Wellfleet-01
Wellfleet, Mayo Creek
41.930619, -70.029656
Technical Specifications
Basic Properties
- Type
- —
- Material
- Metal
- Control
- —
- Condition
- —
- Geometry
- Circular
- Status
- Active
- Number of Gates
- —
Operator & Management
- Operator Type
- PUBLIC
- Operator
- —
- Permits
- —
- Purpose
- —
Dimensions & Elevations
- Dimensions
- 2.5ft diameter
- Invert Elevation
- —
- Installation Date
- —
- Tidal Influence
- Upstream: -7.83 NAVD88, Downstream: -3.41 NAVD88
Culvert Details
- Restriction Type
- Roadway
- Geometry
- Circular
- Material
- Corrugated Metal
- Bottom Material
- —
- Number of Pipes
- 1
- Dimensions
- 2.5ft diameter
- Condition
- —
- Comments
- —
Salt Marsh Field Assessment Results
Comprehensive field assessment dataPhysical Conditions Assessment
Channel Conditions
- Channel Alteration and Ditching
- Limited (<133 ft/acre)
- Channel Constriction
- Narrower than channel
- Channel Erosion
- Moderate (10-60% of bank)
- Sediment Deposits
- Limited (<10% of channel width)
Blockages
- Debris Blockages
- Moderate (10-60% of opening)
- Evidence of Overtopping
- No
Ecological Assessment
Habitat Observations
- Ecological Impairment due to Tide Gate
- Severe
- Crab Burrow Intensity
- None
- Ponding and Die-off Depressions
- None
- Phragmites Present
- Severe (>60%)
Invasive Species
- Upstream Invasive Species
- Yes
- Downstream Invasive Species
- No
- Invasive Species Notes
- Phragmites is dominant plant species and provides full coverage from channel to upland boundary
General Comments
Duck bill tide gate has eliminated upstream tidal exchange. Area is almost entirely phragmites and appears to be more of a freshwater wetland than salt marsh.Habitat Transects
First Transect (50 yards upstream of tide gate)
No data
Second Transect (150 yards upstream of tide gate)
No data
Third Transect (300 yards upstream of tide gate)
No data
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
- —
- Restoration Status
- —
- Invasive Comments
- —
- Restoration Comments
- Feasibility study done in 2009-2010. Town working group convened in 2014 to plan restoration.
- Upstream Area
- Total: 19.33, Salt Marsh: 0
Notes & Comments
- General Comments
- —
- Operation Plan
- —
- Operation Comments
- —
- 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.