To better understand patterns of temporal and spatial variation of fish assemblages in offshore waters of Lake Winnipeg (Manitoba, Canada), pelagic trawl tows were conducted at lakewide monitoring stations since 2002. Trawl samples collected during spring, summer, and fall from the south basin, channel, and north basin were used to study effects of season and geographic region within the lake on species biomass estimates.

Community Areas are a standard analytical and service delivery geography for the city of Winnipeg and the Winnipeg Regional Health Authority.Community Areas are a standard analytical and service delivery geography for the city of Winnipeg and the Winnipeg Regional Health Authority.  The Community Areas geographic areas were developed by the Community Data Network (now more commonly referred to as the Winnipeg Community Data Consortium), with input from the WRHA, Manitoba Health, the City of Winnipeg, and other stakeholders. Community areas can be defined to either include or exclude the municipalities of East and West St. Paul. Because the Winnipeg RHA is defined to include East and West St. Paul, use of the geographies in a health services or health status context includes East and West St. Paul. Conversely, because the City of Winnipeg excludes East and West St. Paul, use of the geographies in a municipal administrative context excludes East and West St. Paul. This shapefile reflects the use of Community Areas in a health services or health status context, and includes East and West St. Paul.

This the data for the Winnipeg AVPA Regulation's interactive web map. It contains two polygon datasets that help users determine whether a property is affected by requirements in the regulation and a point dataset to help users navigate to propertiesThis is the data for the Winnipeg Airport Vicinity Protection Area Regulation's interactive web map. It was developed to help interested parties determine whether a property is affected by the Airport Vicinity Protection Area Regulation. To protect and foster the airport’s operations and continued growth, while ensuring orderly and efficient development within Winnipeg, the Province has adopted an Airport Vicinity Protection Area Regulation under The City of Winnipeg Charter. The regulation defines two protection areas called "Area 1" and "Area 2".These areas provide direction on where and what type of residential development may take place near the airport. Area 1 comprises of lands immediately adjacent to the airport, where no new residential development will be permitted, except for replacement of buildings and minor infilling. Area 2 is located further away from the airport, where new or replacement residential development may be constructed. All development within the regulated lands must comply with indoor noise level limits set out in the Regulation.  The parcel boundaries in this interactive map are representations of parcels as defined by plan of subdivision or plan of survey registered at the Land Titles Office. This type of property boundary was chosen because the land division in these plans is used to define property ownership in Manitoba.

This dataset represents Lake Water Geochemical Analyses for the province of Saskatchewan.This dataset represents Lake Water Geochemical Analyses for the province of Saskatchewan. During the intense level of activity directed toward the exploration for uranium in the 1970s, the Saskatchewan Geological Survey and the Geological Survey of Canada funded the collection of several thousand samples of sediments and waters from lakes around the Athabasca Sandstone. All sediment samples were analyzed for U, Cu, Ni, Pb, Zn, Co, Fe and Mn. Selected samples were analyzed for a wide range of additional elements. All lake waters were analyzed for U, F-, and pH, and several hundred samples were analyzed for additional elements and parameters. The Summary Table that precedes this text shows the numbers of samples and elements, and the source of data from which the 8,939 samples listed in the 9 Tables are derived. Over 20 years ago the data in these listings were coded into the Saskatchewan Geological Survey’s ‘Geochemical Data File’, designed in the 1970s (Dunn, 1978b, 1979), and developed by SaskComp (the computer programming department of the Saskatchewan government at that time). The only database listed in the present report that was not in the Geochemical Data File was GSC Open File #779, jointly produced by the SGS and GSC (Coker and Dunn, 1981, 1983) and containing data from detailed surveys of the IAEA/NEA Athabasca Test Area (adjacent to Wollaston Lake). The old Geochemical Data File was state-of-the-art at the time, and data have been available for public scrutiny since inception in 1977. Demonstrations of the File were given at the SGS Open House meetings in 1977 and 1978. The explosive development of personal computers during the past 20 years has made the original Geochemical Data File something of a dinosaur, and the data have been difficult to access and manipulate. The present data file is a compilation that has resulted from detailed evaluation, streamlining, editing and breakdown of the data into simplified Excel files that can easily be manipulated by anyone with a modest knowledge of computers. These data are of historic value and their re-evaluation could assist in current uranium exploration programs. Of particular value is their use in environmental studies, since they represent a 1970s snapshot of the chemistry of the northern Saskatchewan environment prior to mine developments. At the start of sample collection in 1975 Key Lake had not been drained and the only mine site was the pit at Rabbit Lake. This compilation has divided the data into 9 tables, each presented as a shape file. There are 6 shape files of lake sediment data (1LS - 6LS) and 3 shape files of lake water data (4LW - 6LW). Lake water samples were from the same sites as the lake sediments listed in files 4LS - 6LS, hence they have been given the same numeric designation. The data are mostly compatible among the Tables. However, although analytical methods and quality control protocols were similar, they were sufficiently different to warrant treating the data as separate listings. For any regional plotting of data extracted from all Tables these differences should be considered when interpreting distribution patterns. Of particular relevance is that all sediment samples were analyzed for U by neutron activation, with the exception of 158 samples (Table 2LS) where determinations were by fluorometry. These data sets should be fully compatible, because the two techniques provide similar values. Comparison of U data from sediment samples collected and analyzed over four years, then reanalyzed as one batch has shown excellent precision and accuracy (Coker and Dunn, 1981). All U in water determinations were by fluorometry, and all F- by selective ion electrode. Loss on ignition (LOI) data were determined by ignition at 500o C for 4 hours. Table 1LS This data set comprises samples collected by SGS between 1975 and 1978. Samples were digested in aqua regia and all trace elements, except U (see above), were determined by atomic absorption spectrometry (AA).  **Please Note – All published Saskatchewan Geological Survey datasets, including those available through the Saskatchewan Mining and Petroleum GeoAtlas, are sourced from the Enterprise GIS Data Warehouse. They are therefore identical and share the same refresh schedule.

PURPOSE:Chlorophyll a is a photosynthetic pigment common to aquatic algae, and its measurement can provide an estimate of free-floating algae abundance in an aquatic system. For more than 40 years, the Fisheries and Oceans Canada - Great Lakes Laboratory for Fisheries and Aquatic Sciences (DFO-GLLFAS) office in Sault Ste. Marie Ontario has collected water samples for chlorophyll a spectrophotometric analysis, producing data in the form of mg/m3. The collection of chlorophyll a data was generally conducted to assist in characterizing the aquatic systems level of primary productivity, since that can influence fish abundance. This was a supplementary measure of the quality of fish habitat in these systems for a variety of fish-related projects of relevance to DFO’s mandate. Consistency of data collection was dependent on the duration of each project and funding available. DESCRIPTION:The initial study collected chlorophyll a data from the five lakes in the Turkey Lakes Watershed (TLW – Upper and Lower Batchawana Lakes, Wishart Lake, Little Turkey Lake and Turkey Lake) as well as Quinn Lake which is located outside of the TLW (see Smokorowski et al. 2006) in partnership with Environment and Climate Change Canada (ECCC) and Natural Resources Canada (NRCAN), as part of Canada’s Acid Rain Initiative. The TLW study was established in 1979 to evaluate the impacts of acid rain on terrestrial and aquatic ecosystems. This dataset encompasses chlorophyll a data collected from five lakes in the TLW and Quinn Lake (data also collected by the Canadian Wildlife Service and Environment and Climate Change Canada) from 1983 - 2010 with some gaps of varying duration (Webster et al., 2021). Note that an experimental habitat removal took place in some TLW lakes and Quinn Lake in 1999 and 2000. Specifically, in autumn of 1999, 50% of the coarse woody material was removed from the shorelines of Little Turkey Lake and Quinn Lake, and in autumn of 2000, 50% of the course woody material was removed from Wishart Lake shoreline (details available in Smokorowski et al., 2006). Methods Summary: Sampling was only conducted during the open water season and the frequency and extent of sampling frequency in each waterbody varied and was project- and funding-dependent. There are no chlorophyll a data for the years 1986, 1989 – 1990, 1996 – 1997, 2006-2007 and 2009.Sampling was accomplished by rinsing on site an appropriately-cleaned 1 L, brown-opaque polyethylene bottles at least three times. For hand draw samples, the bottle was immersed sub-surface (less than 0.5 meters) to collect the sample. Composite tube samples were collected using an integrated water sampling tube that collected epilimnion water from the entire water column to a depth of 5 meters. Up to five - 1 L (1000 mL) samples were collected per station and returned to the lab on ice. Each 1 L sample was filtered using glass fiber filters (Whatman GF/C, 42.5 mm) within one day of sampling, and then frozen prior to standard chlorophyll a analysis (American Public Health Association [APHA] 1985). From 1983-1998, Chlorophyll a concentrations (mg/L) was calculated based on APHA 1985; from 1998 to present the calculation was based on APHA (1998). The sample dataset information includes the georeferenced sampling locations, the raw data for chlorophyll a calculations, and the calculated chlorophyll a concentrations using both the APHA (1985) and APHA (1998) methods. This dataset was published in partnership with the Canadian Institute of Ecology and Evolution - Living Data Project, which was funded by a CREATE grant from the Natural Science and Engineering Research Council of Canada. We would like to recognize Caroline Dallstream for her effort in publishing this dataset. SAMPLING METHODS:Methods Summary: Sampling was only conducted during the open water season and the frequency and extent of sampling frequency in each waterbody varied and was project- and funding-dependent. There are no chlorophyll a data for the years 1986, 1989 – 1990, 1996 – 1997, 2006-2007 and 2009. See Sampling was accomplished by rinsing on site an appropriately-cleaned 1 L, brown-opaque polyethylene bottles at least three times. For hand draw samples, the bottle was immersed sub-surface (less than 0.5 meters) to collect the sample. Composite tube samples were collected using an integrated water sampling tube that collected epilimnion water from the entire water column to a depth of 5 meters. Up to five - 1 L (1000 mL) samples were collected per station and returned to the lab on ice. Each 1 L sample was filtered using glass fiber filters (Whatman GF/C, 42.5 mm) within one day of sampling, and then frozen prior to standard chlorophyll a analysis (American Public Health Association [APHA] 1985). From 1983-1998, Chlorophyll a concentrations (mg/L) was calculated based on APHA 1985; from 1998 to present the calculation was based on APHA (1998). The sample dataset information includes the georeferenced sampling locations, the raw data for chlorophyll a calculations, and the calculated chlorophyll a concentrations using both the APHA (1985) and APHA (1998) methods.USE LIMITATION:To ensure scientific integrity and appropriate use of the data, we would encourage you to contact the data custodian.

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.

This the data for the Winnipeg AVPA Regulation's interactive web map. It contains two polygon datasets that help users determine whether a property is affected by requirements in the regulation and a point dataset to help users navigate to propertiesThis is the data for the Winnipeg Airport Vicinity Protection Area Regulation's interactive web map. It was developed to help interested parties determine whether a property is affected by the Airport Vicinity Protection Area Regulation. To protect and foster the airport’s operations and continued growth, while ensuring orderly and efficient development within Winnipeg, the Province has adopted an Airport Vicinity Protection Area Regulation under The City of Winnipeg Charter. The regulation defines two protection areas called "Area 1" and "Area 2".These areas provide direction on where and what type of residential development may take place near the airport. Area 1 comprises of lands immediately adjacent to the airport, where no new residential development will be permitted, except for replacement of buildings and minor infilling. Area 2 is located further away from the airport, where new or replacement residential development may be constructed. All development within the regulated lands must comply with indoor noise level limits set out in the Regulation.  The parcel boundaries in this interactive map are representations of parcels as defined by plan of subdivision or plan of survey registered at the Land Titles Office. This type of property boundary was chosen because the land division in these plans is used to define property ownership in Manitoba.

This the data for the Winnipeg AVPA Regulation's interactive web map. It contains two polygon datasets that help users determine whether a property is affected by requirements in the regulation and a point dataset to help users navigate to propertiesThis is the data for the Winnipeg Airport Vicinity Protection Area Regulation's interactive web map. It was developed to help interested parties determine whether a property is affected by the Airport Vicinity Protection Area Regulation. To protect and foster the airport’s operations and continued growth, while ensuring orderly and efficient development within Winnipeg, the Province has adopted an Airport Vicinity Protection Area Regulation under The City of Winnipeg Charter. The regulation defines two protection areas called "Area 1" and "Area 2".These areas provide direction on where and what type of residential development may take place near the airport. Area 1 comprises of lands immediately adjacent to the airport, where no new residential development will be permitted, except for replacement of buildings and minor infilling. Area 2 is located further away from the airport, where new or replacement residential development may be constructed. All development within the regulated lands must comply with indoor noise level limits set out in the Regulation.  The parcel boundaries in this interactive map are representations of parcels as defined by plan of subdivision or plan of survey registered at the Land Titles Office. This type of property boundary was chosen because the land division in these plans is used to define property ownership in Manitoba.

This the data for the Winnipeg AVPA Regulation's interactive web map. It contains two polygon datasets that help users determine whether a property is affected by requirements in the regulation and a point dataset to help users navigate to propertiesThis is the data for the Winnipeg Airport Vicinity Protection Area Regulation's interactive web map. It was developed to help interested parties determine whether a property is affected by the Airport Vicinity Protection Area Regulation. To protect and foster the airport’s operations and continued growth, while ensuring orderly and efficient development within Winnipeg, the Province has adopted an Airport Vicinity Protection Area Regulation under The City of Winnipeg Charter. The regulation defines two protection areas called "Area 1" and "Area 2".These areas provide direction on where and what type of residential development may take place near the airport. Area 1 comprises of lands immediately adjacent to the airport, where no new residential development will be permitted, except for replacement of buildings and minor infilling. Area 2 is located further away from the airport, where new or replacement residential development may be constructed. All development within the regulated lands must comply with indoor noise level limits set out in the Regulation.  The parcel boundaries in this interactive map are representations of parcels as defined by plan of subdivision or plan of survey registered at the Land Titles Office. This type of property boundary was chosen because the land division in these plans is used to define property ownership in Manitoba.

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.