Grassy Lake water level today
Reservoir in Wyoming
7,179.90ft
2,188.43 m · NAVD88
Measured · provisional
24 hours
▲ 0.06 ft
7 days
▲ 0.24 ft
30 days
–
What this means
The lake has risen 0.24 ft in 7 days.
Since 2026, the lowest daily level was 7,179.30 ft (Oct 2026) and the highest 7,179.90 ft (Oct 2026).
Grassy Lake level chart
Loading chart…
Measured
Normal range for the date (middle 50% of past years)
Records & details
- Highest
- 7,179.90 ft on Oct 21, 2026
- Lowest
- 7,179.30 ft on Oct 7, 2026
- Records from
- 2026 (0 years of daily data)
- Storage
- 6,990 acre-ft
- Water temperature
- Not measured here
Grassy Lake Dam
- Height
- 118 ft
- Completed
- 1939
- Purposes
- Irrigation
- Owner
- BUREAU OF RECLAMATION
- Normal storage
- 15,470 acre-ft
- Surface area
- 318 acres
National Inventory of Dams (U.S. Army Corps of Engineers). All dam facts →
Campgrounds near Grassy Lake
- Headwaters Campground at Flagg Ranch
- Cave Falls Campground
Federal campgrounds from Recreation.gov; straight-line distance from the lake's gauge or dam.
Weather & wind
Overnight34°F · Patchy Fog
Wind S 3 mph
Wind S 3 mph
Friday43°F · Slight Chance T-storms
Wind SW 5 to 12 mph
Wind SW 5 to 12 mph
Friday Night22°F · Rain And Snow Showers then Areas Of Fog
Wind SW 5 to 12 mph
Wind SW 5 to 12 mph
Saturday46°F · Mostly Sunny
Wind ENE 0 to 3 mph
Wind ENE 0 to 3 mph
Saturday Night21°F · Mostly Clear
Wind ENE 0 to 5 mph
Wind ENE 0 to 5 mph
Sunday50°F · Mostly Sunny
Wind NE 0 to 5 mph
Wind NE 0 to 5 mph
NOAA National Weather Service forecast for this lake's location, updated 12 h ago.