Groynes are often thought of as one end of a rock sill. Deflecting or repelling groynes are often used to push water away from severely eroding banks. Sediment often builds up between the groynes where a succession of grasses, bushes and eventually trees grow. Groynes are often installed as part of a bank stabilization effort to further increase fish habitat while controlling stream flow direction and velocity.
The KWRC and our partners have provided the Kennebecasis Watershed with 54 groyne structures.
- Control flow direction and velocity on hardened stream banks to reduce risk of downstream erosion
- Increase fish habitat
- Improve stream channel stability