Lake Zegrze, Masovia, Poland

Lake Locations:

Poland - Central Poland - Masovia -

Also known as:  Lake Zegrzynski, Zegrzynski Reservoir, Zalew Zegrzynskie

Lake Zegrze, or more precisely Zalew Zegrzynski, is one of the largest artificial reservoirs in the Masovian Province of central Poland. The reservoir was formed by a dam constructed in 1963 along the Bug-Narew River. Lake Zegrze collects water from the Bug River, Narew River, and Rzadza River; water flows out of the lake into the Bug-Narew River and the Zeranski Canal. The purpose of the dam is to maintain water levels and provide water for the Warsaw vicinity. The lake is located just north of Warsaw, the capital of Poland, and is a popular getaway for those in search of a relaxing break. All types of water sports are permitted on the lake, the most prominent being sailing, and with a shoreline filled with beaches, marinas, and holiday homes, Lake Zegrze has plenty to offer.

Lake Zegrze is shallow with an average depth of 11 feet, with a maximum depth of 30 feet. Anglers catch an assortment of fish including white and silver bream, carp, roach, pikeperch, pike, perch, zander, and catfish. Catfish flourish in the lake, and some of the best catches have been at the mouths of the Narew, Bug, and Rzadza Rivers. Sailing, canoeing, windsurfing, and boating are just a few of the beloved sports on the lake. Windsurfing and sailing schools offer their knowledge and equipment at several ports along the shore. Rent a yacht and follow one of the water trails that lead to the popular Masurian Lake District. When the water freezes sailboats are replaced by iceboats and ice skaters. This lake is a year-round tourist attraction.

To the north of Lake Zegrze is the Narew River, an attraction that offers all sorts of activities. Its surroundings are sometimes called the “Polish Amazon,” with the Narwianski National Park formed in 1996. With flat banks, numerous meanders, and alternate riverbeds, some 200 species of birds call this place home. Storks abound in the region, but you may also see glimpses of Polish horses, elk, and beaver. Another extraordinary park is the Bialowieski National Park. The park is the oldest in Poland and is the most valuable, natural area in the lowlands of Europe. The park offers hiking and biking trails and tours through the evergreens and broad-leaved trees. The forest is among the World Biosphere Reserves in Poland and is home to remarkable animal life including rare and interesting mammals. Dating back to 8,000 BC this park is a rich part of history and an important scientific and educational center with a museum.

The city of Warsaw is not far from Lake Zegrze and is a popular tourist attraction. The town is complete with quaint villages and picturesque manors as well as an ancient and primeval forest. Spend the day on a guided tour through the Old Town and see medieval structures, or visit the New Town and have a taste of authentic Polish cuisine. The Kampinoski National Forest is comprised of sand dunes and primeval pines, some over 200 years old. Only Warsaw can boast so many species living in the forest, close to such a large human population. Animals such as lynx, roe deer, wild boar, badger, and fox see the forest as a safe haven. The varieties of soil as well as variable water conditions are responsible for a wide diversity of plant life. The territory of the park has close ties with history as many battles were fought throughout the terrain.

You don’t need to travel far to see an extraordinary city. Pultusk sits just north of Lake Zegrze and has a clean, natural environment with no industries polluting it. The town has numerous relics of the past, beautiful landscapes, interesting history, and plenty of shops and hotels. Pultusk has the longest marketplace in Europe at over 1300 feet long. Take your time shopping, or take in the views on an enchanting horse-drawn carriage ride.

Lake Zegrze has plenty of vacation rentals and real estate properties for sale. Take your friends and family on a trip to Lake Zegrze; you won’t regret it.

Things to do at Lake Zegrze

  • Vacation Rentals
  • Fishing
  • Boating
  • Sailing
  • Swimming
  • Beach
  • Canoeing
  • Hiking
  • Ice Skating
  • Biking
  • Horseback Riding
  • Wildlife Viewing
  • Birding
  • National Park
  • National Forest
  • Museum
  • Shopping

Fish species found at Lake Zegrze

  • Carp
  • Catfish
  • Perch
  • Pike
  • Pike Perch
  • Roach
  • Zander

Lake Zegrze Photo Gallery

Lake Zegrze Statistics & Helpful Links

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Lake Type: Artificial Reservoir, Dammed

Surface Area: 8,154 acres

Normal Elevation (Full Pond): 361 feet

Average Depth: 11 feet

Maximum Depth: 30 feet

Water Volume: 89,694 acre-feet

Completion Year: 1963

Water Residence Time: 15 days

Trophic State: Eutrophic

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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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