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We have found 1,002 datasets for the keyword "lake major". You can continue exploring the search results in the list below.
Datasets: 104,050
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1,002 Datasets, Page 1 of 101
Freshwater Atlas Lakes
All lake polygons for the province
Fishery resources and habitats in a headwater lake of the Brock River, Northwest Territories - Fisheries data
The study involved sampling during a winter subsistence fishery at Brock Lake in November 2003, and a physical, chemical and biological assessment of the lake in July 2004 and July 2005. Data including physical, chemical and biological variables were published as Roux, M.-J., Harwood, L. A., Illasiak, J., Babaluk, J.A., and de Graff, N. 2011. Fishery resources and habitats in a headwater lake of the Brock River, NT, 2003-2005. Can. Manuscr. Rep. Fish. Aquat. Sci. 2932: viii + 61 p.
Manitoba Regional Health Authorities
RHAs/Health Regions are geographic areas which are used to define populations and catchment areas for the administration and delivery of health services. This file provides RHA boundaries for cartographic and analytical purposes.Within Manitoba there are five Regional Health Authorities (or "RHAs") responsible for the delivery of health services in five specific areas of the province described in the legislation as "health regions." (In practice, the terms "health region" and "RHA" are often used interchangeably to describe these geographic areas.). This file contains boundaries for the health regions for each Regional Health Authority in Manitoba. Fields included (Alias (Field Name): Field description.) RHA Code (RHACODE): Two-digit numeric code which uniquely identifies a specific legislatively defined RHA RHA Name (RHAName): This field contains a simple name for each RHA, suitable for use as a label, in English. Nom de l'office régionale de la santé (RHANomFr): This field contains a simple name for each RHA, suitable for use as a label, in French. RHA Area - total (sq km) (RHAArea): The calculated geodesic area, in square kilometres, of the area within a given RHA's boundaries. RHA Area - excludes major lakes (sq km) (LandArea): The calculated geodesic area, in square kilometres, of the area within a given RHA's boundaries, with the area of major lakes excluded. For population density calculations, we recommend the use of this area value. The following major lakes have been excluded: Lake Winnipeg, Lake Manitoba, Lake Winnipegosis, and Cedar Lake.
Great Bear Lake (Sahtú) Surface water temperature monitoring: 2021 to 2024
PURPOSE:This study is part of a two-decade series of research aimed to provide a comprehensive synthesis of the effects of harvest and environmental change on fisheries in Great Bear Lake. The main objectives are to assess demographic traits and the current status of harvested species, with a focus on evaluating sustainable harvest levels of lake trout, a cold-adapted species with a relatively narrow thermal niche. As part of this research, trends in water quality and primary productivity are monitored to evaluate potential effects of change on fisheries. DESCRIPTION:Great Bear Lake, one of the largest lakes in North America, contains culturally and recreationally important fish species. Great Bear Lake is located in the sub-Arctic and Arctic Circle. As part of a two-decade series of research aimed to provide a comprehensive synthesis of the effects of harvest and environmental change on fisheries in Great Bear Lake, the main objectives of this study are to assess demographic traits and the current status of harvested species, with a focus on evaluating sustainable harvest levels of lake trout, a cold-adapted species with a relatively narrow thermal niche. As part of this research, trends in water quality and primary productivity are monitored to evaluate potential effects of change on fisheries. From 2021 to 2024, surface water temperature data was collected at depths of 0.1 to 1.0 meters using an RBR Maestro3 through partnered community-led and community/Fisheries and Oceans Canada/university partner collaborative sampling. The project has strong community involvement, including youth through the Guardian Program, to facilitate capacity building and community leadership in the long-term monitoring of Great Bear Lake fisheries and the aquatic ecosystem. This data is an extension of baseline data sets on water quality on the lake. These data will contribute to a better understanding cumulative impacts of climate change on the functioning of large northern lake ecosystems and provide a benchmark for monitoring further change. This data will be important for developing effective strategies for maintaining community-led aquatic monitoring and managing natural resources, particularly fish, which are expected to be increasingly important to communities with declines in other country foods such as caribou.We acknowledge the data were collected in the Sahtú Settlement Area and are made publicly available with the agreement of the Délı̨nę Renewable Resources Council (Délı̨nę Ɂehdzo Got’ı̨nę (Renewable Resources Council)). Collaborators include: the Community of Délı̨nę partners (data collection), Délı̨nę Renewable Resource Council, Sahtú Renewable Resource Board, and University of Manitoba. Community of Délı̨nę partners and field workers that participated in data collection include Chris Yukon, Archie Vital, Ted Mackienzo, Daniel Baton, Lloyd Baton, Simon Neyelle, and Stanley Ferdanan.Funding and logistical support was provided by: Northwest Territories Cumulative Impact Monitoring, Sahtú Renewable Resource Board, the Polar Continental Shelf Program and Fisheries and Oceans Canada.
Static-Water-Level Elevation Contours in the Grand Centre, Sand River, Ethel Lake and Muriel Lake Formations, and Empress Formation Unit 1 and 3 in the Cold Lake-Beaver River Drainage Basin (GIS data, line feature)
Alberta Geological Survey partnered with Alberta Environment (AENV) Northern Region to compile and analyze groundwater data in the Cold Lake-Beaver River Drainage Basin. This compilation and analysis assisted AENV and its stakeholders to complete an update of the Beaver River-Cold Lake Water Management Plan. This digital file provides the contours of the hydraulic-head distributions for the Grand Centre, Sand River, Ethel Lake and the Muriel Lake formations, and the Empress Formation Units 1 and 3 based on reported static-water levels from water wells within the study area.
Radionuclide Releases - Elliot Lake closed mine sites / Direct Discharge
This dataset contains the total annual releases of radionuclides released directly to the environment through direct discharge (i.e. releases to water) from the closed mine sites near Elliot Lake, Ontario, Canada.Note that there is no stack emissions for the Elliot Lake.
Projects and Transformative Strategies Referred to the Major Projects Office
In August 2025 the Major Projects Office was launched, with the mandate to advance major projects in Canada and streamline federal regulatory project approval.This dataset was created to provide open access to key information about the projects and transformative strategies that have been referred to the Major Projects Office. This dataset can be layered with other data available on the Open Science and Data Platform. By accessing this data, users can conduct more comprehensive analyses to support evidence-based decision-making and inform regulatory processes including future impact assessments.Please visit the Major Projects Office for more information.
Major Projects Inventory (Economic) - Points
The Major Projects Inventory (MPI), which is published quarterly, lists all major projects that are proposed, planned or underway in British Columbia. These are projects with a capital cost of at least $20 million each within the Lower Mainland and projects valued at $15 million or more in the rest of B.C. This is a point layer. To view the Major Projects Inventory in the BC Economic Atlas [click here]( http://maps.gov.bc.ca/ess/hm/bcea/?catalogLayers=5178)
Hydrokinetic Resource Mapping - Optical Satellite Imagery Analysis of Open Water Regions in Ice-Covered Canadian Rivers
Building on the initial effort (“Database of Open Water Areas in River Ice for Provinces of Manitoba, Ontario, Quebec, and the Maritimes - Potential Locations For River Hydrokinetic Energy Extraction Identified Through Optical Satellite Imager”; weblink: https://search.open.canada.ca/openmap/d9823004-29aa-40e2-aa47-9c54cf88c309), a follow-up research project has led to the publication of this extensive analysis encompassing the entirety of Canada’s major freezing rivers. This work has applied advanced image processing and classification algorithms to the selected images, elevating the classification and analysis to a higher level of accuracy and providing a more comprehensive dataset for exploring river hydrokinetic energy prospects across the country.This dataset identifies open water areas within ice-covered major Canadian rivers, aiming to evaluate potential hydrokinetic resources. The data is derived from high-resolution optical satellite imagery obtained from Landsat and Sentinel satellites corresponding to National Research Council (NRC) 2014 flow data of river reaches with water depths of at least 10 meters and a flow velocity of a minimum of 0.5 meters per second. Using advanced image processing and machine learning algorithms, the dataset efficiently differentiates between ice-covered and open water regions, providing a reliable basis for assessing hydrokinetic energy potential in the identified areas.Disclaimer:This dataset is subject to the following limitations:• Landsat and Sentinel optical satellite images are high-resolution, but they may contain resolution errors, possible distortions, and inaccuracies in depicting on-ground conditions. • Despite advanced image processing and machine learning algorithms, errors or biases may exist. • The dataset's reliability is also influenced by the NRC flow data.Therefore, users should view this dataset as a preliminary assessment tool, not a definitive guide for decision-making or investment in hydrokinetic projects. It is strongly recommended to validate its accuracy and suitability for specific applications through additional research and studies. By accessing and using this dataset, users acknowledge and accept these disclaimers. The providers of this dataset explicitly absolve themselves of any responsibility or liability for any consequences arising from the use, reliance upon, or interpretation of this dataset. Users are advised that their use of the dataset is at their own risk, and they assume full responsibility for any actions or decisions made based on the information contained therein. This disclaimer is in accordance with applicable laws and regulations, and by accessing or utilizing the dataset, users agree to release the providers of this dataset from any legal claims, damages, or liabilities that may arise from such use.
Visual Landscape Inventory - Screenings (Polygons)
Vegetative or non-vegetative objects alongside major roads and highways preventing passers by from seeing the surrounding landscape
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