| Title: Projected Groundwater Rise Caused by Sea-Level Rise in New Hampshire | |
| Time Period of Content: 2016 | Initial Publication Date: 04/16/2019 |
| Originator: Jayne F. Knott, University of New Hampshire, Department of Civil & Environmental Engineering, Ph. D. Candidate | |
| Abstract: The database contains projected groundwater rise caused by sea-level rise in the NH Seacoast region. The sea-level rise (SLR) scenarios are 1, 2, 4, 6, and 8 feet relative to the mean sea level (MSL) measured at the Fort Point tide gage in New Castle, NH. A regional groundwater flow model created by Thomas Mack of the U.S. Geological Survey (USGS) in 2009 was updated and modified to investigate groundwater changes caused by SLR. Groundwater elevations for MSL and the SLR scenarios were calculated using USGS MODFLOW-2005. Groundwater rise was calculated by taking the difference between the simulated groundwater elevation for each SLR scenario and the groundwater elevation at MSL. Mean sea level is defined as 0.31 feet below NAVD88 measured at the Fort Point tide gage in 2016. The boundaries of the resource are the Gulf of Maine to the East, the Piscataqua Estuary to the North, the Squamscott River to the West, and the New Hampshire/Massachusetts border to the South. Groundwater rise is also expected to occur along coastlines outside the bounds of this resource. | |
| Theme Keywords: sea-level rise, groundwater rise | |
| Full Metadata and Data Download | |