Ephemeral Forest Pools a.k.a. Vernal Pools

Vernal ponds are temporary wetlands that fill with water each Spring. They are seasonal breeding and feeding grounds for many amphibians, reptiles, insects, birds, and mammals. Some of these animals need the pools for breeding while others rely on them for food.

The word “vernal” comes from the Latin word for spring, vernalis.

Vernal ponds are formed each year in the late winter or early spring. A shallow ground depression fills with spring snowmelt, precipitation, and the rising water table. They are generally less than 40 yards in diameter and no more than 4 feet deep.