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Flood inundation map geospatial datasets for Lake Ontario, New York

Metadata Updated: October 28, 2023

Static flood inundation boundary extents were created along the entire shoreline of Lake Ontario in Cayuga, Jefferson, Monroe, Niagara, Orleans, Oswego, and Wayne Counties in New York by using recently acquired (2007, 2010, 2014, and 2017) light detection and ranging (lidar) data. The flood inundation maps, accessible through the USGS Flood Inundation Mapping Program website at, depict estimates of the areal extent and water depth of shoreline flooding in 8 segments corresponding to adjacent water-surface elevations (stages) at the following 8 USGS lake gages on Lake Ontario: A – Lake Ontario (Thirtymile point) at Golden Hill State Park, NY (station number 04219796) B – Lake Ontario at Hamlin Beach State Park near North Hamlin, NY (station number 04220209) C – Lake Ontario at Braddock Heights, NY (station number 04220253) D – Lake Ontario at Ninemile Point near Webster, NY (station number 0423205342) E – Lake Ontario at Sodus Point, NY (station number 0423207760) F – Lake Ontario at Breakwater Light 2 near Fair Haven. NY (station number 04232093) G – Lake Ontario (Selkirk Shores) near Daysville Corner, NY (station number 04249071) H – Lake Ontario at Pier at Sackets Harbor, NY (station number 04250772) These datasets demonstrate the estimated extent and depth of lake flooding at specific water levels of 1-foot increments from 247.0 ft to 251.0 ft (International Great Lakes Datum of 1985). In this study, wind and seiche effects were not represented; therefore, the flood inundation maps reflect five stages for Lake Ontario that are static for the entire shoreline area of the lake. This data release is a package of flood inundation data for Lake Ontario including: 1) 1) 8 shapefiles showing 40 estimated flood extents as polygons, and 2) 2) 40 raster datasets showing the depth of the water at 5 flood stages, divided into 8 shoreline segments. The polygon flood extent shapefiles were developed from digital elevation models (DEMs) derived from the lidar to represent the estimated areal extent for five flood stages for the segments along the approximately 300-mile shoreline of Lake Ontario from the Coast Guard Station in Youngstown, N.Y. at the mouth of the Niagara River to Cape Vincent, N.Y. The raster files depict the depth, in feet (referenced to the International Great Lakes Datum of 1985), of the water in the inundated areas along the shoreline of Lake Ontario during the five theoretical flood stages. The depth grids were created by subtracting the digital elevation model (DEM) values (in feet) from each of five raster files representing the flood extent at each constant water level (in feet). An approximately 100-meter buffer was used as the extent into the lake, except for Segment H. Due to the numerous islands and shoreline complexity, the lidar collection extent was used for Segment H.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Created Date June 1, 2023
Metadata Updated Date October 28, 2023

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date October 28, 2023
Publisher U.S. Geological Survey
Identifier USGS:602e86b3d34eb120311556a9
Data Last Modified 20210621
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id cb797909-4009-4e0b-b199-0d731f21ecc5
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -79.0796,43.0729,-76.0419,44.1428
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash 6b6eaf0b25294bd674053a20d51faf109cd81937ac98b02a543e6f0bbd0aa6a5
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -79.0796, 43.0729, -79.0796, 44.1428, -76.0419, 44.1428, -76.0419, 43.0729, -79.0796, 43.0729}

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