Transboundary Rivers Water Quality Monitoring Program

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The Department of Environment and Climate Change (ECC) is responsible for monitoring transboundary waters to ensure that upstream provinces and territories are not causing downstream effects in the Northwest Territories (NWT). The Transboundary suspended sediment and water quality sampling sites were established to characterize the water quality in the major transboundary rivers flowing into the NWT. The transboundary rivers monitored under this program are the Slave, Hay, Liard and Peel Rivers.The comprehensive program has developed a solid baseline for the aquatic ecosystem of these rivers against which future changes can be measured.

Version 6.0.0
Data Steward Email
Data Collection Organization Government of the Northwest Territories, Environment and Climate Change, Water Management and Monitoring Division (WMMD)
Data Upload Organization Government of the Northwest Territories, Environment and Climate Change, Water Management and Monitoring Division (WMMD)
Progress Code onGoing
Maintenance Frequency Code asNeeded
Topic Category Code inlandWaters
Keywords Water quality, suspended sediment quality, slave river, liard river, peel river, hay river, NWT transboundary rivers, NWT, Mackenzie River Basin Board
Spatial Extent -134.863° 60.002°, -111.882° 67.322° (W S, E N)
Temporal Extent 2000-09-11 to 2020-10-18
Date Published
Alternate Formats FGP-HNAP ISO:19115-2 (XML) , W3C DCAT (XML) , W3C DCAT (JSON-LD)


Government of the Northwest Territories, Environment and Climate Change, Water Management and Monitoring Division (WMMD). 2023-04-21. "Transboundary Rivers Water Quality Monitoring Program" (dataset). 6.0.0. DataStream.

Funding Sources

GNWT core funding

Data Collection Information

Water and suspended sediment samples have been collected for these transboundary rivers for almost 30 years. In addition to using a water quality mutimeter probe (hydrolab or YSI), river grab samples and suspended sediment and centrifugate water were collected using a centrifuge. Sediment and water are analyzed for: •chlorinated phenolics
• dioxins (polychlorinated dibenzo para dioxins, or PCDDs) and furans (polychlorinated dibenzofurans, or PCDFs)
• herbicides
• naphthenic acids (NAs)
• organochlorine pesticides
• polybrominated diphenyl ethers (PBDEs)
• polychlorinated biphenyls (PCBs)
• polycyclic aromatic hydrocarbons (PAHs) – parent and alkylated
• polyfluorinated compounds (PFCs)
• total and dissolved metals
• nutrients
• major ions
• physical parameters

Data Collection Processing

Considerable QAQC processing for organic analysis is carried out at the specialized labs peromforming these analysis. This includes comparisons to lab method blanks, spikes and % recovery standards. Data uploaded to the WMM Lodestar database is further processed for a variety of data quality objectives including requested detection limits, holding times, field and travel blank comparisons, replicate and Total vs Dissolved Metal RPD percentages.

Attribution Licence (ODC-By) v1.0

You are free to share, copy, distribute, use, modify, transform, build upon, and produce works from the data as long as you attribute any public use of the data, or works produced from the data, in the manner specified in the licence. For any use or redistribution of the data, or works produced from it, you must make clear to others the licence of the data and keep intact any notices on the original data.

Data Disclaimer

Information on this website is provided as a public service by the Government of the Northwest Territories. This information is made available without warranty of any kind, either expressed or implied. By accessing and using the website, users acknowledge and agree that use of the website and the content is entirely at their own risk. The Government of the Northwest Territories, including their employees, agents, and assignees shall not be liable for losses or damages of any kind that may arise as a result of use of information provided on the website. The material on this website is covered by the provisions of the Copyright Act, and by Canadian laws, policies, regulations and international agreements. Material may not be used or reproduced for commercial purposes without the prior written consent arranged by the publisher of the material. If it is reproduced or redistributed for non-commercial purposes, copyright must be appropriately acknowledged.

API Access

curl -G --data-urlencode "\\$filter=DOI eq '10.25976/429b-qn70'" -H "x-api-key: PRIVATE-API-KEY"



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DataStream system update: set citation to recommended default.


Comment section to reflect Centrifuge Water

Schema v2.6.2
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File size 3.81 MB


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Schema v2.6.2
Digest SHA3-256:4a314232ac11ff7d9466ce343809345db365d2a3106e48546eb2cb7bed015b4e
File size 3.66 MB