Truro-01

Truro, Wilder Dike

41.993627, -70.050371

Dimensions: 3ft diameter
Condition: Fair
Comments: It is a circular metal pipe coming under the road and into the upstream marsh - not accessible during the site visit.

Comprehensive field assessment conducted in 2024

Upstream Invasive Species: Yes
Downstream Invasive Species: Yes
Invasive Species Notes: Dense phragmites from channel to upland boundary.
Additional Comments (2024): Flapper tide gate appears to eliminate influence of incoming tide and only allows freshwater to exit as evident in upstream wetland which appears to be entirely freshwater and covered in phragmites. Sink hole on upstream end behind headwall. Town plans to replace tide gate with either a 30’ opening or two 10’ culverts with an additional third pipe fitted with tide gate for extreme flow events to restore tidal flushing. The next constriction upstream under route 6 will also be replaced.

Legacy data from previous surveys and documentation

Operation Comments: The flapper is open very slightly; roughly 15-30 degrees off of vertical.
Gate Comments: The dike is fitted with a flapper valve (tide gate) at the seaward end of a 3-ft culvert The flapper does shown signs of rust.

Other Comments: Retaining wall on the downstream side of the road with the tide gate is is poor condition.