Hopkinton Lake water level today
Reservoir in Merrimack, New Hampshire · Contoocook River
382.22ft
116.50 m
Measured · provisional
Normal for the dateSteady
What this means
It is lower than on Oct 21 in 5 of the last 10 years.
The lake has fallen 0.37 ft in 7 days and risen 1.70 ft in 30 days.
Since 1996, the lowest daily level was 378.87 ft (Aug 2020) and the highest 407.29 ft (Apr 2007).
Hopkinton 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 21, 2025 | 380.87 ft | ▼ 1.35 ft |
| Oct 21, 2024 | 382.87 ft | ▲ 0.65 ft |
| Oct 21, 2023 | 380.30 ft | ▼ 1.92 ft |
| Oct 21, 2022 | 382.06 ft | ▼ 0.16 ft |
| Oct 21, 2021 | 383.03 ft | ▲ 0.81 ft |
| Oct 21, 2020 | 382.41 ft | ▲ 0.19 ft |
| Oct 21, 2019 | 383.09 ft | ▲ 0.87 ft |
| Oct 21, 2018 | 384.43 ft | ▲ 2.21 ft |
| Oct 21, 2017 | 380.74 ft | ▼ 1.48 ft |
| Oct 21, 2016 | 381.36 ft | ▼ 0.86 ft |
Records & details
- Highest
- 407.29 ft on Apr 18, 2007
- Lowest
- 378.87 ft on Aug 16, 2020
- Records from
- 1996 (30 years of daily data)
- Inflow
- 377 cfs (10.7 m³/s)
- Outflow
- 373 cfs (10.6 m³/s)
- Water temperature
- Not measured here
Weather & wind
This Afternoon60°F · Mostly Sunny
Wind NE 5 mph
Wind NE 5 mph
Tonight33°F · Patchy Fog
Wind 0 mph
Wind 0 mph
Thursday62°F · Patchy Fog then Mostly Sunny
Wind NW 5 to 10 mph
Wind NW 5 to 10 mph
Thursday Night30°F · Clear
Wind NW 5 to 10 mph
Wind NW 5 to 10 mph
Friday55°F · Sunny
Wind NW 5 mph
Wind NW 5 mph
Friday Night27°F · Mostly Clear
Wind NW 0 to 5 mph
Wind NW 0 to 5 mph
NOAA National Weather Service forecast for this lake's location, updated 56 min ago.