Standing water exists in several forms, e.g., as small ephemeral ponds that dry up in the summer months or in times of drought, as small pools and ponds that often need management to persist, as larger permanent lakes or as coastal lagoons. These different types of standing water are outlined briefly in the sections below. An ongoing increase in recreational activities and the increased risk of algal blooms (as a consequence of increasing summer temperatures) are issues common to all lakes.