The province of PEI has been monitoring dissolved oxygen in some Island estuaries since 2015. This dataset contains data collected in 2022. Monitoring results from earlier years can also be found on the Prince Edward Island open data portal.This dataset includes raw data from 20 Island estuaries from across PEI; mapped locations of monitoring sites; and downloadable raw data. The data includes dissolved oxygen concentration, dissolved oxygen saturation, water temperature and instrument depth. Data is usually collected between May and October of each year. 18 estuaries are monitored on a 3 year rotating cycle with at least 6 of these 18 monitored in any given year. Another 2 estuaries are monitored every year. 2 locations are monitored in each estuary; the Upper Estuary location represents the upper 10% boundary of the estuary’s surface area, is closest to the freshwater inputs and should display signs of eutrophication if they are present; the Mid Estuary location represents the mid-point or 50% boundary of the surface area of the estuary. The Mid Estuary site may have two loggers, one placed about 0.5 m the bottom substrate and one placed about 0.5 m from the surface of the water. Data may be used to determine hourly fluctuations in oxygen, the degree of eutrophication, and the presence and duration of anoxia and hypoxia. Temperature and instrument depth (not the same as water depth at the site) data are also collected and available for use.

The province of PEI has been monitoring dissolved oxygen in some Island estuaries since 2015. This dataset contains data collected from 2015 to 2021. Monitoring results from later years can also be found on the Prince Edward Island open data portal.This dataset includes raw data from 20 Island estuaries from across PEI; mapped locations of monitoring sites; and downloadable raw data. The data includes dissolved oxygen concentration, dissolved oxygen saturation, water temperature and instrument depth. Data is usually collected between May and October of each year. 18 estuaries are monitored on a 3 year rotating cycle with at least 6 of these 18 monitored in any given year. Another 2 estuaries are monitored every year. 2 locations are monitored in each estuary; the Upper Estuary location represents the upper 10% boundary of the estuary’s surface area, is closest to the freshwater inputs and should display signs of eutrophication if they are present; the Mid Estuary location represents the mid-point or 50% boundary of the surface area of the estuary. The Mid Estuary site may have two loggers, one placed about 0.5 m the bottom substrate and one placed about 0.5 m from the surface of the water. Data may be used to determine hourly fluctuations in oxygen, the degree of eutrophication, and the presence and duration of anoxia and hypoxia. Temperature and instrument depth (not the same as water depth at the site) data are also collected and available for use.

Environmental Monitoring Stations (EMS) spatial points coverage for the Province by LOCATION TYPES. The following spatial layers reference this as a data source: 1. Environmental Monitoring - All Stations 2. Environmental Monitoring Stations - Air Monitoring (Ambient Air Site) 3. Environmental Monitoring Stations - Air Monitoring (Air Permit) 4. Environmental Monitoring Stations - Water Sites (Water Monitoring) 5. Environmental Monitoring Stations - Water Sites (Water Permits) 6. Environmental Monitoring Stations - Water Sites (Well) 7. Environmental Monitoring Stations - Water Sites (Observation Well) 8. Environmental Monitoring Stations - Water Sites (Spring)

Environmental monitoring stations (EMS) points coverage for the Province by MONITORING LOCATION GROUPS.

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 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 are monitored to evaluate potential effects of change on fisheries. From 2000 to 2011, surface water temperature data was collected at depths of approximately 0.1 to 1.0 meters using a handheld digital thermometer through partnered community-led and community/Fisheries and Oceans Canada/ university partners 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 the beginning in a series of baseline data sets on water quality from this lake. These data will contribute to a better understanding of 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, Great Lakes Fisheries Commission, and University of Alberta. Community of Délı̨nę partners and field workers that participated in data collection include Jane Baptiste, Doug Baton, Moise Beyonnie, Gloria Gaudette, Bruce Kenny, Greg Kenny, Hughie Kenny, Jonas Kenny, Morris Lennie, George Menacho, Morris Modeste, Nathan Modeste, Isreal Neyelle, Lyle Neyelle, Clyde Takazo, Lucy Ann Takazo, Freddie Vital, Cameron Yukon, Cyre Yukon, Tyrone Yukon, Charity Yukon, Chris Yukon, Archie Vital, John Betsidea, and Barbara Yukon. Funding and logistical support was provided by: Northwest Territories Cumulative Impact Monitoring, Sahtú Renewable Resource Board, the Polar Continental Shelf Program, Canadian Circumpolar Institute, Natural Sciences and Engineering Research Council of Canada, Government of Northwest Territories Renewable Resources Délı̨nę, and Fisheries and Oceans Canada.

1990-luvun alussa valmistunut aineisto sisältää Suomen päävesistöalueet, valuma-aluejaon sekä purkupisteet. Valuma-alueet on rajattu topografian ja vesistöjen perusteella 1:50 000 mittakaavaisille paperikartoille, joilta alueet on digitoitu FINGIS-ohjelmalla sokkodigitointina. Hierarkkinen valuma-aluejako sisältää enimmillään 3, joista tarkimmassa jakovaiheessa on yhteensä yli 5 600 osa-aluetta. Valuma-aluejaon hierarkisuutta voidaan kuvata käyttämällä aineistoon liittyviä valuma-alueiden reunaviivoja sekä valuma-aluetunnusta. Päävesistöalueita on 74 kappaletta, niiden pinta-ala on yli 200 km2 ja numerointi alkaa Laatokkaan laskevista vesistöalueista ja kiertää rannikkoalueet myötäpäivään päättyen Vienan mereen laskeviin vesistöihin. Yli 10 000 km2:n kokoisten päävesistöalueiden osajaossa aina kolmanteen jakovaiheeseen asti on käsiteltävä alue jaettu enintään 9 osa-alueeseen, jolloin yhdellä vesistöalueella on enintään 729 osa-aluetta. Kooltaan 1 000-10 000 km2 suuruiset päävesistöalueet on jaettu kahteen jakovaiheeseen, jolloin osa-alueita on vesistöalueella enintään 81 kappaletta. Alle 1 000 km2 suuruiset päävesistöalueet on jaettu enimmillään yhdeksään osa-alueeseen.Aineisto kuuluu SYKEn avoimiin aineistoihin (CC BY 4.0). Käyttötarkoitus: Valuma-aluejako on tehty pääasiassa hydrologisen seurannan tarkoituksiin. Purkupisteet voivat sijaita sivu-uoman tai järven luusuan lisäksi myös esimerkiksi voimalan tai muun hydrologisen mittauspaikan kohdalla. Valuma-alueiden koko voi vaihdella huomattavasti (n.2 km2- n.3500 km2) johtuen valitusta tunnusjärjestelmästä sekä Suomen luonnonmaantieteellisistä erityispiirteistä (mm. järviset alueet) Vesipolitiikan puitedirektiivin vesienhoidon suunnittelujärjestelmä perustuu valuma-alueajattelulle, mm. direktiivin mukaiset vesienhoitoalueet on muodostettu päävesistöalueista. Lisätietoja: https://geoportal.ymparisto.fi/meta/julkinen/dokumentit/valuma-aluejako.pdf 2020-luvulla on laadittu ensimmäinen kokonaan digitaalisilla tuotantomenetelmillä toteutettu mallinnukseen perustuva Suomen kattava hierarkkinen valuma-aluejako, joka tulee korvaamaan 1990-luvulla käyttöönotetun valuma-aluejaon. Suomen ympäristökeskuksen (Syke) laatima valtakunnallinen valuma-aluejako koostuu viidestä hierarkiatasosta, jotka kattavat uomien ja järvien valuma-alueiden lisäksi myös merialueet. Tarkimmalla tasolla valuma-aluejaossa on yli 40 000 valuma-aluetta. https://ckan.ymparisto.fi/dataset/valuma-aluejako Catchment Areas In the early 1990s completed spatial dataset of Finnish catchment areas includes main river basins, river basins’ delineation and discharge points. The catchment areas were delinated on the basis of topography on 1:50,000 scale paper maps, from which the catchment areas were digitized with the FINGIS program as blind digitization. The hierarchical river basin /delineation has 3 levels. In the most precise level there are over 5,600 sub-areas. The structure of the hierarchy is described using catchment area boundaries together with the river basin codes attached to the features. The database has 74 main river basins with an area over 200 km². The code numbering starts from the south-eastern river basins flowing to the Lake Ladoga, and continues clockwise along the Baltic coast, ending to the rivers flowing into the Arctic Ocean and the White Sea. All the river basin hierarchy levels have maximum 9 sub-basins. Besides the main river basins, the boundaries are determined for 177 small coastal basins, smaller than 200 km²; they are not further divided into sub-basins. This Syke’s dataset can be used according to open data license (CC BY 4.0). INSPIRE compatible dataset has been published. In the 2020s completed spatial dataset of Finnish catchment areas based on modeling implemented entirely with digital production methods made by the Finnish Environment Institute (Syke) consists of five hierarchical levels, which cover not only the catchment areas of river segments and lakes, but also sea areas. At the most precise level, there are more than 40,000 catchment areas in the river basin system. https://ckan.ymparisto.fi/dataset/valuma-aluejako