Mapper
Level of Effort:
The USGS Compound Flooding map is an interactive tool developed by the U.S. Geological Survey’s New York Water Science Center that helps users explore the combined risk of multiple flooding drivers across the New York and Long Island coastal region, including Long Island Sound watersheds. Compound flooding refers to flooding that happens when more than one type of water hazard occurs at the same time for example, heavy rainfall, high tides or storm surge, and rising groundwater which can lead to more severe and widespread inundation than from any single cause alone. This type of flooding is increasingly relevant as sea level rise and intense storms interact with land and groundwater conditions.
The map visually displays hazard rankings and spatial patterns of flood drivers so that planners, emergency managers, researchers, and the public can better understand where overlapping flood risks are most significant. It supports local decision making for flood mitigation, coastal planning, and resilience strategies by showing how precipitation, coastal flooding, and groundwater emergence can coincide to create elevated threat levels. The site is grounded in ongoing USGS research into regional flood processes and compound flood hazards, with data useful for watershed planning, infrastructure assessment, and risk communication
Mapper
Level of Effort:
The USGS Compound Flooding map is an interactive tool developed by the U.S. Geological Survey’s New York Water Science Center that helps users explore the combined risk of multiple flooding drivers across the New York and Long Island coastal region, including Long Island Sound watersheds. Compound flooding refers to flooding that happens when more than one type of water hazard occurs at the same time for example, heavy rainfall, high tides or storm surge, and rising groundwater which can lead to more severe and widespread inundation than from any single cause alone. This type of flooding is increasingly relevant as sea level rise and intense storms interact with land and groundwater conditions.
The map visually displays hazard rankings and spatial patterns of flood drivers so that planners, emergency managers, researchers, and the public can better understand where overlapping flood risks are most significant. It supports local decision making for flood mitigation, coastal planning, and resilience strategies by showing how precipitation, coastal flooding, and groundwater emergence can coincide to create elevated threat levels. The site is grounded in ongoing USGS research into regional flood processes and compound flood hazards, with data useful for watershed planning, infrastructure assessment, and risk communication
Events
UConn CLEAR is offering a series of engaging webinars this winter, including an in-depth session on Connecticut’s ongoing Lidar and orthoimagery project. This presentation will explore the statewide effort that began in 2022 and continues through 2026. Speakers from Dewberry will explain the data products created from the 2023 acquisition and highlight how these datasets are being used in planning, mapping, environmental analysis, and other geospatial applications. The session is designed to help participants understand the importance of high quality elevation and imagery data in supporting statewide decision making.
The webinar will also discuss potential uses for these datasets in the coming years and provide a preview of the planned 2026 acquisition and delivery. Participants will gain insight into how Lidar and orthoimagery support climate resilience work, infrastructure planning, land use analysis, and broader environmental assessments. This session is open to anyone interested in geospatial data, statewide imagery, or Connecticut’s evolving GIS resources, and registration is available through UConn CLEAR.
Events
UConn CLEAR is offering a series of engaging webinars this winter, including an in-depth session on Connecticut’s ongoing Lidar and orthoimagery project. This presentation will explore the statewide effort that began in 2022 and continues through 2026. Speakers from Dewberry will explain the data products created from the 2023 acquisition and highlight how these datasets are being used in planning, mapping, environmental analysis, and other geospatial applications. The session is designed to help participants understand the importance of high quality elevation and imagery data in supporting statewide decision making.
The webinar will also discuss potential uses for these datasets in the coming years and provide a preview of the planned 2026 acquisition and delivery. Participants will gain insight into how Lidar and orthoimagery support climate resilience work, infrastructure planning, land use analysis, and broader environmental assessments. This session is open to anyone interested in geospatial data, statewide imagery, or Connecticut’s evolving GIS resources, and registration is available through UConn CLEAR.
Events
This UConn CLEAR webinar provides an updated overview of Connecticut’s ongoing statewide Lidar and orthoimagery project. Dewberry’s technical team will introduce the data products generated from the 2023 acquisition and explain how these datasets are being used across environmental planning, land management, infrastructure mapping, and community decision-making. The session is designed to help participants understand the value of high resolution elevation and imagery data and how these resources support public agencies, researchers, and local communities.
The webinar will also look ahead to the 2026 phase of the project, offering insight into expected updates, new deliverables, and potential applications for longterm statewide planning. Attendees will gain a stronger understanding of how Lidar and orthoimagery fit into Connecticut’s geospatial data strategy and how these datasets can support climate resilience, hazard mapping, and improved environmental analysis. This session is open to anyone interested in GIS, remote sensing, or the state’s evolving geospatial data resources.
Events
This UConn CLEAR webinar provides an updated overview of Connecticut’s ongoing statewide Lidar and orthoimagery project. Dewberry’s technical team will introduce the data products generated from the 2023 acquisition and explain how these datasets are being used across environmental planning, land management, infrastructure mapping, and community decision-making. The session is designed to help participants understand the value of high resolution elevation and imagery data and how these resources support public agencies, researchers, and local communities.
The webinar will also look ahead to the 2026 phase of the project, offering insight into expected updates, new deliverables, and potential applications for longterm statewide planning. Attendees will gain a stronger understanding of how Lidar and orthoimagery fit into Connecticut’s geospatial data strategy and how these datasets can support climate resilience, hazard mapping, and improved environmental analysis. This session is open to anyone interested in GIS, remote sensing, or the state’s evolving geospatial data resources.
Resources & Tools
