There are numerous important issues that must be addressed in order to maintain the Poilão Dam in the longterm and to maximize the efficiency of water use for irrigation in the region. However, after evaluating our strengths as a team and the needs of our community partners, our team has decided to direct our energy toward addressing soil erosion on the slopes of the dam impoundment.
When the dam was constructed, soil was dug out of the hillsides in order to create a basin for the reservoir. Consequently, the slopes of the hillsides surrounding the dam have begun to erode significantly. Soil erosion is a threat to the longevity and functionality of the dam because the soil can silt up the dam and reduce its ability to store water. Soil erosion also leads to a loss of potentially productive land and topsoil.
Our team will explore a range of techniques to mitigate soil erosion on the slopes surrounding the dam. Some strategies that we may explore include soil bioengineering, such as terracing, mulching, and revegetation.
Check out our blog periodically to see our progress!
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