Steps to Finding a Leak When There Are Two Streams or Two Biofalls

When a pond system has two streams or Biofalls, finding a leak requires isolating each feature to determine which one is causing the issue. Follow these steps:

Step 1: Isolate Each Stream or Biofalls

1. Determine Pump Configuration:
   • Separate Pumps:
     • If each stream or Biofalls is operated by its own pump, turn one pump off while leaving the other on.
     • Observe the water level and look for signs of leaking.
     • Switch the pumps (turn one off and the other on) to test the other stream or Biofalls.
   • Single Pump:
     • If one pump operates both streams or Biofalls, check if there are ball valves installed in-line to control water flow.
       • Close the ball valve to one stream or Biofalls to isolate it.
       • Observe the water level and switch the valve positions to isolate the other stream or Biofalls.
2. If No Ball Valves Are Present:
   • Temporarily cap the inside of the Biofalls or stream inlet to stop water from flowing into that feature.
   • Test each stream or Biofalls independently to identify which one is causing the leak.

Step 2: Inspect the Isolated Feature

1. Check for Low Edges:
   • Walk along the edges of the stream or Biofalls that is still running.
   • Look for areas where water may be escaping over a low edge of the liner.
2. Look for Obstructions or Dams:
   • Inspect for debris, such as leaves, plant material, or rocks, that may be blocking water flow and causing it to back up and spill over the liner.
3. Examine the Liner:
   • Carefully check the exposed liner for tears, punctures, or wear that may be allowing water to escape.

Step 3: Repeat for the Other Stream or Biofalls

1. Once the first feature has been tested, isolate the other stream or Biofalls using the same method (e.g., ball valves, capping, or turning pumps on/off).
2. Inspect the second feature for similar issues, such as low edges, obstructions, or liner damage.

Step 4: Repair the Leak

1. Once the problematic stream or Biofalls is identified:
   • Address low edges by lifting and backfilling the liner.
   • Remove obstructions or repair any tears or punctures in the liner.
2. Test the repaired feature by running water through it and observing for further leaks.

Step 5: Reassemble and Monitor

1. After resolving the issue, restore the flow to both streams or Biofalls.
2. Replace any rocks, gravel, or decorative elements disturbed during the process.
3. Monitor the water level over the next several days to ensure the repair is successful.

Tips for Success

• Mark Problem Areas: Use flags or markers to note any low edges or suspected leak spots during inspection.
• Use Temporary Plugs: Caps or plugs can help block flow to specific areas for testing.
• Regular Maintenance: Inspect edges and liners periodically to catch leaks early.

By systematically isolating each feature and inspecting for common leak sources, you can efficiently identify and repair the problem area.