Storm Surge & Critical Infrastructure on NantucketBrian Bach Cece Cotter Matt Lepine Sean ReganSponsor: Dave Fronzuto,Nantucket Emergency Management AgencyProject Liaison: Peter Morrison

Nature of the Problem Our Mission Study Area Our Approach Risk Assessment Mitigation Tactics Priorities Deliverables Takeaways

Overview

https://twitter.com/cjmcmahon_NH/status/262994275829174273/photo/1?ref_src=twsrc%5Etfw

Nature of the Problem

http://www.nhc.noaa.gov/surge/

http://phys.org/news/2014-03-anthropocene.html

Nantucket

Lower Broad Street to Steamboat WharfLower Broad Street / Easy Street

Evaluate & Identify the best approachesthe Town of Nantucket can take toprotect its critical infrastructurefrom damage due tostorm surge.

Our Mission

Built Infrastructure:Easy Street Bulkhead

Finance Department

Harbormaster’s Office / Marine Department

Natural Resources Department

NRTA / Health Department

Post Office

Sheriff’s Office

Stop & Shop

Town Administrative Building

U.S. Coast Guard Station

Transportation:Children’s Beach Boat Ramp

Easy Street

Francis Street

Harbor View Way

Lower Broad Street

Steamboat Wharf

Straight Wharf

Tanker Dock

Town Parking Lot

Washington Street

Utilities:Candle Street Substation

Children’s Beach Stormwater Pump Station

Goose Pond Sewer Main

Sea Street Pump Station

Union Street Telephone Building

Our Approach

Risk Assessment

Finance Department

Elevation Floodproofing

Dry & Wet Methods Relocation of

Function

Mitigation Tactics

RecommendationsNon-Relocatable Infrastructure: Elevate

Candle Street Substation

Easy Street Bulkhead Sea Street Pump

Station Steamboat Wharf Stormwater Pump

Station Straight Wharf Tanker Dock

Non-Relocatable Infrastructure: Floodproof

Post Office Stop & Shop

RecommendationsRelocatable Infrastructure: Elevate

Harbormaster’s Office / Marine Department

Natural Resources Department

Sheriff’s Office U.S. Coast Guard

Station

Relocation of Function:

Finance Department Town Administrative

Building

Recommendations

Roads:

Easton Street Easy Street Francis Street Harbor View Way Lower Broad Street Washington Street

No Further Action:

Children’s Beach Boat Ramp

Goose Pond Sewer Main

NRTA / Health Department

Telephone Building Town Parking Lot

Priorities

#1 - Sea Street Pump Station

#2 - Candle Street Substation

Summary Database

GIS Database

Be proactive, especially near the coast Check FEMA Flood Maps Get surveyed

Begin planning immediately

Expand to the rest of the island

Takeaways

Emphasized the issue of storm surge

Highlighted critical infrastructure

Recommended mitigation tactics

Identified future steps

Summary

Frank Holdgate

Peter Morrison

Dominic Golding

Reinhold Ludwig

Dave Fronzuto

Acknowledgements