Wetlands are diverse and not always visible to the eye. In Connecticut, they are defined by the chemical and physical characteristics of the first 18 to 24 inches of soil. According to the town’s zoning regulations a wetland is “any land area, including submerged land, which consists of any soil types generally designated as ‘poorly drained,’ ‘very poorly drained,’ ‘alluvial,’ and ‘flood plain’ by the National Cooperative Soils Survey … of the U.S. Department of Agriculture.”