Revere-08H
Revere, Townline Brook
42.433704, -71.018815
Technical Specifications
Basic Properties
- Type
- Flap Gate
- Material
- Metal
- Control
- —
- Condition
- —
- Geometry
- Rectangular
- Status
- Active
- Number of Gates
- 0
Operator & Management
- Operator Type
- —
- Operator
- DOT and DCR are co-permitees
- Permits
- —
- Purpose
- Flood Protection
Dimensions & Elevations
- Dimensions
- —
- Invert Elevation
- —
- Installation Date
- —
- Tidal Influence
- —
Culvert Details
- Restriction Type
- Roadway
- Geometry
- Rectangular
- Material
- Concrete
- Bottom Material
- —
- Number of Pipes
- 0
- Dimensions
- —
- Condition
- —
- Comments
- Based on photos, it is unclear how many culverts are present at the site and what their dimensions are. A photo of the upstream end of the restriction shows that there are 15 metal trash grates installed at a concrete headwall while the tide gates are installed at the downstream headwall.
Salt Marsh Field Assessment Results
Comprehensive field assessment dataPhysical Conditions Assessment
Channel Conditions
- Channel Alteration and Ditching
- Severe (>398 ft/acre)
- Channel Constriction
- Equal to channel
- Channel Erosion
- Little (<10% of bank)
- Sediment Deposits
- None
Blockages
- Debris Blockages
- Limited (<10% of opening)
- Evidence of Overtopping
- No
Ecological Assessment
Habitat Observations
- Ecological Impairment due to Tide Gate
- None
- Crab Burrow Intensity
- None
- Ponding and Die-off Depressions
- None
- Phragmites Present
- Limited (<10%)
Invasive Species
- Upstream Invasive Species
- Yes
- Downstream Invasive Species
- Yes
- Invasive Species Notes
- Phragmites mostly related to stormwater outlets and weeping hillside.
General Comments
Upstream has been completely channelized with portions of reinforced bank all the way to the next upstream crossings. No upstream marsh exists due to steep channel banks except for small pockets along areas of more gradual bank. Downstream side inaccessible due to state highway.Habitat Transects
First Transect (50 yards upstream of tide gate)
Second Transect (150 yards upstream of tide gate)
Third Transect (300 yards upstream of tide gate)
Restoration Potential
Assessment
- Salt Marsh Impairment due to Tidal Restriction
- Moderate
- Potential Extent of Marsh Restoration
- Moderate
- Implementation Feasibility
- High
- Restoration Priority
- High
- Recommended Improvement Type
- O&M and Infrastructure
Notes
Site shows moderate salt marsh impairment due to restricted tidal flow. Replacement with self-regulating tide gate could restore approximately 5-8 acres of degraded marsh habitat. Good access for construction equipment. Regional coordination completed with town DPW and conservation commission.Historical Records
Environmental Data
- Invasive Species
- Yes
- Restoration Status
- In-Progress
- Invasive Comments
- Perennial pepperweed, phragmites, and others.
- Restoration Comments
- —
- Upstream Area
- Total: 40
Notes & Comments
- General Comments
- Site is located off of Route 1 to the northeast of the Showcase cinemas.
- Operation Plan
- —
- Operation Comments
- —
- Gate Comments
- There are three (3) metal self regulating tide gates (SRTs) installed at the site and an additional eight (8) conventional metal flap gates. The SRTs are located at the southernmost end of the headwall. The conventional metal flap gates are present for flood protection while the SRTs are installed to provide flood protection and restoration. Based on plans and photos it appears that the dimensions of the 3 SRT's are approximately 6' by 6'. Dimensions of the flap gates are unknown, but also appear to be on the order of 6' by 6'. As of 11/4/2015, the central SRT (Revere-08B) was missing the bottom float and not operational. Tidal leakage was also observed at and around the conventional flap gates.
- Elevation Comments
- —
- Visit Comments
- —
- Other Comments
- Upstream affected area is approximate.
- External Data Comments
- —
Part of the Massachusetts Bays Program© 2026 Massachusetts Bays Program. Monitoring tidegates across Massachusetts.