Berm dredging ponds1/10/2024 A staff gauge is essentially a large and waterproof measuring board that attaches in sections until you hit the bottom of the pond. At least once every six months, use a staff gauge to see where the muck and silt begins. If nothing else, record the depth of various parts of the pond during construction to establish baseline measurements. It’s important to measure the original topography of the pond with sonar or level rods immediately after it’s built to keep a record of the desired depth. Keeping trash and debris off of the surface of the water and out of the muck at the bottom is also essential for a healthy, attractive, clog-free retention pond. This increases the chances that a heavy rainfall will overwhelm its holding capacity and flood the surrounding area. Allowing silt to build up reduces the pond’s total volume rapidly. Oversized and less used ponds may be able to stretch out the dredging procedures to once every few years, but active and flood-prone ponds definitely need at least an annual cleaning. Retention ponds need cleaning and plant trimming every few months, but they also need a full dredging for silt removal at least once every year.
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