HomeMy WebLinkAboutLong Pond Fish Passage Slides 10-27-2026Long Pond Outlet
Fish Passage
Improvement Project
Barnstable Conservation Commission Hearing
Tuesday, October 27, 2026
DEP File No. 003-6419
1
Project Location
2
Project Purpose
3
Outlet flow is currently managed with sandbags
The proposed concrete weir and board system will
ensure positive flow and allow fine-tuned flow
adjustments that will result in more effective
diadromous fish passage to Long Pond and up to
Wequaquet Lake, which are prime spawning and
nursery habitat for river herring and American eel
Resource Areas
4
•Inland Bank
•Fish Run
•Intermittent Stream, so no LUW or
Riverfront Area
•Within NHESP Priority Habitat but not
Estimated Habitats for Rare Wildlife
•Within 500-year flood plain, not BLSF
Project Summary
5
Installation of a fish passage
improvement structure
•Reinforced concrete weir with
flashboards
•Boulder and vegetation
reinforcement to tie into the
natural ground
•Log revetments anchored in the
soil at the toe of the bank
•Rounded river stone and rock weir
Impacts to Bank
6
70 cubic yards of material excavated from a 340
square foot area for concrete weir installation
15 feet of stone downstream of the concrete
weir for scour protection
Anchoring logs into the toe of bank for a length
of 25-feet of bank on each side
Minimizing Impacts
7
•TOY restrictions and funding limit work to June 1 – August 31, 2027
•Construction will occur when the stream is dry
•Sediment controls of compost filter socks around excavated
material stockpiles and disturbed areas upgradient of Long Pond
•Tree protection fencing and tree armor
•Filter bags will be used during dewatering
•Excavated material will be used to backfill the newly installed
concrete weir, excess material will be disposed of offsite
•Refueling will be conducted within a raised berm area greater than
50 feet from sensitive water bodies and storm drain inlets
•Disturbed bank areas will be revegetated with native shrubs and a
native grass/forb seed mix and mulched with a biodegradable
matting for stabilization
DEP Comments
8
Sent October 23, 2026
•DMF Fishway Construction Permit
•Applicant will submit after WPA process is complete
•Time of Year (TOY) restrictions
•March 15 - June 30 and September 1 - November 15
•Construction was proposed June 2 – August 31
•Construction dates will be adjusted to July 1 – Aug 31
•Refueling offsite or onsite with adequate containment and clean up
material
•Refueling onsite is proposed
•Within a raised berm area
•Greater than 50 feet from sensitive areas
•On-site spill kits
Barnstable
Wetlands
Regulations
9
Activity in the 100-foot buffer zone (§704-3)
A. This Regulation shall not be construed to preclude the following
activities, any of which may be permitted at the Commission’s
discretion, and without accompanying requirement for mitigation
planting:... (5) The construction of water dependent facilities as
defined in 704-2(F) herein.
This project qualifies as a water dependent facility
The project involves revegetating the Bank and construction area
The Applicant requests that the Commission waive the
requirement for mitigation planting
Discussion
10