Hempstead Lake water level today
Lake in Nassau County, New York
21.14ft
6.44 m · NAVD88
Measured · provisional
Steady
24 hours
▼ 0.05 ft
7 days
▼ 0.34 ft
30 days
▲ 0.03 ft
What this means
It is lower than on Oct 24 in 1 of the last 4 years.
The lake has fallen 0.34 ft in 7 days and risen 0.03 ft in 30 days.
Since 2022, the lowest daily level was 18.23 ft (Sep 2022) and the highest 23.81 ft (Dec 2023).
Hempstead Lake level chart
Loading chart…
Measured
Normal range for the date (middle 50% of past years)
Same date in past years
| Date | Level | vs today |
|---|---|---|
| Oct 24, 2025 | 19.89 ft | ▼ 1.25 ft |
| Oct 24, 2024 | 19.22 ft | ▼ 1.92 ft |
| Oct 24, 2023 | 22.86 ft | ▲ 1.72 ft |
| Oct 24, 2022 | 19.53 ft | ▼ 1.61 ft |
Records & details
- Highest
- 23.81 ft on Dec 12, 2023
- Lowest
- 18.23 ft on Sep 30, 2022
- Records from
- 2022 (4 years of daily data)
- Water temperature
- Not measured here
Hempstead Lake Dam
- Height
- 24 ft
- Completed
- 1873
- Purposes
- Recreation
- Owner
- NYS OFFICE OF PARKS, RECREATION & HISTORIC PRESERVATION- LONG ISLAND REGION
- Normal storage
- 470 acre-ft
- Surface area
- 149 acres
National Inventory of Dams (U.S. Army Corps of Engineers).
Weather & wind
Tonight43°F · Mostly Clear
Wind NE 5 mph
Wind NE 5 mph
Saturday62°F · Partly Sunny
Wind NW 5 mph
Wind NW 5 mph
Saturday Night43°F · Mostly Clear
Wind W 3 mph
Wind W 3 mph
Sunday65°F · Sunny
Wind W 5 mph
Wind W 5 mph
Sunday Night47°F · Clear
Wind SW 5 mph
Wind SW 5 mph
Monday68°F · Sunny
Wind W 7 mph
Wind W 7 mph
NOAA National Weather Service forecast for this lake's location, updated 16 min ago.