Great Bear Lake On A Map

Great Bear Lake,a vast and remote body of water nestled within the Northwest Territories of Canada, commands attention not only for its immense size but also for its unique geographical position and ecological significance. Located at approximately 65.5°N latitude and 118.5°W longitude, this immense lake forms a critical part of the Canadian Shield landscape, its presence easily discernible on any detailed map of the region. Understanding its location and characteristics requires examining the lake through the lens of cartography, geography, and environmental science. This article delves into the significance of Great Bear Lake and provides clear guidance on locating it on various types of maps.

Introduction: The Significance of Great Bear Lake

Great Bear Lake (Gwich'in: Sāthān) stands as the fourth-largest lake entirely within Canada and the eighth-largest in the world by surface area. Its sheer scale is staggering: stretching approximately 320 kilometers (200 miles) in length and reaching a maximum width of 175 kilometers (109 miles), it covers an area of roughly 31,000 square kilometers (12,000 square miles). This immense body of water sits within the Arctic Circle, making it a significant feature in the subarctic and boreal forest ecosystems of the Northwest Territories. Its location on a map is defined by its position north of the 65th parallel, bordered by the Northwest Territories to the south and east, and the territory of Nunavut to the north. Great Bear Lake is not just a geographical feature; it's a lifeline for the indigenous communities surrounding it, particularly the Sahtu Dene, who have inhabited its shores for millennia. Its presence on a map highlights the vast, sparsely populated wilderness that characterizes northern Canada, offering a stark contrast to the more densely populated southern regions.

Steps: Locating Great Bear Lake on a Map

Locating Great Bear Lake on a map, whether physical or digital, is a straightforward process once you understand its key geographical markers:

1. Identify the Canadian Northwest Territories: Begin by finding the Northwest Territories (NWT) on your map. This vast territory occupies the central and eastern part of northern Canada, bordered by Yukon to the west, Nunavut to the east, and the provinces of British Columbia, Alberta, and Saskatchewan to the south.
2. Focus on the Central/Northern NWT: Great Bear Lake is situated almost centrally within the NWT, but significantly further north than most other major lakes in the territory. Look towards the northern part of the NWT, roughly midway between the Mackenzie River Delta to the east and the Arctic Ocean coastline to the north.
3. Recognize the Lake's Shape and Size: On detailed topographic or satellite maps, Great Bear Lake appears as a large, roughly oval-shaped body of water. Its immense size is a key identifier. Look for a large, dark blue area dominating a significant portion of the map's central/northern section. Its elongated form, stretching northwest-southeast, is distinctive.
4. Use Coordinates (If Available): If your map provides latitude and longitude lines, locate the coordinates 65.5°N, 118.5°W. This specific point lies near the southeastern shore of the lake, near the community of Deline. Placing your finger at this intersection should bring you close to the lake's edge.
5. Check Map Legends and Labels: Ensure your map includes a legend and place names. Look for "Great Bear Lake" clearly labeled on the lake itself or along its shoreline. Maps specifically dedicated to the NWT or the Canadian Arctic will have it prominently featured.
6. Digital Map Navigation: On digital maps (Google Maps, specialized GIS platforms, etc.), simply type "Great Bear Lake, Northwest Territories, Canada" into the search bar. The map interface will automatically zoom to the correct location, displaying the lake's shape and surrounding geography in detail. Zooming out to show the broader NWT context first helps confirm you've found the correct lake.

Scientific Explanation: The Geography and Hydrology of Great Bear Lake

The formation and characteristics of Great Bear Lake are intrinsically linked to the ancient geology of the Canadian Shield. This vast geological formation, composed primarily of Precambrian igneous and metamorphic rocks billions of years old, forms the bedrock beneath much of northern Canada. The lake occupies a basin carved out by glacial activity during the last Ice Age. As massive ice sheets advanced and retreated, they scoured the landscape, gouging out deep depressions that later filled with water as the ice melted, creating the lake basin.

Great Bear Lake is a subglacial lake in the sense that its basin was significantly modified by ice, but it is not a subglacial lake like those found under the Antarctic ice sheet. It is a large, deep, oligotrophic (nutrient-poor) lake with a relatively simple, open basin structure. Its depth varies significantly across its expanse. The lake's maximum depth is approximately 446 meters (1,463 feet), found in its central basin. The average depth is around 136 meters (446 feet). This significant depth, combined with its location in a cold climate, results in a unique thermal structure. The lake typically stratifies in summer, with a warm, well-mixed upper layer (epilimnion) and a cold, stagnant deep layer (hypolimnion). Winter brings complete ice cover, with the water beneath remaining cold but not freezing solid due to its depth and salinity.

The hydrology of Great Bear Lake is characterized by its isolation. It has no significant inflows or outflows that connect it to major river systems. Instead, it is primarily fed by numerous small, glacial meltwater streams and precipitation. Its outflow is entirely through the Great Bear River (also known as the Great Bear River), which flows northeastward from the lake's northwestern shore into the Great Bear Lake River, eventually emptying into the Mackenzie River system and ultimately the Arctic Ocean. This isolated drainage pattern means the lake's water chemistry is relatively stable, influenced mainly by local precipitation, glacial inputs, and limited biological activity.

FAQ: Common Questions About Great Bear Lake

• Q: Is Great Bear Lake frozen year-round?
  • A: No, Great Bear Lake is ice-covered for approximately 8-9 months of the year. It typically freezes over in late October or November and thaws completely, becoming ice-free, around late June or early July. This seasonal ice cover is a defining characteristic of the Arctic environment.
• Q: Why is it called "Great Bear" Lake?
  • A: The lake's name originates from the indigenous Gwich'in people who have lived in the region for millennia. "Sāthān" or "Great Bear" reflects the cultural and spiritual significance of the bear within their traditions and the lake's perceived size and power.
• Q: What is the significance of Great Bear Lake to indigenous communities?
  • A: Great Bear Lake is the ancestral homeland of the Sahtú Dene (also known as the Sahtu Dene and Métis). It provides essential resources for hunting, fishing, and traditional activities. Communities like Deline (Tóndéè) are situated on its shores. The lake holds immense cultural, spiritual, and historical importance, forming the core of the Sahtú Dene's identity and connection to the land.
• Q: Is Great Bear Lake accessible for tourism?
  • A: Access is extremely limited and challenging. There are no major roads leading

to the lake, and transportation relies heavily on air and water. While tourism is present, it is primarily focused on adventure travel, wilderness expeditions, and cultural tourism centered around the Sahtú Dene communities. Activities include guided fishing trips, canoeing, kayaking, and opportunities to learn about the region's history and culture. Due to the remote location and fragile environment, responsible tourism practices are crucial to minimize impact.

The ecological health of Great Bear Lake is a constant concern, particularly in the face of climate change. Rising temperatures are accelerating ice melt, altering water stratification patterns, and impacting aquatic ecosystems. Changes in precipitation patterns can affect water levels and nutrient inputs. Furthermore, increased human activity, including resource extraction and potential shipping traffic, poses threats to the lake's pristine environment. Monitoring programs are actively tracking these changes, and conservation efforts are underway to protect the lake's biodiversity and ecological integrity. These efforts involve collaborating with local communities, researchers, and government agencies to implement sustainable management practices.

Great Bear Lake represents a remarkable natural wonder, a testament to the power and resilience of the Arctic environment. Its immense size, unique hydrological characteristics, and cultural significance make it a vital resource and a place of profound importance. While facing challenges from a changing climate and human activity, the lake remains a source of wonder, sustenance, and cultural identity for the Sahtú Dene people. Continued research, responsible tourism, and proactive conservation efforts are essential to ensure the long-term health and preservation of this iconic Arctic lake for generations to come. The story of Great Bear Lake is not just about a body of water; it is a story interwoven with the history, culture, and future of the Arctic and its people.