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Coastal Wetland Adaptation Strategies
SLAMM Municipal Workshops October 28th and 30th, 2014
Caitlin Chaffee Wenley Ferguson
Adaptation Strategies • Upland
– Adopt activities that facilitate marsh migration – Change/move land use activities that inhibit marsh
migration – Remove physical barriers
• In-Marsh – Drainage improvements (small creek excavation) – Elevation enhancement – Erosion control along marsh edge
Winnapaug Pond Marsh, Westerly Marsh migration occurring yet impounded water creating mosquito breeding habitat
Round Marsh, Jamestown
Old farm path impediment to marsh migration into red maple swamp
Marsh migrating into field
Colt State Park, Bristol
Marsh after path moved
1996: marsh mowed
Bike path relocated in late 1990s and “mow line” moved inland
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2
Opportunity to move mow line inland to allow wetland forming behind beach to migrate inland
Seapowet Point, Tiverton
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Jamiel Park, Warren
Tidal creek under Market St
Potential area for marsh migration if vehicular access changed to Wood Street
Kickemuit River adaptation opportunities
Kickemuit Reservoir Dam: vulnerable to storm surge; future site for marsh migration
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Potential area to limit vehicular access
2
Edgewater Drive, Apponaug Cove, Warwick
Flooding during a moon tide
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Ponded water at low tide
2
Coldwell Street, Warwick
Land protection of small lots required for low lying road to be closed to vehicle access
In marsh adaptation • Small creeks and runnels excavation
– Partners include: municipalities, land trusts, Save The Bay and RIDEM Mosquito Abatement Program
– STB provides project design development, permit preparation, organization of volunteers for “dig days”, and restoration monitoring
– RIDEM provides low ground pressure equipment and operator if necessary
– CRMC Habitat Fund and NRCS has provided funding – Projects range from $5,000 to $15,000