing through Fort Lauderdale, the channel connects to the Intracoastal Waterway and Atlantic Ocean at Port Everglades cut. The channel is entirely within Broward County and is composed from the junction of three main canals which originate in the Everglades, splitting off from the Miami Canal. They are the North New River Canal, which flows south from Lake Okeechobee along the east side of U.S. 27 and then east along the north side of State Road 84 / Interstate 595; the South New River Canal, which flows east from the Miami Canal along the north side of Griffin Road and the south side of Orange Drive; and a canal which flows east along the south side of Sunrise Boulevard. The Henry E. Kinney Tunnel in downtown Fort Lauderdale travels underneath the New River.
Observatory Inlet is an inlet on the North Coast of British Columbia. It is a northward extension of Portland Inlet, other branches of which include the Portland Canal. The entrance of Observatory Inlet, from Portland Inlet, lies between Ramsden Point and Nass Point. Ramsden Point also marks, to the west, the entrance of Portland Canal. Observatory Inlet was named by George Vancouver in 1793, because he set up his observatory on the shore of the inlet, at Salmon Cove, in order to calibrate his chronometers. His two vessels, HMS Discovery and HMS Chatham, stayed in Salmon Cove from July 23 to August 17, 1793. During this time a boat surveying expedition under Vancouver himself explored Behm Canal. Vancouver also named three headlands at the entrance of Observatory Inlet: Maskelyne Point, for Nevil Maskelyne, the Astronomer Royal, Wales Point, for William Wales, the mathematical master who sailed with James Cook, and Ramsden Point, after the famed mathematical instrument-maker Jesse Ramsden.
The Kitsault River is a river on the North Coast of British Columbia, Canada, located at the head of Alice Arm, which is the east arm of Observatory Inlet, which is itself an arm of Portland Inlet. Located at the mouth of the river are the localities of Alice Arm, Kitsault and Gits'oohl, a community of the Nisga'a people which was the Gitzault Indian Reserve No. 24 prior to the Nisga'a Treaty.
Arm River is a river in the Canadian province of Saskatchewan. It is located in the south central part of the province in a region called the Prairie Pothole Region of North America, which extends throughout three Canadian provinces and five U.S. states. It is also within Palliser's Triangle and the Great Plains ecoregion.