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Canada's frontier lands are covered by 31 prescribed regions for the Environmental Studies Research Fund (ESRF), which sponsors environmental and social studies for oil and gas decision-making. The dataset includes geospatial boundaries, historical levy tables, and maps illustrating regions where levies no longer apply due to territorial devolution. Natural Resources Canada administers this data, which was last updated in April 2026.
License is OGL-CA-2.0. Data is provided in PDF, CSV, and ESRI REST formats.