Lake Washington Ship Canal water level today
Reservoir in King, Washington · Cedar River, Sammamish River
20.54ft
6.26 m · gauge reading (local datum, not an elevation)
Measured · provisional
Normal for the dateSteady
What this means
It is lower than on Oct 21 in 4 of the last 10 years.
The lake has risen 0.12 ft in 7 days and risen 0.35 ft in 30 days.
Since 2001, the lowest daily level was 19.94 ft (Aug 2015) and the highest 22.02 ft (May 2020).
Lake Washington Ship Canal 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 | 20.26 ft | ▼ 0.28 ft |
| Oct 21, 2024 | 20.37 ft | ▼ 0.17 ft |
| Oct 21, 2023 | 20.63 ft | ▲ 0.09 ft |
| Oct 21, 2022 | 20.19 ft | ▼ 0.35 ft |
| Oct 21, 2021 | 20.77 ft | ▲ 0.23 ft |
| Oct 21, 2020 | 20.72 ft | ▲ 0.18 ft |
| Oct 21, 2019 | 20.80 ft | ▲ 0.26 ft |
| Oct 21, 2018 | 20.35 ft | ▼ 0.19 ft |
| Oct 21, 2017 | 20.44 ft | ▼ 0.10 ft |
| Oct 21, 2016 | 20.46 ft | ▼ 0.08 ft |
Records & details
- Highest
- 22.02 ft on May 22, 2020
- Lowest
- 19.94 ft on Aug 28, 2015
- Records from
- 2001 (25 years of daily data)
- Inflow
- 569 cfs (16.1 m³/s)
- Outflow
- 220 cfs (6.22 m³/s)
- Water temperature
- Not measured here
Weather & wind
This Afternoon63°F · Sunny
Wind NW 3 mph
Wind NW 3 mph
Tonight48°F · Partly Cloudy
Wind NNE 5 mph
Wind NNE 5 mph
Thursday56°F · Mostly Sunny then Slight Chance Light Rain
Wind N 2 to 7 mph
Wind N 2 to 7 mph
Thursday Night47°F · Mostly Cloudy
Wind NNW 1 to 6 mph
Wind NNW 1 to 6 mph
Friday54°F · Mostly Sunny
Wind NNW 2 to 6 mph
Wind NNW 2 to 6 mph
Friday Night44°F · Partly Cloudy
Wind SE 2 mph
Wind SE 2 mph
NOAA National Weather Service forecast for this lake's location, updated 11 min ago.