With a grant from the New Hampshire Department of Environmental Services Coastal Program, SRPC, in partnership with Geosyntec and the University of New Hampshire, prepared planning-level potential flood inundation maps for the mainstem of the Lamprey, North, Little, and Oyster Rivers within the Town of Lee. Two versions of the potential flood inundation maps were created; 1) an existing land use condition map (based on 2005 land use condition) and 2) a 2050 build out condition map for the 24-hour, 100-year flood. several identified potential current and future conditions. Planning-level flood elevations and maps prepared as part of this project may be used for flood hazard and mitigation planning purposes, but are not a detailed flood study including detailed survey that would be suitable for use in generation of Federal Emergency Management Association (FEMA)-level Flood Insurance Rate Maps (FIRMs) or used by other insurance agencies for flood insurance purposes. The models developed under this project may be refined in the future as more data becomes available to further refine model output and resulting flooding maps.
SRPC has been working with the Lee Town Planner and the Planning Board to draft amendments to the Town’s current Floodplain Ordinance that incorporate new floodplain data to help strengthen floodplain management for future storm events. This data is based on current land use conditions, uses projected climate change models and future precipitation estimates, and offers more accurate delineated boundaries than the current FEMA Flood Insurance Rate Maps (FIRMS). SRPC and the Planning Board are using the state’s updated floodplain model as a guide to review the town’s current floodplain development ordinance and determine whether or not the design standards in their regulations are strong enough to mitigate against flood impacts associated with higher peak flood discharge and flood water surface elevations.
Funding through a NOAA Project of Special Merit award has enabled the New Hampshire Department of Environmental Services (NHDES) Coastal Program to partner with SRPC, Rockingham Planning Commission, the University of New Hampshire (UNH), UNH Cooperative Extension/New Hampshire Sea Grant, and Studio NaCl to do the following:
The project, Using Science, Building Social Capital, and Unpacking Tax Incentives for a Resilient Coastal NH, will enable SRPC to serve as a member of the 2019 Science and Technical Advisory Panel (STAP) and contribute to the update of New Hampshire's Coastal Flood Risk Science Summary and Guidance. SRPC will also contribute to future implementation of Senate Bill 185, which extends the community tax relief program (79E-4) to coastal properties subject to storm surge, sea level rise, and extreme precipitation.
The kick-off meeting for the project and the 2019 STAP was held on Friday, Nov. 2. The original 2014 STAP report Sea-Level Rise, Storm Surges, and Extreme Precipitation in Coastal New Hampshire: Analysis of Past and Project Future Trends is being updated as required by RSA 483-B:22. The report was developed as a science-based framework for the NH Coastal Risk and Hazards Commission (CRHC). The CRHC was established by the New Hampshire Legislature through RSA 483-E on July 2, 2013, and expired in December 2016. The Commission’s work is documented in the 2016 report Preparing New Hampshire for Projected Storm Surge, Sea-Level Rise, and Extreme Precipitation.
At the November STAP meeting, panel members and stakeholders reviewed goals and objectives along with the proposed work plan/time line for the 2019 report. They also clarified the panel’s roles and responsibilities and considered how to obtain and present input on the proposed vision for the 2019 Coastal Flood Risk Science Summary and Guidance.
The Dover Rising Waters initiative is a group of volunteer citizens working to implement climate actions identified in the city's master plan. Its first undertaking, the High Water Mark Project, seeks to engage community members in proposing and implementing public art projects that convey future flood risks as sea levels rise and extreme precipitation events become more frequent and intense. The goal of the project will be visualized through public art projects in Dover that spark community conversations about the impacts of flooding and rising sea levels.
The first round of the High Water Mark Project focused on youth art in the form of a public contest. A winning project proposal was selected and a location was identified (see the flyer for more information). The final version of the mural was unveiled at the Feb. 20, 2019, ribbon-cutting for the City of Dover's new solar array atop the pool and NH Children's Museum. Artist Sofia Self can be seen with the mural here.
The mural was placed in its permanent location on in April 2019. See the image here.
Additional rounds will focus on professional artists and other interested parties.
Learn more about the project by viewing the "Using Art To Spark Climate Conversations" flyer.
ARCHIVED HIGH WATER MARK CONTEST DETAILS:
NH Setting SAIL is a regional project involving the 10 inland coastal communities. It is intended to support state and municipal implementation of the NH Coastal Risk and Hazards Commission (CRHC) report through funding for outreach and technical assistance.
Beginning with a project kick-off meeting in March 2017, Kyle Pimental, principal regional planner, in partnership with staffers from NH Seagrant, the New Hampshire Department of Environmental Services Coastal Program, Rockingham Planning Commission, the Climate Adaptation Workgroup (CAW), UNH Cooperative Extension, and the Great Bay National Estuarine Research Reserve, assisted communities on a variety of projects related to climate adaptation.
Dover enlisted Kyle to assist with the creation of a climate adaptation master plan chapter. This process began with the formation of a steering committee in April 2017. The plan was adopted in February 2018 after an extensive public input process that involved two workshops and a community survey.
In Madbury, Kyle worked in partnership with UNH Cooperative Extension and NH Seagrant to identify potential hazards related to climate adaptation. The town held a workshop in fall 2017, which Kyle facilitated along with his project partners.
The town of Rollinsford, with technical assistance from SRPC, researched potential funding sources for culvert upgrades. This research included an audit of past applications and communications with state and federal agencies to determine why the town may not have received funding in the past. Kyle assisted the town in the development of a letter of intent, and a framework for future applications.
SRPC provided technical assistance to Durham as it considered sea level rise scenarios and how the town can plan for this in its existing local floodplain regulations.
Newmarket updated its stormwater regulations with assistance from SRPC.
Beginning in June 2016, SRPC partnered with UNH Ph.D student Jayne Knott to complete the Groundwater Modeling of Saltwater Intrusion project in Newmarket. This project was funded by a local source water, and assessed drinking water vulnerability to sea level rise and associated salt water intrusion in the Town of Newmarket.
Deliverables of the project include a computer model and sea-level-rise projections based on different identified scenarios, and a final report, Sea-Level Rise Impacts on Drinking Water: A Groundwater Modeling Study in Newmarket, NH. GIS Planner Rachael Mack and Principal Regional Planner Kyle Pimental presented on the project to the Newmarket Planning Board in June 2017. The final report was approved in June 2016 and can be found at http://new.strafford.org/cmsAdmin/uploads/final_groundwater-modeling-report_001.pdf.
Through the NH Department of Environmental Services, and as a project of special merit, SRPC is currently working on a project entitled Climate Risk in the Seacoast (C-RiSe): Assessing Vulnerability of Municipal Assets and Resources to Climate Change.
This project will develop maps and assessments of flood impacts to the built and natural environment associated with projected increases in storm surge, sea level, and precipitation for ten Great Bay municipalities. Project components include:
This projects will be completed in Spring of 2017.
Partner Organizations: New Hampshire Department of Environmental Services Coastal Program, NH GRANIT, Rockingham Planning Commission and UNH Stormwater Center.
The C-RiSe project is funded by the National Oceanic and Atmospheric Administration under the Coastal Zone Management Act (CZMA) Enhancement Program Projects of Special Merit for FY 2015, authorized under Section 309 of the CZMA (16 U.S.C. § 1456b).
|Map 1: Extent of Projected Tidal Flooding - SLR 1.7', 4.0' and 6.3'||Rollinsford||Madbury||Durham||Dover||Newmarket|
|Map 2: Extent of Projected Tidal Flooding - SLR + Storm Surge||Rollinsford||Madbury||Durham||Dover||Newmarket|
|Map 3: Critical Facilities and Infrastructure - SLR 1.7', 4.0' and 6.3'||Rollinsford||Madbury||Durham||Dover||Newmarket|
|Map 4: Critical Facilities and Infrastructure - SLR + Storm Surge||Rollinsford||Madbury||Durham||Dover||Newmarket|
|Map 5: Roads and Transportation Assets - SLR 1.7', 4.0' and 6.3'||Rollinsford||Madbury||Durham||Dover||Newmarket|
|Map 6: Roads and Transportation Assets - SLR + Storm Surge||Rollinsford||Madbury||Durham||Dover||Newmarket|
|Map 7: Land Resources - SLR 1.7', 4.0' and 6.3'||Rollinsford||Madbury||Durham||Dover||Newmarket|
|Map 8: Land Resources - SLR + Storm Surge||Rollinsford||Madbury||Durham||Dover||Newmarket|
|Map 9: Water Resources - SLR 1.7', 4.0' and 6.3'||Rollinsford||Madbury||Durham||Dover||Newmarket|
|Map 10: Water Resources - SLR + Storm Surge||Rollinsford||Madbury||Durham||Dover||Newmarket|
|Map 11: Climate Ready Culverts - SLR 1.7', 4.0' and 6.3'||Rollinsford||Madbury||Durham||Dover||Newmarket|
|Map 12: Climate Ready Culverts - SLR + Storm Surge||Rollinsford||Madbury||Durham||Dover||Newmarket|
Beginning in the Fall of 2015 SRPC began collaborating with N.H. Sea Grant and UNH Cooperative Extension to plan a program for middle schoolers relative to the effects of climate change. Following this planning process staff from SRPC, NH Sea Grant and UNH Cooperative Extension met with teachers at Oyster River Middle School to get feedback on their ideas, and to discuss how teachers could address topics as part of their curriculum to prepare students for a discussion on climate change and its effects.
In Spring of 2016 Principal Regional Planner Kyle Pimental worked alongside Chris Keeley of N.H. Sea Grant/UNH Cooperative Extension, Amanda Stone of UNH Cooperative Extension and a class of Oyster River Middle School students and teachers to dive into these topics. Their presentation to two middle school classes included supplemental information on climate change and an exercise encouraging students to brainstorm how climate change will affect their communities.
This process culminated with a presentation at the Durham Library allowing student to share what they had learned with their parents and other community members.
As part of Local Solutions for the Strafford Region, Strafford Regional Planning Commission adopted a Climate Change Impacts and Adaptation Appendix in January of 2015. The Climate Change Impacts and Adaptation appendix discusses observed and projected climate change in Southern New Hampshire and the impacts climate change will have on our communities.It dentifies appropriate adaptation strategies to protect assets and address vulnerabilities in the region. This appendix includes an overview of climate change projections in the region and a discussion of both impacts and adaptation strategies in six planning sectors: built environment, human health, water resources, natural systems, agriculture, and society.
This appendix includes several maps at a community and regional level that highlight the vulnerability of critical infrastructure, community assets, and populations. A suite of federal, state, and local programs and resources is included to serve as guidance for communities that seek to increase resiliency to the projected increases in temperature, extreme precipitation events, and sea level and flooding anticipated in this region.
The information, tools, and adaptation strategies provided in this document are intended to assist communities with reducing vulnerability to climate change and proactively responding to the impacts that increases in temperature, extreme precipitation events, and sea level rise will have on the built environment and quality of life.
View an overview of the Climate Change Impacts and Adaptation appendix here.
As explained by the Town of Durham on their website, "the purpose of this project [Climate Adaptation Chapter] was to: conduct research on present climate change and sea level rise estimates using the Piscataqua/Great Bay Report as a backbone; review approaches taken by other states, communities, and agencies in responding to this threat; develop a series of maps identifying areas of increased risk to flooding due to sea level rise specific to Durham; develop strategies that protect areas at risk from flooding due to climate change and sea level rise; and identify various regulatory and non-regulatory options that can be considered by the Town."With funding from the New Hampshire Coastal Program, Strafford Regional Planning Commission (SRPC) provided assistance to the Town of Durham to develop a climate adaptation chapter. This chapter is an appendix to the Durham Hazard Mitigation Plan, and provides adaptation strategies to protect areas of town that are at risk of flooding due to climate change.
Climate Change Impacts and Adaptation [Adopted 1/2015] [PDF; 4,825 KB ]
Dover Rising Waters Youth Art Contest Submission Form [PDF 06/01/2018]
Dover Rising Waters Youth Art Contest Permission Form [PDF 06/01/2018]
Dover Rising Waters Art Contest Flyer [PDF 06/01/2018]
Dover Rising Waters Art Contest Guidelines [PDF 06/18/2018]
Dover Rising Waters Handout [PDF 10/20/2018]
Lee Floodplain Study 2005 FEMA Delineations (24x36) [PDF, 6.77MB December 23, 2019]
Lee Floodplain Study 2005 100 Year Storm Estimates (24x36) [PDF, 6.3MB December 23, 2019]
Lee Floodplain Study 2050 100 Year Storm Estimates (24x36) [PDF, 6.79MB December 23, 2019]
Strafford Regional Planning Commission
150 Wakefield Street, Suite 12
Rochester, New Hampshire 03867
Tel: (603) 994-3500 Fax: (603)994-3504