Hempstead Lake is at 20.8 ft and fell 0.0 ft in the last day.
Current Water Level
20.8 ft
6.33 m · Lake surface elevation
Compared with the reading at Nov 2, 6:00 AM
Delayed- Measured
- Nov 3, 2026 6:00 AM EST
- Retrieved
- Nov 3, 2026 2:50 PM EST
- Data Source
- USGS (opens in a new tab)
- Datum
- NAVD 88
Water Level Chart
Lake surface elevation from Oct 27, 2026 to Nov 3, 2026: started at 21.01 ft and ended at 20.76 ft; low 20.76 ft, high 21.01 ft.
Gaps in the line are periods with no readings; they are not filled in. View data table
24 Hour Change
−0.03 ft (falling)
from 20.79 ft on Nov 2
7 Day Change
−0.25 ft (falling)
from 21.01 ft on Oct 27
30 Day Change
n/a change not available
No comparable reading
Conditions & Warnings
Forecast
A current forecast is not available right now. Open the NWS forecast
Water Temperature
No official water temperature gauge is linked to this lake.
Weather warnings have not been checked for this lake yet. Always check weather.gov before going out on the water.
About Hempstead Lake
A description of this lake has not been written yet.
Hempstead Lake Location
Hempstead LakeNassau County, New York
Map location is approximate. Map data © OpenStreetMap contributors.
Compare & Share
Compare with other lakesOfficial Source & Methodology
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Lake surface elevation
U.S. Geological Survey Water Data · ID
0131079450· NAVD 88 Official page
The headline number is the lake surface elevation reported by U.S. Geological Survey Water Data (typically every 15 minutes (provisional data)). The "Measured" time is when the agency recorded it; "Retrieved" is when this site last downloaded it.
Recent readings are provisional and may be revised by the agency. Wind, waves and dam operations can change the level between readings. This page is not a flood warning or navigation service; for safety information contact the lake operator and the National Weather Service.
Gauge verified 2026-10-28: HEMPSTEAD LAKE AT HEMPSTEAD NY read 20.96 ft. Coordinates are the gauge location. Confirm reference levels with the operator before publishing.