# CanadaBuys #BC235366

Engineering assessments of water storage options for Xwulqw’selu (Koksilah)

**Posted:** October 28, 2026
**Respond By:** November 24, 2026
**Identifier:** BC235366
**NAICS:** 541330

The Cowichan Valley Regional District is seeking engineering assessments to compare large-scale water storage options for Xwulqw’selu (Koksilah).
- **Government buyer:** Cowichan Valley Regional District (CVRD); no specific sub-agency or office is identified.
- **Requested services:** Assess storage capacity for three options and prepare Class D cost estimates for storage and distribution infrastructure.
  - Grant Lake, assuming a dam at the lake outlet.
  - Two gravel extraction pits, using excavation and waterproof liners.
- **Scope flexibility:** The assessment scope may be adjusted if an alternative storage option is identified.
- **OEMs and vendors:** None named; no manufactured products or product part numbers are specified.

### Description

The Cowichan Valley Regional District invites proposals for engineering assessments of large-scale water storage options for Xwulqw’selu (Koksilah). The work focuses on Grant Lake and gravel extraction pits and will assess the available storage for three options. Deliverables include Class D cost estimates for storage and distribution infrastructure. Provisional assessments cover Grant Lake assuming a dam at the lake outlet and two extraction pits using excavation and waterproof liners; the scope may be adjusted if an alternative option is identified.

[View original listing](https://canadabuys.canada.ca/en/tender-opportunities/tender-notice/bc235366)