Hogback Lake Diversion Dam
Overview
Slope Stability & Erosion Control
In May 2023, Advanced Geotechnical Solutions (AGS) conducted subsurface exploration and geotechnical testing at the Hogback Lake Diversion Dam site. This work supported a broader floodplain study and assessed the stability of the existing diversion dam and surrounding slopes.
Key project components included:
- 5 soil borings across the project area
- Laboratory testing, including:
- Moisture content
- Sieve analysis
- Plasticity index
- Direct shear & triaxial shear
- Consolidation & crumb testing
AGS delivered detailed recommendations to improve slope stability, control erosion, and address concerns with the diversion channel’s structural integrity.
Key Challenges
- Steep, unstable slopes in the diversion channel
- Active erosion threatening long-term performance
- Existing channel not considered stable under current conditions
Solutions
To mitigate these issues, AGS recommended:
- Slope stabilization through grading to shallower angles or use of retaining structures
- Erosion protection using:
- Imported riprap stone
- Precast concrete mats
- Fabric-formed concrete blankets
- Structural assessments of the existing dam and diversion channels
Results
AGS’s recommendations will guide future work to enhance dam stability and support safer, more resilient floodplain infrastructure in the Hogback Lake area.
Let’s Talk
Have a challenging dam, floodplain, or slope stabilization project?
Advanced Geotechnical Solutions brings technical precision and field-tested solutions.
Contact us today to get started.
