Weymouth-03
Weymouth, Back River
42.229620, -70.927716
Technical Specifications
Basic Properties
- Type
- Tide Gate
- Material
- —
- Control
- —
- Condition
- —
- Geometry
- —
- Status
- Proposed
- Number of Gates
- 0
Operator & Management
- Operator Type
- —
- Operator
- —
- Permits
- —
- Purpose
- —
Dimensions & Elevations
- Dimensions
- —
- Invert Elevation
- —
- Installation Date
- —
- Tidal Influence
- —
Culvert Details
- Restriction Type
- Footpath
- Geometry
- Circular
- Material
- Corrugated Metal
- Bottom Material
- —
- Number of Pipes
- 0
- Dimensions
- 3ft diameter
- Condition
- Poor
- Comments
- It very poor condition - has rusted out in parts creating large sinkholes in the roadway and on the footpath.
Salt Marsh Field Assessment Results
Comprehensive field assessment dataPhysical Conditions Assessment
Channel Conditions
- Channel Alteration and Ditching
- Moderate (133-398 ft/acre)
- Channel Constriction
- Narrower than channel
- Channel Erosion
- Moderate (10-60% of bank)
- Sediment Deposits
- None
Blockages
- Debris Blockages
- None
- Evidence of Overtopping
- No
Ecological Assessment
Habitat Observations
- Ecological Impairment due to Tide Gate
- Moderate
- Crab Burrow Intensity
- None
- Ponding and Die-off Depressions
- None
- Phragmites Present
- Moderate (10-60%)
Invasive Species
- Upstream Invasive Species
- Yes
- Downstream Invasive Species
- Yes
- Invasive Species Notes
- Phragmites is growing along channel.
General Comments
Channel width, phragmites presence and lack of low marsh community indicate some tidal constriction. Tide gate has been removed so culvert may be undersized. A healthy high marsh community exists further upstream at the top of the phragmites lined channel..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
- —
- Invasive Comments
- Phragmites seen upstream
- Restoration Comments
- —
- Upstream Area
- —
Notes & Comments
- General Comments
- Weymouth is proposing to daylight the culvert at the end of Puritan Road in Great Esker Park.
- Operation Plan
- —
- Operation Comments
- No tide gate seen at this location - it was an open flow through under the road and foot path from the marsh to the Back River.
- Gate Comments
- —
- Elevation Comments
- —
- Visit Comments
- —
- Other Comments
- —
- External Data Comments
- —
Part of the Massachusetts Bays Program© 2026 Massachusetts Bays Program. Monitoring tidegates across Massachusetts.