Reservoir · United States
Walden Pond
Lake in Concord, Massachusetts, United States
- Area
- 0.2km²
- Max depth
- 31m
- Average depth
- 4.2m
- Elevation
- 51m a.s.l.
- Shoreline
- 2.1km
- Volume
- 0.001km³
Walden Pond is a reservoir in United States. It covers 0.2 km². On average it is 4.2 m deep, and 31 m at its deepest point. Its surface lies 51 m above sea level.
Plan your visit
Stay, sail and get there
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The water
How warm is Walden Pond?
The water is warmest in July, around 26 °C at the surface, and coldest in January, around 0 °C. The surface averages 20 °C or more from June to September: comfortable for most swimmers.
The lake usually freezes over for about 62 days a year, from around 1 January to 3 March.
On the shore, afternoons reach 28 °C on average in July and 0 °C in January. The driest month is January (80 mm of rain), the wettest October (123 mm).
Average surface temperature measured by the Landsat 8 satellite between 2013 and 2021 at the point furthest from the shore (88 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 | — | 0 | -8 | 80 | 10 | 4.2 | 12 |
| February | Ice | — | 2 | -7 | 86 | 9 | 5.0 | 12 |
| March | 2 | 6 | 6 | -3 | 110 | 11 | 5.7 | 12 |
| April | 9 | 13 | 13 | 2 | 106 | 11 | 6.5 | 10 |
| May | 17 | 21 | 19 | 8 | 95 | 12 | 6.7 | 8 |
| June | 24 | 26 | 24 | 14 | 113 | 13 | 7.4 | 7 |
| July | 26 | 27 | 28 | 17 | 94 | 12 | 8.3 | 7 |
| August | 26 | 26 | 27 | 17 | 93 | 12 | 7.8 | 7 |
| September | 22 | 24 | 24 | 13 | 92 | 10 | 6.8 | 7 |
| October | 17 | 20 | 16 | 7 | 123 | 10 | 4.7 | 9 |
| November | 10 | 13 | 10 | 1 | 98 | 10 | 4.2 | 10 |
| December | 3 | 6 | 4 | -4 | 116 | 11 | 3.4 | 11 |
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 14 months before flowing out.
- Its catchment drains 1 km² of land.
- About 0.0 m³ of water flow out every second, on average.
Around the shore
What's around Walden Pond
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- 5beaches and swimming spots
Main Beach, Red Cross Beach
- —campsites
- —boat hire and water-sport clubs
- 1marinas and slipways
- —ferry piers
- 4viewpoints
- —hotels, B&Bs and chalets
- —fishing spots
- —restaurants and cafés
Towns on the shore
- Concord16,810 people
- Lincoln8,197 people
Nearest airport with scheduled flights: Laurence G Hanscom Field (BED), 6 km in a straight line.
Car hire at BOS airport (Boston)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 | 0.5 | 1.7 | 5.8 | 12.7 | 18.7 | 23.6 | 27.6 | 27.4 | 23.7 | 16.3 | 9.6 | 3.7 |
| 2020 | +2.9 | +1.5 | +2.5 | −2.6 | −0.6 | +1.6 | +2.0 | +1.7 | +0.6 | +0.4 | +2.8 | +0.5 |
| 2021 | +0.7 | −0.6 | +2.5 | +0.4 | +0.3 | +2.5 | −2.9 | −0.6 | −0.7 | +1.5 | ±0.0 | +1.7 |
| 2022 | −0.6 | +1.7 | +2.1 | ±0.0 | +1.3 | +0.7 | +2.9 | +3.0 | −0.8 | +0.5 | +2.3 | +0.9 |
| 2023 | +3.4 | +2.0 | +0.6 | +1.6 | +0.7 | −1.3 | −0.5 | −2.7 | −1.0 | +1.5 | −1.3 | +2.5 |
| 2024 | +1.0 | +1.9 | +1.5 | −0.2 | +0.8 | +1.6 | +0.4 | −0.9 | +0.1 | +1.8 | +2.5 | −0.1 |
| 2025 | −0.6 | −1.2 | +2.9 | +1.0 | +0.1 | +1.0 | +1.5 | +0.6 | +0.7 | +0.8 | −0.6 | −2.1 |
+1 warmer than usual −1 cooler than usual
Nearby
More lakes nearby
United States4.6 km² · 61 km away25°maxLake WinnipesaukeeUnited States182 km² · 129 km away23°maxLake GeorgeUnited States113 km² · 226 km away24°maxLake Champlain
Canada1,141 km² · 277 km away23°maxJacqueline Kennedy Onassis ReservoirUnited States0.3 km² · 285 km away28°maxLake MemphremagogCanada90.7 km² · 298 km away22°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 (Q2023853) · 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.
