TideGateway

Quincy-06

Fenno Street Gate

Quincy, Black's Creek

42.272440, -71.001211

Technical Specifications

Basic Properties

Type
Flap Gate
Material
Metal
Condition
Good
Geometry
Circular
Status
Inactive
Number of Gates
0

Operator & Management

Operator Type
PUBLIC
Operator
Town of Quincy
Purpose
Flood Protection

Dimensions & Elevations

Dimensions
1.5ft diameter
Installation Date
2013

Culvert Details

Restriction Type
Roadway
Geometry
Circular
Material
Corrugated Metal
Number of Pipes
0
Dimensions
1.5ft diameter
Condition
Fair
Comments
Downstream end of culvert was plastic (HDPE) and upstream end of culvert was corrugated metal. Downstream end of culvert appeared to be in good condition; however, upstream end was partially buried, thereby potentially limiting stormwater conveyance capacity.

2024 Field Survey Results

Comprehensive field assessment conducted in 2024

Physical Conditions Assessment

Channel Conditions

Channel Alteration
Moderate (133-398 ft/acre)
Channel Constriction
Narrower than channel
Channel Erosion
Moderate (10-60% of bank)
Sediment Deposits
Limited (<10% of channel width)

Blockages & Issues

Debris Blockages
None
Evidence of Overtopping
No

Transect Measurements

50 Yards

Open Water
1
Salt Marsh
58
Brackish
24
Freshwater
0
Ditch
0
Unvegetated
0

150 Yards

Open Water
2
Salt Marsh
107
Brackish
5
Freshwater
0
Ditch
0
Unvegetated
0

300 Yards

Open Water
2
Salt Marsh
92
Brackish
30
Freshwater
0
Ditch
0
Unvegetated
0

Ecological Assessment

Habitat Observations

Crab Burrow Intensity
Limited (<10% banks are densely
Ponding Depressions
Limited(<10% of marsh platform
Phragmites Present
Moderate (10-60%)
Ecological Impairment
Limited

Invasive Species

Upstream Invasive Species
Yes
Downstream Invasive Species
Yes
Invasive Species Notes
Phragmites along upland border and pockets within marsh.
Additional Comments (2024)
Operation appears to have increased since the last inspection as the upstream end has been excavated and phragmites has been pushed back, allowing abundant low and high marsh to exist. Erosion may be lessened if the culvert is widened but marsh is in good condition otherwise.

Historical Records

Legacy data from previous surveys and documentation

Environmental Data

Invasive Species
Yes
Restoration Status
Not Applicable
Invasive Comments
Flap gate limited all tidal flow. As a result, freshwater grasses and Phragmites were observed upstream.
Restoration Comments
At the time of the site visit, no known restoration efforts had been undertaken. The upstream area was large and appeared to have significant restoration potential. A number of homes were observed adjacent to the impoundment which might limit restoration options due to potential flooding.

Notes & Comments

General Comments
The tide gate is located approximately 100 feet south from the intersection of Fenno Street and Quincy Shore Drive, in a covered drain manhole. Flap Valve at Fenno St was removed, last Friday August 19. This was apparently done by order of Mayor Koch. There is now tidal flow into (and out of) the Princess Eve Marsh (previously referred to as 'Fenno St Marsh'). Not a total cure for the Princess Eve Marsh, but it is certainly a positive step. Regards, -Richard Joyce Quincy
Operation Plan
No
Operation Comments
Tide gate was installed in 2013 (approximate) as part of an open marsh water management project. The purpose of the tide gate is to fully exclude any upstream tidal inundation.
Gate Comments
Tide gate was recently installed and appeared to be in good condition and operable. Flapper removed in August 2016 by order of the Mayor.
Elevation Comments
Staining could not be assessed at upstream or downstream end. In addition, no headwalls were present so invert elevation measurements were not obtained.
External Data Comments
US ACOE Fenno St. Comments on Permit NAE-2012-2284 (Other)
© 2025 Massachusetts Bays Program. Monitoring tidegates across Massachusetts.