Diablo Reservoir water level · WA
Wind forecast, gusts, and gage height for small-craft sailing at Diablo Reservoir (Diablo Reservoir Near Newhalem).
Gage height recorded at USGS gauge 12176500, refreshed every 15 minutes to 1 hour depending on the sensor.
1,203.58ft
recorded Nov 4, 4:00 AM
+0.20ft
rising
+3.24ft
rising
1,200.34–1,204.11ft
lowest to highest
Recent daily readings
| Date | Level (ft) | Δ day |
|---|---|---|
| Nov 4● | 1,203.58 | ↓ 0.53 |
| Nov 3 | 1,204.11 | ↑ 0.98 |
| Nov 2 | 1,203.13 | ↑ 1.11 |
| Nov 1 | 1,202.02 | ↑ 1.15 |
| Oct 31 | 1,200.87 | ↑ 0.25 |
| Oct 30 | 1,200.62 | ↑ 0.22 |
| Oct 29 | 1,200.40 | ↑ 0.06 |
| Oct 28 | 1,200.34 | ↓ 0.79 |
| Oct 27 | 1,201.13 | ↓ 1.47 |
| Oct 26 | 1,202.60 | ↑ 0.45 |
| Oct 25 | 1,202.15 | ↑ 1.32 |
| Oct 24 | 1,200.83 | ↓ 0.68 |
| Oct 23 | 1,201.51 | ↓ 1.10 |
| Oct 22 | 1,202.61 | — |
Readings fetched Nov 4, 5:09 AM; the chart above loads the latest data live from USGS.
Diablo Reservoir water level questions
- What is the water level at Diablo Reservoir today?
- 1,203.58 ft, recorded Nov 4, 4:00 AM at USGS gauge 12176500. The chart above refreshes live from the same gauge.
- Is Diablo Reservoir rising or falling?
- rising — 3.24 ft over the last 7 days.
- How does this compare to normal for Diablo Reservoir?
- Over the last 14 days the gauge has ranged from 1,200.34 ft to 1,204.11 ft; today's reading sits near the top of that range.
- Where does the water level data for Diablo Reservoir come from?
- USGS gauge 12176500 (Diablo Reservoir Near Newhalem), which reports every 15 minutes to 1 hour. Readings are provisional until reviewed by the USGS.
- What is the water temperature at Diablo Reservoir?
- This gauge has no live water-temperature sensor — the fishing tab shows a seasonal estimate based on air temperature.
Gage height history
Gage height · USGS gauge 12176500
Reading the chart. This gauge reports gage height — the depth of water above the sensor reference point, not absolute elevation. Trends matter more than the absolute number: a falling trend means shrinking launch depth.
Water levels respond to dam operations, irrigation drawdown, snowmelt, and recent rainfall. For launch decisions, combine the trend here with the wind forecast — low water plus strong wind makes steep, tired ramps.
About this lake
- Location
- 48.7154°, -121.1323°
- Gauge datum
- 6 ft
- USGS gauge
- 12176500
- Water temp sensor
- No
Water level data comes from the USGS gauge above; wind is modeled for the lake’s coordinates by Open-Meteo. Always confirm conditions locally before launching — shorelines, ramps, and trees can all change what you feel on the water. West of the Rockies, wind follows the gaps: passes and river canyons channel strong flow onto the water, afternoons run windier than mornings, and mountain lakes in particular can build fast as the slopes heat up.
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