During the downpour in a village, the rain water carried away excess of nitrogenous and other compounds present in the soil to a pond. How will they affect the growth of algae and phytoplankton in the pond?

During the downpour in a village, the rain water carried away excess of nitrogenous and other compounds present in the soil to a pond. Once the nutrients get absorbed in the pond water, it would acquire a high concentration of nitrates and phosphates which would result in the excessive growth of algae and phytoplankton in the pond.