Final Report - VHB.com

grocery store. The size of the pond is approximately 0.3 acre and outlets to a large
scrub-shrub/forested wetlands.
A large scrub-shrub/forested wetland (wetland 1-7) is located in a valley between
two large commercially developed parcels. Beaver flowage is found in central areas
of the wetland, which receives flow from a perennial stream that originates on the
NASB. The perennial stream meanders through the wetland, which outlets to a
culvert under US Route 1. Prior to construction of US Route 1, this wetland was part
of a larger wetland system located on the north side of US Route 1.
Located on the western end of the Study Area is a large floodplain forest (wetland 1-
8) that receives flow from multiple perennial streams. Most of the area consists of
forested wetland habitat, with a strip of emergent wetland extending west along US
Route 1. The wetland outlets via a culvert into a small emergent wetland on the north
side of US Route 1.
Two additional wetlands (wetland 1-9 and 1-10), located on the NASB, were not
visited in the field due to their location on the base, but they are clearly visible in
aerial photographs. Both wetlands are relatively small systems (i.e., less than 2 acres)
and consist primarily of open-water habitat. The wetlands are connected by a
perennial stream that originates on the southernmost wetlands and outlets under
Bath Road via a culvert. The stream provides flow to previously described wetlands
located on both the southern and northern sides of US Route 1.
Strategy 2A
NWI mapping indicated four small wetlands systems (wetland 2A-1and 2A-6) in the
Strategy 2A Study Area. The windshield-level survey located six small wetlands on
Lewiston Road, west of Exit 31. These wetlands consist of emergent, forested, and
open-water wetlands. The largest wetland (i.e., wetland 2A-4) occurs in an island of
forested wetlands area between the I-295 southbound on- and off-ramps. Two
perennial streams also are located in this area, both along the I-295 on- and off-ramps
at Exit 31.
The portion of the Study Area east of Exit 31 and Main Street (US Route 201) in
Topsham has experienced substantial development and contains relatively few
wetland resources. NWI mapping did not identify any wetland systems in this area;
however, the windshield-level survey identified two small emergent wetland
systems: (1) along the I-295 northbound on-ramp (wetland 2A-7); and (2) on the
south side of Lewiston Road at the outlet of a culverted perennial stream (wetland
2A-8).
On US Route 201 (Main Street) north of State Route 196, several wetlands (wetland
2A-9) were located in a utility-line corridor adjacent to the entrance of Mount Ararat
High School. These scrub-shrub/emergent wetland systems consist of areas of
goldenrod, raspberry, jewel weed, and various sedges, with patchy areas of alder
Existing Conditions 44