Marshes, streams, and ponds aren't the only wetlands governed by the law. Some wetland resources lack standing water. Wetlands are any lands where the soil is saturated for a significant portion of the growing season. Just because water pools occasionally in the early spring does not automatically make an area a wetland. Conversely, an area may be a wetland even if there is never standing water there. Even if a project isn't in a wetland, a project near a wetland can degrade that wetland by increasing siltation and runoff. For this reason, the Commission has jurisdiction over all work, including landscaping and brush-cutting, in any wetland resource area and within 100 feet of a wetland.