Provincially Significant Wetlands Ontario. To find out if a wetland is significant, visit Make a Natural

To find out if a wetland is significant, visit Make a Natural Heritage Area Map or contact your local ministry Provincially Significant Wetlands (PSWs) are those areas identified by the province as being the most valuable. A PSW (Provincially Significant Wetland) is a wetland that the province considers most valuable using a science-based ranking system This map application displays wetlands that have been evaluated using the Ontario Wetland Evaluation System as provincially significant or non-provincially significant. Significance is determined by the Ontario Wetland Evaluation System. Typically, new development is not minimum scoring criteria to be designated as a provincially significant wetland. Provincially Significant Wetlands (PSWs) are those areas identified by the province as being the most valuable. They are determined by a science The “provincially significant” designation has significant implications, as provincial policy provides protection for significant An overview of Wetlands in Ontario *Due to limitations of the shapefile format, Wetland data can only be downloaded in the file geodatabase format. They also include lands where the water table is close to the surface. The Ontario government has moved ahead with changes to the Ontario Wetland Evaluation System in support of Bill 23, More Homes Ontario Wetland Evaluation System (OWES) assessments are critical tools to identify and designate Provincially Significant Wetlands (PSWs). I used to tell residents, with a very high level of confidence, that a wetland designated as “Provincially Significant Wetland (PSW)” in Ontario offers a very high level of The Ontario government has moved ahead with changes to the Ontario Wetland Evaluation System in support of Bill 23, More Homes Provides a spatial representation and attribute information for wetlands in Ontario. They are determined by a science-based ranking system known as the Ontario Submit the final digital wetland boundary mapping and the wetland’s status (such as significant) within 30 days of completing an Contents Provincially Significant Wetlands (PSW) (Public View) Topographic Esri, CGIAR, USGS | Province of Ontario, Esri Canada, Esri, TomTom, Garmin, SafeGraph, FAO, METI/NASA, Ontario has a key role to play in protecting these precious ecosystems, holding around 24% of wetlands in Canada and 6% of all wetlands on Provides a spatial representation and attribute information for wetlands in Ontario. They are determined by a science-based ranking system known as the Ontario This map application displays wetlands that have been evaluated using the Ontario Wetland Evaluation System as provincially significant or non-provincially significant. In the VOICE YOUR CONCERNS! Visit the Clarington and Durham Region Friends of the Farewell Message Board Post your comments and From the dataset abstract Wetlands are lands that are seasonally or permanently flooded by shallow water. This study aims to model the impact of this policy change on provincially protected wetland area in Southern Last data update: December 21, 2025 Includes all wetlands available from the Ministry of Natural Resources and Forestry: evaluated Provincially Significant Wetlands Provincially Significant Wetlands (PSWs) are those areas identified by the province as being the most valuable. They are determined by a science-based ranking system known as the Ontario Ontario has a key role to play in protecting these precious ecosystems, holding around 24% of wetlands in Canada and 6% of all wetlands on Requires protection of “significant wetlands”. The new reserve features a large wetland complex that forms part of a broader Provincially Significant Wetland system has been identified as a Candidate Life Science Area In November 2022, The More Homes Built Faster Act, 2022, introduced changes to how wetlands are evaluated for protection in Ontario under the Ontario Wetland Evaluation System. The The Make a Map: Natural Heritage Areas mapping application displays some of Ontario’s natural heritage information, such as wetlands, woodlands, In 2023, Ontario's Ministry of Natural Resources updated its scorecard for provincially protected wetlands, effectively dropping 55 . Designation as a PSW results in a high Provincially Significant Wetlands Provincially Significant Wetlands (PSWs) are those areas identified by the province as being the most valuable. Provides a spatial representation and attribute information for wetlands in Ontario. On Ontario GeoHub, access a file geodatabase by clicking Download > Provides a spatial representation and attribute information for wetlands in Ontario. Prohibits development or interference within the boundaries of a Provincially Significant Wetland (PSW). To be clear, the wetlands still exist – they haven’t been filled in or destroyed, yet – but they’ve lost their Provincially Significant Wetland status, due to looser rules introduced by Provides a spatial representation and attribute information for wetlands in Ontario.

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