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Service Description: SLR inundation zones were created by NOAA using a “modified bathtub” model. This model uses a 2011 Digital Elevation Model (DEM) where water level rises based on the surrounding topography, and a tidal surface model (VDatum) which adjusts the water levels for tidal differences at different points in Rhode Island; for example at the top and the bottom of Narragansett Bay. To be consistent with other projects on SLR in Rhode Island, we have selected three scenarios to map: 1 foot of SLR, 3 feet of SLR, and 5 feet of SLR. The SLR scenarios add 1, 3, or 5 feet on top of the average daily high tide; also referred to as Mean Higher High Water (MHHW).
Rhode Island faces sea level rise (SLR), an increasing number of extreme weather events, rising tides, and warmer temperatures due to climate change. These changes will affect our state’s transportation network, and the more proactive we can be about identifying vulnerabilities, the greater chance we have to make wise decisions about our investments in transportation infrastructure.
The SLR inundation data was enhanced by the Statewide Planning Program through careful review of areas with uncertain hydrological connections and areas disconnected by a dam's height. Ortho and oblique aerial imagery was viewed, along with the RIGIS streams and dams dataset, to determine whether there was a possible hydrological connection or disconnect from coastal water SLR. There are some areas hydrological connections are uncertain. These areas were reviewed to the maximum extent possible given project constraints. Areas where there is an uncertain hydrological connection can be found in the 'SLR_Uncertain_RIDOP' dataset also available on RIGIS. Note that SLR is distinct from storm surge in that SLR is a gradual and permanent change, while storm surge is a sudden and temporary change. Storm surge was not included in this model. LAYERFILES AVAILABLE: All SLR Levels.lyr : Shows the extention of all SLR inundation levels; MHHW, 1 foot, 3 foot, and 5 foot1 ft SLR.lyr : Shows MHHW with areas inundated by 1 foot of SLR3 ft SLR. lyr : Shows MHHW with areas inundated by 3 feet of SLR5 ft SLR. lyr : Shows MHHW with areas inundated by 5 feet of SLR.
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Copyright Text: URI EDC, RIGIS; RI Dept. of Administration, Division of Planning; NOAA
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Comments: SLR inundation zones were created by NOAA using a “modified bathtub” model. This model uses a 2011 Digital Elevation Model (DEM) where water level rises based on the surrounding topography, and a tidal surface model (VDatum) which adjusts the water levels for tidal differences at different points in Rhode Island; for example at the top and the bottom of Narragansett Bay. To be consistent with other projects on SLR in Rhode Island, we have selected three scenarios to map: 1 foot of SLR, 3 feet of SLR, and 5 feet of SLR. The SLR scenarios add 1, 3, or 5 feet on top of the average daily high tide; also referred to as Mean Higher High Water (MHHW).
Rhode Island faces sea level rise (SLR), an increasing number of extreme weather events, rising tides, and warmer temperatures due to climate change. These changes will affect our state’s transportation network, and the more proactive we can be about identifying vulnerabilities, the greater chance we have to make wise decisions about our investments in transportation infrastructure.
The SLR inundation data was enhanced by the Statewide Planning Program through careful review of areas with uncertain hydrological connections and areas disconnected by a dam's height. Ortho and oblique aerial imagery was viewed, along with the RIGIS streams and dams dataset, to determine whether there was a possible hydrological connection or disconnect from coastal water SLR. There are some areas hydrological connections are uncertain. These areas were reviewed to the maximum extent possible given project constraints. Areas where there is an uncertain hydrological connection can be found in the 'SLR_Uncertain_RIDOP' dataset also available on RIGIS. Note that SLR is distinct from storm surge in that SLR is a gradual and permanent change, while storm surge is a sudden and temporary change. Storm surge was not included in this model. LAYERFILES AVAILABLE: All SLR Levels.lyr : Shows the extention of all SLR inundation levels; MHHW, 1 foot, 3 foot, and 5 foot1 ft SLR.lyr : Shows MHHW with areas inundated by 1 foot of SLR3 ft SLR. lyr : Shows MHHW with areas inundated by 3 feet of SLR5 ft SLR. lyr : Shows MHHW with areas inundated by 5 feet of SLR.
Subject: Sea Level Rise scenarios for Rhode Island utilizing 2011 LiDAR and VDatum to adjust water levels to tidal differences throughout the state.
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Keywords: PLAN,RIGIS,RI,Rhode Island,SLR,sea level rise,coastal,inundation,MHHW
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