This data is intended to identify Canadian fresh waters which require additional measures (e.g., ballast water exchange and treatment) prior to release, as described in https://tc.canada.ca/en/marine-transportation/marine-safety/list-canada-s-designated-alternate-ballast-water-exchange-area-fresh-waters-tp-13617e-2021. The data is not intended for navigation purposes.According to Canada’s Ballast Water Regulations, vessels which are managing ballast water to meet the ballast water performance standard cannot release ballast water into fresh waters unless that ballast water was first exchanged in accordance with the ballast water exchange standard. For the purpose of this requirement, Canadian fresh waters are the following:- the waters at the Port of Kitimat and waters in or upstream of the Kitimat Arm, east of a line between Hilton Point and Steel Point;- the waters at the Port of Stewart and waters in or upstream of the Portland Canal, north of a line between Portland Point and Ramsden Point;- the waters of all Fraser River ports that are: -- east of Tilbury Island in the main arm of the Fraser River including Annacis Island and New Westminster docking areas; and -- east of the eastern tip of Mitchell Island in the north arm of Fraser River;- the waters of the Saguenay River ports and waters upstream of L’Anse-Creuse;- the waters of all St. Lawrence River ports and waters west of the east point of Ile d’Orléans including the port of Quebec City;- all Canadian waters of the Great Lakes Basin; and- the waters of Happy Valley-Goose Bay and waters of Lake Melville west of Rabbit Island.Legal Constraints: Users should be aware that the polygons depicting areas requiring additional measures to manage ballast water are intended for illustration only and should not be used for navigational or legal purposes.

The Maritimes Region is divided into seven Clam Harvesting Areas (CHA).CLAM HARVESTING AREA 1 is described as follows:The inland and tidal waters of the counties of Colchester, Cumberland and Hants that border and flow into the Bay of Fundy.CLAM HARVESTING AREA 2 is described as follows:The inland and tidal waters of the counties of Annapolis, Digby and Kings.CLAM HARVESTING AREA 3 is described as follows:The inland and tidal waters of Yarmouth County.Time restrictions for Clam Harvesting Area 3: No person shall fish for clams from sunset each Saturday until sunrise on the following Monday (closed Sundays) in the boundaries of Clam Harvesting Area 3.CLAM HARVESTING AREA 4 is described as follows:The inland and tidal waters of the counties of Shelburne, Queens and Lunenburg and that portion of Halifax County west of Pennant Point (as defined in the Territorial Sea Geographical Coordinates Order (C.R.C., c. 1550), Schedule I, Area 4).CLAM HARVESTING AREA 5 is described as follows:The inland and tidal waters of Guysborough County and that portion of Halifax County east of Pennant Point (as defined in the Territorial Sea Geographical Coordinates Order (C.R.C., c. 1550), Schedule I, Area 4).CLAM HARVESTING AREA 6 is described as follows:The inland and tidal waters of the counties of Richmond and Cape Breton, all of Victoria County except that portion between Cape North and Inverness County and that portion of Inverness County that borders on the Bras d'Or Lakes.NEW BRUNSWICK - BAY OF FUNDY CLAM HARVESTING AREA 7 is described as follows:The inland and tidal waters of the counties of Charlotte, Saint John and Albert that flow into the Bay of Fundy.

The data represents the relative expense of farm chemicals (herbicides, insecticides and fungicides) in the agricultural area of Alberta. It is an estimate of the degree to which crop production agriculture may contribute to surface or groundwater contamination.Agriculture production that makes greater use of herbicides, insecticides and pesticides in generally considered more intensive. Presenting the relative farm chemical expenses by SLC polygons reveals where the most intensive agricultural production in the province occurs. Chemical use is part of an equation to determine a measure of surface water quality risk. If an area is known to have certain risk factors that would affect not only surface, but groundwater quality as well, a higher chemical expense index ranking in that same area may be of concern. Where risks of surface or groundwater contamination exist, environmental farm planning can help to minimize them.

Groundwater flow is the movement of water in an aquifer or hydrogeological unit. The dataset shows groundwater flow rate and direction in the hydrogeological unit. Groundwater flow is establish from piezometric surface map. The method used to create the dataset is described in the metadata associated with the dataset. The dataset represents a description of the flow, including rate in m/d, direction, date and source. Typically, the data provided will not be in the form of a shapefile with linked properties but in the form of an image that sketches the groundwater flow. The image could also represent a cross section of the hydrogeologic units showing the regional trends of the groundwater flow.

INW - Inland water resources (inlandWaters)Inland water features, drainage systems, and their characteristics. For example, resources describing rivers and glaciers, salt lakes, water use plans, dams, currents, floods, water quality, and hydrographic charts

The Wastewater Systems Effluent Regulations (WSER), developed under the Fisheries Act, came into force in 2012 to manage wastewater releases by systems that collect an average daily influent volume of 100 cubic metres or more. The WSER also does not apply to any wastewater system located in the Northwest Territories, Nunavut and north of the 54th parallel in the provinces of Quebec and Newfoundland and Labrador. The WSER set national baseline effluent quality standards that are achievable through secondary wastewater treatment. The map below presents the wastewater system locations in Canada and the type of treatment they utilize (mechanical, lagoon or no treatment). The data is based on the information submitted to Environment and Climate Change Canada as of November 2022. Note that this layer does not represent the level of wastewater treatment or whether the system complies with the WSER.The map is available in both ESRI REST (to use with ARC GIS) and WMS (open source) formats. For more information about the individual reporting wastewater systems, datasets are available in either Excel or CSV formats at the resource listed below: “Wastewater Systems Effluent Regulations Reported Data”.Data from Quebec and YukonThe data for Quebec municipalities (after 2017) is provided to the department separately through the equivalency agreement that was finalized in October 2018. Beginning in 2015, the data reported for the Yukon is provided to the department separately through an equivalency agreement finalized in 2014.More information on the wastewater sector including the regulations, agreements, contacts and resource documents is available at: https://www.canada.ca/wastewater

A compendium of reports that provide information about aquatic and terrestrial animals and plants, soils, surface water, groundwater and their accompanying data files and maps

Sea scallop (Placopecten magellanicus) and Iceland scallop (Chlamys islandica) concentration areas of this layer are described as being known and commercially exploited historically and/or currently. The mapping of these areas is based on several sources of information: research surveys (since 1977, annually but alternating sectors since 2009), exploratory fisheries (2000, 2001, 2003) and commercial fisheries (annually). These concentration areas are considered among the most abundant beds and are used for commercial fishing.This layer does not represent the general distribution of the species nor the extent to which fishing is allowed and does not take into account the large unexploited beds. The extent of shellfish beds can change over time in response to, among others, harvesting and recruitment rates. The polygons might underestimate the concentration areas because fishing and scientific surveys occurred where the target resource was known to be more abundant. However, the precision is good enough for resource protection and management needs in case of an environmental incident. This information is valid until data from a more recent research survey is published.Data sources and references:Bourdages, H. et Goudreau, P. 2010. Évaluation des stocks de pétoncles des eaux côtières du Québec en 2009 : données de la pêche commerciale. Secr. can. de consult. sci. du MPO. Doc. de rech. 2010/068. viii + 69 p. Giguère, M., Brulotte, S. et Goudreau, P. 2000. État des stocks de pétoncles des eaux côtières du Québec. Secr. can. de consult. sci. du MPO. Doc. de rech. 2000/086. xi + 46 p.Trottier, S., Bourdages, H., Goudreau, P et Brulotte, S. 2017. Évaluation des stocks de pétoncle des eaux côtières du Québec en 2015: données de la pêche commerciale, des relevés de recherche et des pêches exploratoires. Secr. can. de consult. sci. du MPO. Doc. de rech. 2017/037: xvi + 176 p.

The National Ecological Framework for Canada's "Total Land and Water Area by Ecoregion” dataset provides land and water area values for ecoregion framework polygons, in hectares. It includes attributes for a polygon’s total area, land-only area and large water body area.

The National Ecological Framework for Canada's "Total Land and Water Area by Ecozone” dataset provides land and water area values for ecozone framework polygons, in hectares. It includes attributes for a polygon’s total area, land-only area and large water body area.