Reservoir · United States
Franklin D. Roosevelt Lake
Body of water
- Area
- 269km²
- Max depth
- 121m
- Average depth
- 24m
- Elevation
- 384m a.s.l.
- Shoreline
- 495km
- Volume
- 6.4km³
Franklin D. Roosevelt Lake is a reservoir in United States. It covers 269 km². On average it is 24 m deep, and 121 m at its deepest point. Its surface lies 384 m above sea level.
Plan your visit
Stay, sail and get there
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The water
How warm is Franklin D. Roosevelt Lake?
The water is warmest in August, around 21 °C at the surface, and coldest in January, around 0 °C. The surface averages 20 °C or more from July to August: comfortable for most swimmers.
The lake usually freezes over for about 46 days a year, from around 27 December to 10 February.
On the shore, afternoons reach 28 °C on average in July and -3 °C in January. The driest month is August (15 mm of rain), the wettest December (73 mm).
Average surface temperature measured by the Landsat 8 satellite between 2013 and 2021 at the point furthest from the shore (98 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 | Ice | — | -3 | -10 | 65 | 15 | 2.5 | 6 |
| February | 1 | 2 | -1 | -10 | 43 | 11 | 4.8 | 6 |
| March | 4 | 6 | 4 | -5 | 61 | 13 | 5.8 | 6 |
| April | 8 | 11 | 11 | -1 | 43 | 11 | 7.6 | 6 |
| May | 13 | 15 | 18 | 4 | 52 | 12 | 9.1 | 6 |
| June | 17 | 19 | 22 | 8 | 50 | 11 | 9.7 | 6 |
| July | 20 | 21 | 28 | 12 | 16 | 6 | 12.5 | 6 |
| August | 21 | 21 | 28 | 12 | 15 | 4 | 10.8 | 6 |
| September | 18 | 20 | 21 | 6 | 23 | 5 | 8.5 | 6 |
| October | 13 | 16 | 11 | 0 | 48 | 9 | 5.7 | 6 |
| November | 6 | 10 | 2 | -5 | 68 | 15 | 2.8 | 6 |
| December | 1 | 4 | -3 | -10 | 73 | 14 | 1.8 | 6 |
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 23 days before flowing out.
- Its catchment drains 194,674 km² of land.
- About 3,167 m³ of water flow out every second, on average.
- Its shoreline is 8.5 times longer than a circle of the same area: plenty of bays and inlets.
Around the shore
What's around Franklin D. Roosevelt Lake
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- 10beaches and swimming spots
- 40campsites
Panorama RV Park, Grandview Inn RV Park, Porcupine Bay Campground, Seven Bays Campground & RV Park, Bradbury Campground and 35 more
- —boat hire and water-sport clubs
- 33marinas and slipways
Seven Bays Marina, French Rock Boat Launch, Fort Spokane Boat Launch, Gifford Boat Launch, Evans Boat Launch and 28 more
- 4ferry piers
Inchelium Ferry Landing, Keller Ferry, Gifford Ferry Landing
- 1viewpoints
Larson
- 1hotels, B&Bs and chalets
Grandview Inn Motel & RV Park
- —fishing spots
- 4restaurants and cafés
Towns on the shore
- Kettle Falls1,597 people
- Coulee Dam1,093 people
- Grand Coulee1,043 people
Nearest airport with scheduled flights: Spokane International Airport (GEG), 91 km in a straight line.
Car hire at GEG airport (Spokane)Discover Cars · Affiliate linkOpenStreetMap is built by volunteers: when a number is low, it may just mean nobody has mapped it yet.
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 | -3.1 | -1.1 | 4.1 | 10.6 | 17.5 | 21.6 | 28.5 | 27.8 | 21.2 | 11.3 | 2.2 | -3.1 |
| 2020 | +1.7 | +2.8 | −0.1 | +0.5 | −1.4 | −1.7 | −1.5 | +0.5 | +2.3 | −0.5 | +0.1 | +2.2 |
| 2021 | +0.8 | −2.1 | +2.4 | +2.4 | +1.1 | +6.2 | +4.4 | −1.5 | −0.4 | −0.3 | +0.8 | −0.5 |
| 2022 | −0.4 | −1.1 | +1.4 | −3.2 | −4.2 | −1.5 | +1.0 | +2.9 | +2.7 | +6.0 | −3.5 | −3.7 |
| 2023 | +0.4 | −1.4 | −3.7 | −1.0 | +4.0 | +2.5 | +1.5 | +0.5 | −0.3 | +1.8 | −0.5 | +2.4 |
| 2024 | −1.4 | +2.2 | +1.8 | +0.7 | −1.4 | −0.8 | +3.2 | +0.1 | +3.1 | +0.9 | −2.0 | +1.1 |
| 2025 | −1.8 | −3.9 | −0.6 | +1.9 | +0.2 | +2.2 | −0.3 | −0.5 | +4.0 | −1.0 | +1.3 | +2.9 |
+1 warmer than usual −1 cooler than usual
Nearby
More lakes nearby
United States126 km² · 133 km away22°maxLake Pend OreilleUnited States360 km² · 137 km away21°maxKootenay Lake
Canada422 km² · 156 km away19°maxLake ChelanUnited States128 km² · 174 km away18°maxOkanagan LakeCanada349 km² · 226 km away23°maxKalamalka LakeCanada25.6 km² · 223 km away23°maxAbout 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 (Q3042661) · 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.
