Reservoir · United States
Lake Powell
Reservoir Utah and Arizona in the United States
- Area
- 121km²
- Max depth
- 150m
- Average depth
- 208m
- Elevation
- 1,124m a.s.l.
- Shoreline
- 306km
- Volume
- 25.1km³
Lake Powell is a reservoir in United States. It covers 121 km². On average it is 208 m deep, and 150 m at its deepest point. Its surface lies 1,124 m above sea level.
Plan your visit
Stay, sail and get there
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The water
How warm is Lake Powell?
The water is warmest in August, around 27 °C at the surface, and coldest in February, around 9 °C. The surface averages 20 °C or more from June to October: comfortable for most swimmers.
It does not normally freeze in winter.
On the shore, afternoons reach 36 °C on average in July and 6 °C in December. The driest month is June (5 mm of rain), the wettest August (28 mm).
Average surface temperature measured by the Landsat 8 satellite between 2013 and 2021 at the point furthest from the shore (120 readings). Shallow bays and beaches are often warmer.
From above
The whole lake from space
Month by month
The year at the lake, month by month
Not a forecast: these are averages over many years. Water is the 2013–2021 average; air, rain, sun and wind are the 1991–2020 average.
Water: 2013–2021 averageClimate: 1991–2020 average
| Month | Water°C | Water high°C | Air high°C | Air low°C | Rainmm | Rainy daysdays | Sunh/day | Windkm/h |
|---|---|---|---|---|---|---|---|---|
| January | 9 | 10 | 6 | -4 | 20 | 5 | 6.8 | 10 |
| February | 9 | 10 | 9 | -3 | 19 | 4 | 7.5 | 11 |
| March | 11 | 13 | 15 | 0 | 15 | 4 | 9.5 | 12 |
| April | 15 | 17 | 20 | 4 | 10 | 3 | 11.0 | 15 |
| May | 19 | 22 | 26 | 10 | 11 | 3 | 12.0 | 14 |
| June | 24 | 26 | 34 | 16 | 5 | 1 | 13.7 | 14 |
| July | 27 | 28 | 36 | 20 | 24 | 6 | 11.3 | 11 |
| August | 27 | 28 | 33 | 19 | 28 | 7 | 10.5 | 10 |
| September | 25 | 26 | 29 | 14 | 22 | 5 | 10.3 | 11 |
| October | 21 | 23 | 21 | 6 | 22 | 4 | 9.0 | 11 |
| November | 16 | 18 | 13 | 0 | 14 | 2 | 7.8 | 10 |
| December | 12 | 14 | 6 | -4 | 18 | 4 | 6.4 | 10 |
Water: LakeTEMP (Landsat 8, 2013–2021). Air, rain, sun and wind: NASA POWER, 1991–2020 averages. A rainy day has at least 1 mm of rain. Sunshine hours are derived from measured solar radiation.
Size & depth
How big, how deep
- On average, water stays in the lake for about 17 months before flowing out.
- Its catchment drains 278,955 km² of land.
- About 562 m³ of water flow out every second, on average.
- Its shoreline is 7.9 times longer than a circle of the same area: plenty of bays and inlets.
Around the shore
What's around Lake Powell
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- 3beaches and swimming spots
Lone Rock Beach
- 10campsites
Lone Rock Campground, Lone rock camping site, Wahweap RV & Campground, Wahweap Campground and 6 more
- 1boat hire and water-sport clubs
Paddle Lake Powell
- 13marinas and slipways
Wahweap Marina Main boat launch, Antelope Point Marina, Wahweap Boat Rental, Wahweap Marina and 9 more
- —ferry piers
- 8viewpoints
Alstrom Point, Wahweap Overlook, Antelope Point, Glen Canyon Dam Visitor Center, Navajo Viewpoint and 3 more
- 2hotels, B&Bs and chalets
Grandview Inn B&B, Lake Powell Resort
- —fishing spots
- 5restaurants and cafés
Nearest airport with scheduled flights: Page Municipal Airport (PGA), 20 km in a straight line.
Car hire at SGU airport (St George)Discover Cars · Affiliate linkOpenStreetMap is built by volunteers: when a number is low, it may just mean nobody has mapped it yet.
Photos
Seen by visitors
Recent years
How each month compared
Afternoon high on the shore. The first row is the reference, the 1991–2020 average in °C; the years below show the difference from it: warmer in orange, cooler in blue.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1991–2020 average | 6.0 | 9.2 | 15.3 | 20.0 | 26.2 | 33.6 | 35.5 | 33.3 | 28.9 | 20.8 | 12.8 | 5.9 |
| 2020 | +0.6 | +0.1 | −1.0 | +1.0 | +2.9 | −0.5 | +0.6 | +4.2 | +1.8 | +3.6 | +1.1 | −0.6 |
| 2021 | +0.1 | +0.8 | −1.8 | +1.9 | +1.8 | +2.2 | −0.7 | +0.6 | +0.9 | −1.4 | +2.4 | +2.5 |
| 2022 | +0.6 | −0.6 | −0.5 | +1.5 | +1.5 | +0.5 | −1.1 | −1.4 | +1.9 | ±0.0 | −4.0 | +0.5 |
| 2023 | −1.1 | −2.6 | −5.1 | −0.5 | −0.3 | −3.4 | +3.0 | +0.2 | −0.7 | +1.3 | +0.8 | +1.8 |
| 2024 | +1.0 | +1.6 | −0.9 | +1.0 | +0.3 | +2.6 | +2.6 | +0.4 | +2.3 | +4.0 | −1.8 | +3.2 |
| 2025 | −0.7 | +4.5 | +0.9 | +1.1 | +1.2 | +0.5 | +0.7 | +1.7 | +0.3 | +0.8 | +2.9 | +5.4 |
+1 warmer than usual −1 cooler than usual
About these numbers
| Outline, area, depth, volume | HydroLAKES v1.0 (Messager et al. 2016) · CC BY 4.0 |
|---|---|
| Water temperature and ice | LakeTEMP v1 (Korver et al. 2024), Landsat 8 2013–2021 · CC BY 4.0 |
| Air, rain, sun, wind | NASA POWER, 1991–2020 · public domain |
| Names and description | Wikidata (Q667507) · CC0 |
| Around the shore | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
Every figure is an average or a count from a public dataset. Licences and methods: data sources.
