Design with Shallow Areas Near the Edge
When designing a pond, ensure that the area near the edge is shallow for a longer distance. This allows fish to swim closer to the edge without being pulled over, offering a path back to deeper water if they get too close.
Use a Small Pool or Pocket Below a Negative Edge
In ponds with a negative edge, creating a small pocket or pool at the bottom where water collects (using a bib liner or other techniques) can help catch fish that accidentally fall over the edge. This small pool provides a safe space for the fish to recover and avoid harm.
Understand Fish Behavior
Some fish, particularly koi, are naturally attracted to currents. They often enjoy swimming in the current created by waterfalls or spillways, and in some cases, they might go too close to the edge. To prevent them from going over, make sure the design includes areas where the fish can retreat back to safety if they venture too close to the edge.
By considering the design and these adjustments, you can reduce the likelihood of fish falling over a Negative edge waterfall, ensuring their safety while maintaining the function of the water feature.