The map
Lake Ontario (Lake America) Map
Toggle each layer on or off. Live layers pull from the lake-data worker on a schedule and show "data unavailable" instead of a guess when a source is down.
Map layers
Water TemperatureBuoy readings, NOAA NDBC
Water LevelsStation gauges, datum as published
Waves & Marine ForecastNOAA NDBC buoy, NWS open lake zones
WebcamsPublic shoreline cameras
BeachesLive status by beach
DepthRochester Basin reference point, no map coordinates yet
Marinas & LaunchesNY DEC and NOAA ENC data
Fishing ChartersBy home port, no map coordinates yet
Base tiles. OpenStreetMap, no paid tile service.
Refresh. Conditions layers poll the lake-data worker on a cron schedule, about every 30 minutes.
Depth reference. 802 ft max, Rochester Basin, west of Oswego.
802 ft
Maximum depth, Rochester Basin
Source: Britannica, NOAA bathymetry chart
7,340 sq mi
Surface area
Source: Britannica
193 x 53 mi
Length by maximum width
Source: Britannica
1,722 sq mi
Lake Ontario National Marine Sanctuary
Source: NOAA Office of National Marine Sanctuaries