Rock Island Lake water level today
Reservoir in Douglas, Washington · Columbia River
611.84ft
186.49 m · NGVD29
Measured · provisional
Much below normal for the date
What this means
It is lower than on Oct 21 in 7 of the last 10 years.
The lake has fallen 0.12 ft in 7 days and fallen 0.10 ft in 30 days.
Since 1990, the lowest daily level was 606.86 ft (Mar 2014) and the highest 613.01 ft (Jan 1997).
Rock Island 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 | 611.82 ft | ▼ 0.02 ft |
| Oct 21, 2024 | 611.84 ft | 0.00 ft |
| Oct 21, 2023 | 612.06 ft | ▲ 0.22 ft |
| Oct 21, 2022 | 611.98 ft | ▲ 0.14 ft |
| Oct 21, 2021 | 611.79 ft | ▼ 0.05 ft |
| Oct 21, 2020 | 612.22 ft | ▲ 0.38 ft |
| Oct 21, 2019 | 612.65 ft | ▲ 0.81 ft |
| Oct 21, 2018 | 612.74 ft | ▲ 0.90 ft |
| Oct 21, 2017 | 612.82 ft | ▲ 0.98 ft |
| Oct 21, 2016 | 612.73 ft | ▲ 0.89 ft |
Records & details
- Highest
- 613.01 ft on Jan 23, 1997
- Lowest
- 606.86 ft on Mar 4, 2014
- Records from
- 1990 (37 years of daily data)
- Inflow
- 49,590 cfs (1,404.2 m³/s)
- Outflow
- 64,400 cfs (1,823.6 m³/s)
- Water temperature
- Not measured here
Weather & wind
This Afternoon70°F · Sunny
Wind SE 5 mph
Wind SE 5 mph
Tonight43°F · Mostly Clear
Wind NE 3 mph
Wind NE 3 mph
Thursday71°F · Mostly Sunny
Wind W 0 to 7 mph
Wind W 0 to 7 mph
Thursday Night42°F · Partly Cloudy
Wind NW 7 to 29 mph
Wind NW 7 to 29 mph
Friday67°F · Sunny
Wind NW 6 to 26 mph
Wind NW 6 to 26 mph
Friday Night35°F · Mostly Clear
Wind NW 1 to 8 mph
Wind NW 1 to 8 mph
NOAA National Weather Service forecast for this lake's location, updated 1 h ago.