Weymouth-06
“Great Esker Park ”Weymouth, Weymouth Back River
42.241591, -70.932990
Technical Specifications
Basic Properties
- Type
- Sluice Gate
- Material
- Metal
- Control
- Manual Gear
- Condition
- Good
- Geometry
- Rectangular
- Status
- Active
- Number of Gates
- 1
Operator & Management
- Operator Type
- PUBLIC
- Operator
- —
- Permits
- ACOE
- Purpose
- Flood Protection
Dimensions & Elevations
- Dimensions
- 5ft diameter, 3ft height
- Invert Elevation
- —
- Installation Date
- 2014
- Tidal Influence
- —
Culvert Details
- Restriction Type
- Footpath
- Geometry
- Rectangular
- Material
- Concrete
- Bottom Material
- Riprap
- Number of Pipes
- 1
- Dimensions
- 5ft diameter, 3ft height
- Condition
- Good
- Comments
- —
Salt Marsh Field Assessment Results
Comprehensive field assessment dataPhysical Conditions Assessment
Channel Conditions
- Channel Alteration and Ditching
- Limited (<133 ft/acre)
- Channel Constriction
- Equal to 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
- Limited
- 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
- Along upland fringe and pushing into marsh.
General Comments
Low marsh is absent from both upstream and downstream side of tide gate so constriction may not be responsible. Culvert appears to be recently constructed and tide gate is left completely open the majority of the time.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 was abundant upstream and green crabs were observed in the rip rap around the sluice gate.
- Restoration Comments
- —
- Upstream Area
- —
Notes & Comments
- General Comments
- —
- Operation Plan
- —
- Operation Comments
- Tide gate fully open to 3'
- Gate Comments
- —
- Elevation Comments
- —
- Visit Comments
- —
- Other Comments
- —
- External Data Comments
- US ACOE NAE-2009-2635 Permit 7.2.2014 US ACOE NAE-2009-2635 Great Esker Park Sluice Gate Operation and Maintenance Plan 8.6.2014 MWRA Great Esker Park Annual Compliance Report 12.15.2014 MWRA Great Esker Park Annual Compliance Report 12.15.2015
Part of the Massachusetts Bays Program© 2026 Massachusetts Bays Program. Monitoring tidegates across Massachusetts.