Newboro Lake, Ontario, Canada

Lake Locations:

Canada - Ontario -

Also known as:  Mud Lake, Rideau Lakes

Newboro Lake, in Ontario’s Rideau Lakes Region is synonymous with water fun. The 4500-acre lake is home to cottages and fishing camps, islands large and small, and over 20 miles of wooded shoreline. Although a natural lake, the water level was raised over five feet when the Narrows Lock and Dam was constructed on neighboring Upper Rideau Lake. Long a fisherman’s paradise, the lake has hosted many fish camps and vacation cottages over the past 150 years. This continues today, with many cottages gracing the shoreline of an island or nestled between the native trees on the bank. As the Rideau Waterway continues to draw boating visitors, Newboro Lake is introduced to new generations of lakelubbers who yearn to call Newboro Lake home.

The town of Newboro is designated the ‘Home Port of the Rideau’. It’s an apt designation, as the canal next to the town proved to be its most difficult engineering feat; Newboro is also the watershed divide of the new canal system. Newboro Lake represents the head of the Cataraqui watershed, with all water draining south to Lake Ontario. Points north are included in the Rideau watershed and drain to the Rideau River leading to the Ottawa River. Entirely enclosed within the Frontenac Arch Biosphere Reserve, the landforms around Newboro Lake are a study in contrasts: exposed granite rock faces give way to lowlands that are underwater part of the year. The diverse geology encourages a wide variety of wildlife, both year-round and seasonally. The many bays, inlets and coves invite the canoe or kayak enthusiast to explore. Fishermen haunt the margins of islands and shorelines for smallmouth bass, pike, pickerel, rock bass, pumpkinseed, bluegill, black crappie, yellow perch, rainbow smelt, lake chub, and particularly largemouth bass. Although the lakes of the Rideau Waterway are extremely clean, those intending to eat fish caught here on a frequent basis should check local fish advisories.

All types of watersports are enjoyed on Newboro Lake: sailing, pontooning, motor boating, jet skiing, waterskiing and wakeboarding. Swimmers find optimum bathing opportunities from private docks, campgrounds and town beaches. Two large bays on Newboro Lake are permanently off-limits to fishing as they are fish spawning sanctuaries. Those with canoes or kayaks often explore these bays and paddle the shallow channels to Pollywog and Loon Lakes from the west end of Newboro Lake. In winter, skating on the lake and ice fishing attract the most visitors.

Waterway boaters enter Newboro Lake either from Clear Lake to the south via a narrow channel, or the north from Upper Rideau Lake via the Newboro Lock. Originally called ‘the isthmus’, the Newboro channel proved the most difficult leg of the Rideau Canal construction. When Colonel By, the British officer charged with developing the canal, encountered both dense bedrock and epidemics of malaria among laborers, he was stymied for many months. After solving the problem by damming Rideau Lake to raise the water level, the canal system opened in 1832. The lock station offers boat camping, picnic facilities, phone and bathroom facilities. Newboro Lock Station also features one of the four blockhouses built for the defense of the Rideau Canal. The nearby Presbyterian cemetery holds the bodies of some of those who died of malaria during the building of the canal. The lock, as are all Rideau Waterway locks, is independently operated from the lock station.

The town of Newboro provides all other amenities a boater may need, including fuel, groceries, restaurants and shopping. Newboro also has a public wharf with transient docking. Several public boat launches are located along the shoreline. Newboro is an interesting old town, holding many well-preserved historic buildings, some of which have been re-purposed to serve the tourist trade. A historical walking tour is available. Newboro is home to several tourist and vacation camps and resorts. Although quite a few cottages and resorts are located along the lakeshore, much of the shoreline is still wooded and entirely natural. The lake and the waterway are not the only features attracting outdoor enthusiasts: a wealth of hiking and mountain biking trails and country roads encourage visitors to get outside and experience nature. The area around Newboro Lake is rich in such wildlife as deer, fox, squirrel, rabbit, mice, shrews and voles. Lowland marshes and Newboro Lake shallows often hold great blue herons, osprey, loons and water birds. Both the Rideau Trail and the Cataraqui Trail are available nearby for walking, cross-country skiing or mountain biking. In winter, visitors enjoy snowshoeing and snowmobiling. Less active visitors can choose to see much of the Newboro area from the Rideau Heritage Route along Highways 15 and 42.

Finding vacation rentals at Newboro Lake is usually easy. Visitors can choose from hotels and motels near the cities to resorts, fishing camps, bed-and-breakfasts and private cottages in a wide range of prices, amenities and proximity to the nearest road. Some are remote or must be accessed by boat. Real estate is often available but may take some diligence to seek out. Newboro Lake is an extremely desirable location for a self-catering vacation rental, so early reservations are recommended. Many Ontario families have a tradition of reserving the same cabin year after year for generations. Let this become your tradition too. Visit Newboro Lake soon. You’ll be back year after year!

Things to do at Newboro Lake

  • Vacation Rentals
  • Fishing
  • Ice Fishing
  • Boating
  • Sailing
  • Swimming
  • Beach
  • Canoeing
  • Kayaking
  • Jet Skiing
  • Water Skiing
  • Wakeboarding
  • Camping
  • Campground
  • Picnicking
  • Cabin Rentals
  • Hiking
  • Biking
  • Cross-Country Skiing
  • Snowmobiling
  • Wildlife Viewing
  • Birding
  • Shopping

Fish species found at Newboro Lake

  • Bass
  • Black Bass
  • Black Crappie
  • Bluegill
  • Carp
  • Crappie
  • Largemouth Bass
  • Perch
  • Pickerel
  • Pike
  • Pumpkinseed
  • Smallmouth Bass
  • Smelt
  • Sunfish
  • Yellow Perch

Newboro Lake Photo Gallery

Newboro Lake Statistics & Helpful Links

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Lake Type: Natural Freshwater Lake, Dammed

Water Level Control: Parks Canada

Surface Area: 4,562 acres

Shoreline Length: 22 miles

Normal Elevation (Full Pond): 400 feet

Minimum Elevation (Min Pond): 398 feet

Maximum Elevation (Max Pond): 401 feet

Average Depth: 10 feet

Maximum Depth: 78 feet

Completion Year: 1832

Trophic State: Oligotrophic

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Trophic State | LakeLubbers

Trophic State measures the level of algae and nutrients in a lake.

An oligotrophic lake is very clear (blue in color) and does not support much plant or fish life. A hyper-oligotrophic lake is the clearest of all lakes, and is nearly devoid of plants and fish.

A mesotrophic lake is slightly green and supports a moderate degree of plant and fish life. A lake's most desired trophic state is generally this mid-point - the mesotrophic state.

A eutrophic lake is somewhat murky and supports a large amount of plant and fish life. A hypereutrophic lake is clouded with algae, plant life, and fish life. A eutrophic or hyper-eutrophic lake can be difficult to navigate by boat - and is often an unpleasant place to swim.

The use of phosphorus-rich and nitrogen-rich fertilizer on lawns and golf courses surrounding a lake can cause it to become eutrophic or hypereutrophic.


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Catchment or Drainage Area | LakeLubbers

This is the surrounding area that drains into a lake, including land, rivers and their tributaries. This is also known as the lake's "catchment basin".

Small lakes at the highest peaks of mountains have small drainage areas. The world's oceans have the largest drainage areas.


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Lake-Area Population | LakeLubbers

This is the estimated number of people who live in a house with a view of a lake, plus those who self-describe the lake as their home, for example: "I live at Smith Mountain Lake."


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Water Residence Time | LakeLubbers

This is the estimated time that it takes for an amount of water equal to the entire volume of a lake to flow out of - or evaporate from - the lake.

Residence Time can be as short as a few days for fast-flowing small lakes, and can exceed 100 years for slow-flowing large lakes.


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Completion Year | LakeLubbers

This is the year that a reservoir was first filled to the reservoir's normal elevation - or the year that a natural lake was first dammed. A large reservoir can take more than a year to fill after its dam is first closed.

The Grand Anicut in southern India is generally considered the world's oldest dam that still operates. Grand Anicut was constructed in the second century BC. It now impounds an irrigation network that includes roughly one million acres.

You can find many of the the world's newest reservoirs on LakeLubbers. Many of the world's oldest reservoirs appear on the last page of that list.


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Water Volume | LakeLubbers

This is the estimated volume of water that a lake contains -- measured at the lake's normal elevation. By this measure, the world's largest freshwater lake is Siberia's Lake Baikal.

You can find many of the the world's largest lakes (by water volume) on LakeLubbers.

Water Volume can be measured in acre-feet, in cubic miles, or in cubic kilometers. One acre-foot is the amount of water needed to cover one acre (43,560 square feet) to a depth of one foot. One cubic mile equals 3,379,200 acre-feet. One cubic kilometer equals 810,713 acre-feet.

1 acre-foot is equal to 325,851 US gallons. Siberia's Lake Baikal contains about 6,276,367,740,000,000 gallons of freshwater - nearly 1 million gallons for every living person on earth.

The other - and more widely used - measure of a lake's size is the lake's surface acreage. By that measure, the world's largest freshwater lake is North America's Lake Superior.


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Maximum Depth | LakeLubbers

This is the estimated greatest depth of the water in a lake -- measured at the lake's normal elevation. The world's deepest lake is Siberia's Lake Baikal; that lake's maximum depth is estimated at 5,314 feet.

You can find many of the the world's deepest lakes on LakeLubbers. If you select the last page of that list, you will find the (maximum depth of) the shallowest lakes in our database.


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Average Depth | LakeLubbers

This is the estimated average depth of the water in a lake -- measured at the lake's normal elevation. If the water volume and surface area of a lake are known, an estimate of the lake's average depth can be calculated:

Water volume ÷ Surface Area = Average Depth

Example: 1,000,000 acre-feet ÷ 20,000 acres = 50 feet average depth


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Maximum Elevation | LakeLubbers

This is a lake's highest water level, measured by the lake's surface distance above sea level, that can occur during flooding. A lake's highest possible maximum elevation is usually the top of the lake's dam or spillway.

At lakes that include residential development, government regulations usually forbid the construction of homes below a lake's maximum elevation.


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Minimum Elevation | LakeLubbers

This is a lake's lowest water level, measured by the lake's surface distance above sea level, that can be reasonably expected to occur. Low lake levels can occur due to deliberate seasonal draw downs for irrigation or impending snow melt, reduced water inflows, drought and evaporation, residential or commercial water demands, and hydropower generation.

Some lakes' minimum and maximum elevations are virtually the same. Lakes that generate hydropower may vary by several feet - according to power demand. Lakes whose primary purpose is to prevent flooding can seasonally vary by 100 feet or more.

When some lakes reach their minimum elevation, their boat ramps may not be long enough to permit boat access - and boats docked on shallow parts of the lake may end up on dry ground. In those cases, kayakers and shore-based anglers may be among the few happy recreational users of the lake.


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Normal Elevation | LakeLubbers

This is a lake's normal water level, measured by the lake's surface distance above sea level. For a reservoir, this water level is also known as "full pond" or "full pool".

You can find many of the world's highest-elevated lakes on LakeLubbers. Lakes with the lowest elevations (known by LakeLubbers) are shown on the final page of that list.


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Shoreline Length | LakeLubbers

This is the length of the exterior shoreline around a lake - measured at the lake's normal elevation. The shoreline length can be considerably shorter or longer when lake water levels are lower or higher than normal.

A lake with many coves has a much longer shoreline than a lake of similar surface area that is nearly circular in shape.

When known, the shoreline miles that we report in our statistics include only the lake's exterior shoreline, and exclude the shorelines of islands located within a lake's boundaries. In lakes with many islands, those islands' combined shorelines may exceed a lake's exterior shoreline.

You can find many of the world's longest-shoreline lakes on Lakelubbers.


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Surface Area | LakeLubbers

This is the area (acreage, square kilometers, etc.) of the top surface area of a lake - measured at a lake's normal elevation. The surface area can be considerably smaller or larger when lake levels are lower or higher than normal. North America's Lake Superior is the world's largest freshwater lake by this measure.

The other measure of a lake's size is the lake's water volume. By that measure, the world's largest freshwater lake is Lake Baikal in Siberia.

You can find many of the world's largest lakes (acres) on Lakelubbers. There is no widely-accepted minimum surface area that defines a lake. What Lakelubbers describes as a lake, you might call a pond. The smallest lake that Lakelubbers currently includes is Hawaii's 2-acre Lake Waiau.


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Water Level Control | LakeLubbers

This is the organization that controls water releases or outflows from the lake or reservoir. In the USA, this is often the US Army Corps of Engineers, a power company, a municipal water system, an irrigation district, or a paper manufacturing company. In the case of private or gated lakes, a homeowners' association may be the lake's controlling authority.

Many lakes cross borders, including North America's Great Lakes. The control of such lakes and their coveted freshwater may be amicably shared - or hotly disputed.

"Water wars" continue at many lakes as growing populations and crop irrigation needs compete for the freshwater that lakes contain.


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Lake Type | LakeLubbers

There are 3 basic types of lakes that are currently included on LakeLubbers. 2 types may be dammed or not dammed, producing 5 classifications.

- A Reservoir is a man-made freshwater lake that is usually created by damming rivers.

- A Natural Freshwater Lake occurs naturally - often by glacial activity - and has a salinity of less than 30 parts per thousand. It may be dammed to produce electricity or for other reasons.

- A Natural Saltwater Lake occurs naturally and has a salinity of more than 30 parts per thousand (ppt). It may be dammed.

"Brackish" water may be categorized as freshwater or saltwater, depending on its salt content (salinity). Oligohaline water has less than 15 ppt of salt. Mesohaline water has 15-29 ppt. Polyhaline has 30-335 ppt.


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