Low edges occur when sections of the liner around a pond or stream sink or shift, allowing water to escape over the liner and leak out. Here’s how to locate and fix these problem areas:
Step 1: Identify the Low Edge
- Inspect the Pond or Stream Edges:
- Walk around the perimeter of the pond or stream.
- Look for wet areas or pooling water outside the liner, which may indicate a low spot.
- Expose the Liner:
- Clear away any rocks, soil, or decorative materials that may be hiding the edge of the liner.
- Visually inspect to ensure the liner is above the waterline.
Step 2: Locate and Confirm Low Areas
- Check for Sunken Edges:
- Identify areas where the liner dips below the water level.
- Use a level or your waterline as a reference to determine where the liner is too low.
- Mark the Low Spots:
- Mark these areas for repair, especially if there are multiple low edges along the perimeter.
Step 3: Repair the Low Edge
- Dig Behind the Low Edge:
- Carefully excavate the soil or backfill material behind the low section of the liner to expose and free it.
- Pull the Liner Up:
- Gently pull the liner upward to raise it above the water level.
- Ensure the liner extends at least 2–3 inches (5–8 cm) above the waterline to prevent future leaks.
- Reinforce the Edge:
- Backfill the area behind the liner with soil or appropriate fill material to hold it in place.
- Compact the backfill to prevent future settling and maintain the liner’s position.
Step 4: Finalize and Test
- Restore the Edging Materials:
- Replace any rocks, soil, or decorative elements removed during the repair process.
- Ensure the liner remains securely positioned and supported.
- Monitor for Leaks:
- Observe the water level over the next few days to confirm the repair has resolved the issue.
Preventative Measures
- Regular Inspections: Periodically check the pond and stream edges for any signs of sinking or low spots.
- Proper Backfilling: During initial construction, ensure edges are well-compacted and stable to minimize future settling.
- Seasonal Adjustments: Inspect edges after heavy rain or freezing weather, as these conditions can cause soil to shift and lead to low edges.
By addressing low edges and ensuring the liner is securely positioned above the waterline, you can prevent water loss and maintain the pond’s functionality.