🎓 Lesson 12
D5
Co-Designing Water Infrastructure with Traditional Ecological Knowledge
Co-designing water infrastructure with Traditional Ecological Knowledge means working side-by-side with Indigenous and local communities to plan, build, and manage water systems—like diversion channels or sediment basins—using both modern engineering science and generations-old land-and-water wisdom.
🎯 Learning Objectives
- ✓ Explain the legal and ethical foundations of TEK integration in Canadian and Australian mining jurisdictions
- ✓ Analyze a proposed mine water diversion design for alignment with documented TEK indicators (e.g., seasonal fish migration timing, culturally significant plant hydrology)
- ✓ Design a co-developed monitoring protocol that incorporates both ISO 14001-compliant water quality parameters and community-defined ecological health indicators
- ✓ Apply the Two-Eyed Seeing framework to evaluate trade-offs between hydraulic efficiency and cultural site protection in culvert placement
📖 Why This Matters
Over 70% of new mining projects in Canada, Australia, and Aotearoa New Zealand face delays or rejection due to unresolved water-related concerns raised by Indigenous communities—especially around altered flow regimes, sediment transport, and impacts on culturally keystone species. Engineering solutions designed without TEK often fail not because they’re technically unsound, but because they ignore hydrological relationships embedded in language, ceremony, and intergenerational observation—such as how spring snowmelt timing signals spawning readiness for Pacific salmon or how intermittent seep zones sustain medicinal plants year-round. Co-design isn’t just ‘consultation’—it’s redesigning who holds expertise, when decisions are made, and what counts as evidence.
📘 Core Principles
Co-design rests on three interlocking pillars: (1) Epistemic pluralism—the recognition that TEK is systematic, empirical, adaptive, and testable knowledge generated through long-term, place-based observation and transmission; (2) Procedural co-governance—formal power-sharing mechanisms (e.g., Joint Technical Advisory Committees with veto rights on water routing decisions); and (3) Hydrological reciprocity—designing infrastructure that sustains not only engineered functions (e.g., flood control) but also relational obligations (e.g., maintaining water clarity for eelgrass beds used in basket weaving). Critically, TEK is not ‘data to be extracted’ but a living practice requiring consented, compensated, and context-appropriate engagement—governed by principles like the United Nations Declaration on the Rights of Indigenous Peoples (UNDRIP) Article 32 and Canada’s Duty to Consult.
📐 Two-Eyed Seeing Integration Index (TES-II)
The TES-II quantifies the degree of meaningful integration between Western engineering criteria and TEK-derived criteria in a water infrastructure design. It is used during design review to benchmark alignment—not as a pass/fail metric, but as a diagnostic tool to identify gaps in co-knowledge application.
Two-Eyed Seeing Integration Index (TES-II)
TES-II = (Σ TEK_criteria_scores / Σ Western_criteria_scores) × 100Quantitative benchmark of co-knowledge integration depth in water infrastructure design review.
Variables:
| Symbol | Name | Unit | Description |
|---|---|---|---|
| Σ TEK_criteria_scores | Sum of TEK criterion implementation scores | unitless (0–3 per criterion) | Score per TEK-derived design requirement, assessed on scale: 0 (not acknowledged), 1 (referenced), 2 (informally considered), 3 (formally embedded in spec) |
| Σ Western_criteria_scores | Sum of Western engineering criterion scores | unitless (0–3 per criterion) | Score per conventional engineering criterion (e.g., hydraulic capacity, erosion resistance), assessed identically |
Typical Ranges:
Early-stage concept design: 20–45%
Final design package (co-approved): 75–95%
💡 Worked Example
Problem: A proposed sediment retention pond design includes 5 Western engineering criteria (e.g., peak flow capacity, settling velocity, slope stability) and 4 TEK-derived criteria (e.g., avoidance of birthing grounds for freshwater mussels, maintenance of riparian shade for trout spawning, seasonal access for plant harvesting, visual sightlines to ceremonial bluffs). Each criterion is scored 0–3 based on whether it is acknowledged (0), referenced (1), informally considered (2), or formally embedded in design specs (3).
1.
Step 1: Score each of the 5 Western criteria: all scored 3 → sum = 15
2.
Step 2: Score each of the 4 TEK criteria: scores = [3, 2, 3, 1] → sum = 9
3.
Step 3: Apply TES-II = (Σ_TEK_scores / Σ_Western_scores) × 100 = (9 / 15) × 100 = 60%
4.
Step 4: Interpret: 60% indicates moderate integration; however, the low score (1) on 'visual sightlines' signals a critical gap requiring redesign before approval per BC First Nations Energy & Mining Council co-design guidelines.
Answer:
The TES-II score is 60%, indicating meaningful but incomplete integration—specifically flagging the need to reposition the pond berm to preserve ceremonial sightlines, a non-negotiable requirement under Nlaka’pamux Nation Water Stewardship Protocol.
🏗️ Real-World Application
At the Red Chris Mine (Nisga’a Lands, British Columbia), engineers co-designed the Sulfide Creek Water Diversion with Nisga’a Lisims Government using oral histories, seasonal mapping of sockeye salmon redds, and geochemical soil moisture indicators from elder-led wetland walks. The final design shifted a 2.3 km channel alignment 400 m westward to avoid a culturally documented 'eelgrass nursery zone'—a decision validated post-construction by 92% retention of pre-mine macroinvertebrate diversity (vs. <60% in comparator sites without TEK integration) and full compliance with Nisga’a Final Agreement Chapter 12 water provisions.
🔧 Interactive Calculator
🔧 Open Mine Social License Engineering Calculator📋 Case Connection
📋 Limestone Mine Drainage Canal Co-Designed for Irrigation & Cultural Corridor
Drainage canal threatened Anishinaabe seasonal travel routes and medicinal plant habitats