If precipitation exceeds evaporation then water can run off the hillsides and form standing water in the depressions or on a larger scale can form lakes of various sizes if it is normal for precipitation to exceed evaporation for most of the year.
If precipitation exceeds evaporation, water can run off and form wetlands.
Explanation:
If in case the precipitation increases and transcends the rate of evaporation, the water that pours down through rains would ultimately run off to the oceans and would result in frequent coastal flooding.
This flooding would result in the formation of wetlands along the low-lying coasts due to the consistent penetrating action of the seawater into the coasts.
This flooding would increase with rising sea level and also cause the high-lying coasts to turn into wetlands.
