Green/Cheakamus watershed: Water quality report for the 2023/2024 wet season
Bibliographic record
Abstract
Water is essential for life, and steps are needed to understand, protect and restore its health in fish habitat throughout British Columbia. The Raincoast Healthy Waters program was launched in 2023 to establish community-oriented water pollution monitoring in select BC watersheds. Two Healthy Waters sampling events take place every year in each watershed – the first in the dry season (summer), and the second being in the wet season (winter). While the Healthy Waters program typically focuses its work within singular watersheds, this partnership featured two Whistler area watersheds: the Green River, which drains through the Lillooet and Fraser Rivers into the Strait of Georgia (watershed area of 875 km2). and the Cheakamus River which drains south via the Squamish River to Howe Sound (watershed area of 1,034 km2). Combined, these watersheds cover an area of 1,909 km2. This report highlights results from the first wet (winter) season sampling carried out with the support and participation of the Whistler Lakes Conservation Foundation (WLCF). Briefly, the Healthy Waters – WLCF team determined basic water properties (temperature, conductivity, pH, dissolved oxygen and turbidity) in situ at sampling sites on November 23, 2023. Water samples were collected from five water categories, including source water (2 samples), stream and river water (7 samples), road runoff (6 samples), tap water (10 samples – pooled into a single composite sample) and marine water (one sample). Samples were then analysed individually for coliform, metals, nutrients and physical parameters, and pooled by water category and analysed for pesticides, polycyclic aromatic hydrocarbons (PAHs), pharmaceuticals and personal care products (PPCPs), polychlorinated biphenyls (PCBs), alkylphenol ethoxylates, bisphenols, per- and poly-fluoroalkyl substances (PFAS), sucralose and 6-PPD Quinone. Several contaminant classes were found at higher concentrations in the dry season, but some were higher in the wet season. Overall, the Green/Cheakamus watersheds had relatively good water quality in the wet season, but additional sampling and analysis will provide additional insight into contamination impacts from forest fires, domestic wastewater, industrial chemicals and road runoff on the health of this valued watershed.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".