Rowley-01A
Rowley, North Pool
42.744239, -70.803628
Technical Specifications
Basic Properties
- Type
- Sluice Gate
- Material
- Metal
- Control
- Manual Gear
- Condition
- Fair
- Geometry
- Rectangular
- Status
- Active
- Number of Gates
- 0
Operator & Management
- Operator Type
- PUBLIC
- Operator
- USFWS
- Permits
- ACOE
- Purpose
- Other
Dimensions & Elevations
- Dimensions
- —
- Invert Elevation
- —
- Installation Date
- 1987
- Tidal Influence
- —
Culvert Details
- Restriction Type
- Berm
- Geometry
- Rectangular
- Material
- Concrete
- Bottom Material
- —
- Number of Pipes
- 0
- Dimensions
- 3ft diameter, 3ft height
- Condition
- Fair
- Comments
- —
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
- Proposed
- Invasive Comments
- Phragmites -- treated 3-5 year cycle, loosestrife present but somewhat in check by beetles.
- Restoration Comments
- Restoration is possible and is currently being evaluated. Extensive data is being collected for future modeling scenarios. Monitoring is being established to analyze changing conditions with sea level rise.
- Upstream Area
- —
Notes & Comments
- General Comments
- Tide gate located at the Parker River National Wildlife Refuge at a berm not accessible by the general public. USFWS must be contacted to obtain access. Followups - USFWS can provide additional details with a field visit including tide gate and culvert dimensions, invert elevations, upstream acreage, and photos.
- Operation Plan
- Yes
- Operation Comments
- The tide gate is occasionally operated for vegetation control and other management needs. It was installed for waterfowl breeding management; however. this is no longer an objective. The impoundment is currently managed for marsh and wading birds. There is no specific operational plan for the tide gate - it is adjusted as needed per the Refuge's annual habitat work plan.
- Gate Comments
- Tide gate is a rectangular metal screw gate with the potential to be fit with a plank stop log. It was installed in the 1980's - exact date unknown. The condition of the tide gate is fair - it does not create a tight seal and there is significant water movement around the gate.
- Elevation Comments
- —
- Visit Comments
- —
- Other Comments
- —
- External Data Comments
- US ACOE CENED-OD-R-24-85-229 Permit 9.9.1987
Part of the Massachusetts Bays Program© 2026 Massachusetts Bays Program. Monitoring tidegates across Massachusetts.