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Madbury Prepares for extreme weather • Emergency Preparedness • Extreme Precipitation & Flooding • • Drought & Water Supply • What are the issues? EMERGENCY PREPAREDNESS Storms – rain, snow, wind, and ice – already pose challenges to residents and municipalities. Storm events are projected to increase in frequency and intensity in the future, so the need to prepare will become even more important. In addition, extreme heat days are expected to become more frequent during the summer, requiring a different type of emergency preparedness. Communities need to be able to take care of all residents, especially those most vulnerable to these impacts. EXTREME PRECIPITATION & FLOODING Heavy precipitation is expected to increase in frequency and intensity, causing more problems with flooding and putting people and infrastructure at risk. DROUGHT & WATER SUPPLY As temperatures rise, so does the likelihood of drought, which will influence drinking water supplies, water-based recreation, agriculture, and wildlife. By the numbers: What we can expect in NH by 2100 • 22-48 fewer days per year below 32°F (from the historical average of 154) 1 • 21-57 more days per year above 90°F (from to the historical average of 10) 1 • 4 to 9 o F increase in our annual average temperature by 2100 1 • An additional 1.6 to 6.6 feet of sea-level rise 2 • As much as 20% more annual precipitation, and more frequent extreme precipitation events 2 1 Climate Solutions New England 2014; values for Durham, NH, where available; compared to historical averages from 1980-2009 2 STAP Report 2014; compared to mean sea level in 1992 as a reference; compared to average annual rainfall from 1970-1999 Madbury is not especially vulnerable to flooding from sea-level rise and coastal storm surge, but the expected increase in heavy precipitation events will cause local issues. Even though the Town of Madbury itself may not be as vulnerable to certain impacts as some of its neighbors, the vulnerabilities of those neighboring communities may affect Madbury’s capacity and options for emergency response and evacuation. Water supply is another concern as Madbury and its neighboring communities see increasing demand for water as populations grow, in conjunction with hotter, dryer summers, less precipitation during the winter, and less infiltration due to the intensity of rainfall and expansion of impervious surfaces. Madbury’s natural resources will be impacted by some of these same issues. These resources, such as forests and wetlands, can provide protection for Madbury’s residents and infrastructure (in addition to their benefits for wildlife). For example, forests provide locally cooler temperatures, and wetlands and their surrounding buffers help mitigate flooding and protect water resources in the case of wetlands. But as climate change adds stress to ecosystems, they may not be able to provide those benefits as effectively in the future. What does this mean for Madbury?

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Page 1: MadburyPrepares for extreme weather - · PDF fileMadburyPrepares for extreme weather ... q Raise awareness about the town’s drinking water sources q Encourage water conservation

Madbury Prepares for extreme weather

• EmergencyPreparedness• ExtremePrecipitation&Flooding•• Drought&WaterSupply•

Whataretheissues?EMERGENCYPREPAREDNESS

Storms– rain,snow,wind,andice– alreadyposechallengestoresidentsandmunicipalities.Stormeventsareprojectedtoincreaseinfrequencyandintensityinthefuture,sotheneedtopreparewillbecomeevenmoreimportant.

Inaddition,extremeheatdaysareexpectedtobecomemorefrequentduringthesummer,requiringadifferenttypeofemergencypreparedness.Communitiesneedtobeabletotakecareofallresidents,especiallythosemostvulnerabletotheseimpacts.

EXTREMEPRECIPITATION&FLOODINGHeavyprecipitationisexpectedtoincreaseinfrequencyandintensity,causingmoreproblemswithfloodingandputtingpeopleandinfrastructureatrisk.

DROUGHT&WATERSUPPLY

Astemperaturesrise,sodoesthelikelihoodofdrought,whichwillinfluencedrinkingwatersupplies,water-basedrecreation,agriculture,andwildlife.

By the numbers: What we can expect in NH by 2100

• 22-48 fewerdaysperyearbelow32°F(fromthehistoricalaverageof154)1

• 21-57 moredaysperyearabove90°F(fromtothehistoricalaverageof10)1

• 4 to 9oF increaseinourannualaveragetemperatureby21001

• Anadditional1.6 to 6.6 feet ofsea-levelrise2

• As much as 20% moreannualprecipitation,andmorefrequentextremeprecipitationevents2

1ClimateSolutionsNewEngland2014;valuesforDurham,NH,whereavailable;comparedtohistoricalaveragesfrom1980-20092STAPReport2014;comparedtomeansealevelin1992asareference;comparedtoaverageannualrainfallfrom1970-1999

Madbury isnotespeciallyvulnerabletofloodingfromsea-levelriseandcoastalstormsurge,buttheexpectedincreaseinheavyprecipitationeventswillcauselocalissues.EventhoughtheTownofMadbury itselfmaynotbeasvulnerabletocertainimpactsassomeofitsneighbors,thevulnerabilitiesofthoseneighboringcommunitiesmayaffectMadbury’s capacityandoptionsforemergencyresponseandevacuation.

WatersupplyisanotherconcernasMadbury anditsneighboringcommunitiesseeincreasingdemandforwateraspopulationsgrow,inconjunctionwithhotter,dryersummers,lessprecipitationduringthewinter,andlessinfiltrationduetotheintensityofrainfallandexpansionofimpervioussurfaces.

Madbury’s naturalresourceswillbeimpactedbysomeofthesesameissues.Theseresources,suchasforestsandwetlands,canprovideprotectionforMadbury’s residentsandinfrastructure(inadditiontotheirbenefitsforwildlife).Forexample,forestsprovidelocallycoolertemperatures,andwetlandsandtheirsurroundingbuffershelpmitigatefloodingandprotectwaterresourcesinthecaseofwetlands.Butasclimatechangeaddsstresstoecosystems,theymaynotbeabletoprovidethosebenefitsaseffectivelyinthefuture.

WhatdoesthismeanforMadbury?

Page 2: MadburyPrepares for extreme weather - · PDF fileMadburyPrepares for extreme weather ... q Raise awareness about the town’s drinking water sources q Encourage water conservation

10 Ideas for Actionto prepare for extreme weather

EmergencyPreparedness

q Provideinformationaboutpotentialfloodhazardstoresidentsandbusinessesandimplementan earlywarningsystemforstorms

q Makesureevacuationplansareup-to-date,routesarewellmarked, andresidentshaveinstructionsonwhattodoinevacuationandisolation(shelter-in-place)situations

q Encourageneighborhood-widecommunicationandpreparationduringstorms

ExtremePrecipitation&Flooding

q Regulatefuturedevelopmentinthe100-yearfloodplainandencourageprotectivemeasuresforexistingdevelopmentinthefloodplain

q Conservelandinareasthatarevulnerabletofloodingq Implementbuffersbetweenwetlandsanddevelopmentq Ensurethatculvertsaresizedtodealwithgrowingratesofprecipitation

Drought&WaterSupply

q Raiseawarenessaboutthetown’sdrinkingwatersourcesq Encouragewaterconservationactions,suchasreducinguseandimplementingraingardens

andrainbarrelsq Conservelandaroundwaterresourcestoprotectqualityandquantity

ResourcesNH CoastalAdaptationWorkgroup:§ Visitourwebsite:www.nhcaw.org§ Signupforournewsletter: http://tinyurl.com/NHCAWnews§ Followusonsocialmedia(FacebookandInstagram:@nhcoastaladaptation /Twitter: @nhcaw)

§ MadburyClimate RiskintheSeacoast(C-RiSe)report(http://tinyurl.com/crise-Madbury)andmaps(http://www.strafford.org/services/climatechange.php)

§ NH CoastalRiskandHazardsCommission(CRHC)Report,2016:www.nhcrhc.org§ NH CRHCScienceandTechnicalAdvisoryPanelReport,2014:http://www.nhcrhc.org/stap-report/§ NHSettingSAILProject:http://www.nhcrhc.org/setting-sail/§ NH CoastalViewer:www.nhcoastalviewer.org§ ClimateSolutionsNewEngland. 2014.ClimateChangeinSouthernNewHampshire:Past,Present,

andFuture.http://tinyurl.com/southernNHclimate§ ReadyNH.gov: www.ReadyNH.gov

September2017Thisprojectwasfunded,inpart,byNOAA'sOfficeforCoastalManagementundertheCoastalZoneManagementActinconjunctionwiththeNHDepartmentofEnvironmentalServicesCoastalProgram.

Formoreinformation,contact:LisaGraichen,ClimateAdaptationProgramCoordinator,UNHCooperativeExtensionandNHSeaGrant,[email protected],(603)862-2356


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