👉 In the context of environmental science and ecology, "overwash" refers to a process where water is transferred from a source into a body of water due to evaporation, which occurs when water vapor rises above the surface. This can happen naturally or through human activities such as irrigation systems, rainwater harvesting, or industrial processes. Overwashes are often associated with soil erosion and runoff, which can alter the physical characteristics of the ground and affect plant growth. In extreme cases, overwash events can