What is the maximum desired height for check dams used in grass channels?

The maximum desired height for check dams used in grass channels is 12-18 inches. This height range is effective for managing stormwater runoff by slowing down the flow velocity, promoting sediment deposition, and helping to maintain the integrity of the channel.

Check dams are typically constructed in grass-lined channels to reduce erosion and control water flow. When constructed within this height range, they effectively create small pools that can enhance water infiltration into the soil, thereby reducing surface runoff and helping to recharge groundwater.

If the check dams were too high, they might risk causing overtopping during intense rainfall events, leading to potential erosion and failure of both the dam and the grass channel. Staying within the 12-18 inches range ensures that the check dams are functional without compromising the stability and performance of the surrounding landscape.