Data Dictionary (English, French, CSV)

Data Dictionary: English/French CSV file you can open as a table, filter, chart and export up to 10,000 rows. From Environment and Climate Change Canada, updated May 2026.

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Publisher-reported update

2026-05-20

Expanded Geographic Area (M9, M10, M11a, M12, BI1, RI1, SL1, SL2, QU1 [2013] and M9, M10, M11a, M12, BI1, BU1, BU2, RI1, SL1, SL2, QU1, MC2 [2011-March 2018]) Water quality chemistry data for 17 sites in the lower Athabasca River (LAR), the Peace and Slave rivers, and their tributaries, including measurements of major ions, nutrients, metals (dissolved and total) and organics (including BTEX, cyanide and polycyclic aromatic hydrocarbons (PAHs). An interpretive report (Glozier et. al., 2018) was released in 2018, which included assessments of the water quality status and trends for data from 2012-2015. An excerpt from the executive summary is provided below and the full report can be found on line here (https://environmentalmonitoring.alberta.ca/wp-content/uploads/2018/10/OS-TS-Water-1.4-Surface-Water-Quality-Mainstem-Tribs-Delta-1.pdf) ; “During the three year JOSM period, over 1300 water quality samples were collected from 21 locations representing a nearly 5-fold increase in overall sampling effort in the Lower Atahbasc river (LAR), Peace River (PR), Slave River (SR) and Peace Athabasca Delta (PAD). Status and spatial patterns among sites were examined for each parameter type…

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