OregonNatural lake, 2,824 acres, Douglas County
Diamond Lake water level
Current level
5,183.86ft NGVD29
Reading from Oct 25, 2026
Well above normal for October
- Past 24 hours
- -0.04ft
- Past 7 days
- -0.16ft
- Past 30 days
- -0.34ft
- vs typical October
- +0.39ft
Diamond Lake was at 5,183.86 ft on October 25, falling 0.16 ft over the past week. That is well above normal for October: the typical October level is 5,183.47 ft, so the lake is 0.39 ft above its usual mark.
Last 30 days
Shaded band shows the lowest and highest October monthly averages on record. Dashed line is the typical October level.
Typical level through the year
Each bar spans the range of monthly averages on record for that month. The line marks the median. The orange dot is where the lake sits now.
Recent daily readings
| Date | Level (ft NGVD29) | Change |
|---|---|---|
| Oct 24, 2026 | 5,183.90 | -0.04 |
| Oct 23, 2026 | 5,183.94 | -0.01 |
| Oct 22, 2026 | 5,183.95 | -0.04 |
| Oct 21, 2026 | 5,183.99 | -0.02 |
| Oct 20, 2026 | 5,184.01 | -0.01 |
| Oct 19, 2026 | 5,184.02 | -0.02 |
| Oct 18, 2026 | 5,184.04 | -0.01 |
| Oct 17, 2026 | 5,184.05 | -0.02 |
| Oct 16, 2026 | 5,184.07 | -0.02 |
| Oct 15, 2026 | 5,184.09 | -0.03 |
| Oct 14, 2026 | 5,184.12 | -0.03 |
| Oct 13, 2026 | 5,184.15 | 0.00 |
| Oct 12, 2026 | 5,184.15 | 0.00 |
| Oct 11, 2026 | 5,184.15 | -0.02 |
Reading these numbers
Readings are elevations in feet above the National Geodetic Vertical Datum of 1929 (NGVD29), the reference most older dam and lake charts use. If you compare with a newer chart in NAVD88, expect a difference of a few feet. Our glossary explains NGVD29 vs NAVD88.
Natural lake levels usually move slowly, following rain, snowmelt and evaporation. A rise after a wet week can flood low docks and beaches, while late-summer lows expose rocks and weed beds near shore.
The gauge is about 2 miles from the center of the lake and is listed by USGS as Diamond Lake near Diamond Lake, OR. Wind can pile water up at one end of a big lake for a few hours, so short spikes on a windy day are normal.
Diamond Lake water level questions
What is the water level at Diamond Lake today?
Diamond Lake was at 5,183.86 ft on October 25, falling 0.16 ft over the past week. That is well above normal for October: the typical October level is 5,183.47 ft, so the lake is 0.39 ft above its usual mark.
Is Diamond Lake high or low right now?
Compared with the long-term record for October, the lake is well above normal. The October monthly average has ranged from 5,182.73 to 5,183.98 ft, with a typical value of 5,183.47 ft.
Is Diamond Lake rising or falling?
Over the last seven days the level has fallen (-0.16 ft), and it is -0.34 ft compared with 30 days ago.
Where does the Diamond Lake water level data come from?
From the U.S. Geological Survey, gauge 14312450 (Diamond Lake near Diamond Lake, OR). USGS publishes provisional readings every 15 to 60 minutes; they can be revised later after quality checks.
How often is this page updated?
The page itself is rebuilt every day with the latest daily values, and the current reading refreshes straight from the USGS each time you open it.
Nearby lakes
If Diamond is blown out, these are the closest alternatives. Tap through for their water levels.