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Photo: Sylvan Lake - Custer State Park - South Dakota - 10 Dec. 2017 by Sharon Mollerus (CC BY 2.0) License

Sylvan Lake

Lake · East Custer, South Dakota

Cool todaycamping-nearby

Tranquil lake area for swimming, canoeing, hiking, picnicking & rock climbing on large outcroppings.

Weather at Sylvan Lake

47°F, Clear · H 72° / L 46° · 1% chance of rain
H: 72° L: 46°
Clear
Clear
47°
|
Feels like 43°
Precipitation
1%
Humidity
56%
Wind
8 mph
UV Index
0
12 AM
Clear
46°
3 AM
Clear
50°
6 AM
Clear
50°
9 AM
Sunny
60°
12 PM
Sunny
71°
3 PM
Sunny
71°
6 PM
Sunny
55°
9 PM
Clear
51°

Frequently asked questions

Where is Sylvan Lake?
Sylvan Lake is a lake in East Custer, South Dakota.
Can you swim at Sylvan Lake?
There is no fixed answer for Sylvan Lake: whether it is safe to swim there on a given day depends on the water temperature, recent rainfall, and any advisories posted at Sylvan Lake in East Custer, South Dakota. Check current water conditions before you go, and follow posted signs and local guidance.
How is Sylvan Lake rated?
Sylvan Lake in East Custer, South Dakota has an average visitor rating of 4.8 out of 5, based on 692 reviews.
What amenities does Sylvan Lake have?
Visitor-listed amenities at Sylvan Lake include camping-nearby.

Location & Contact

East Custer, SD 57730

East Custer, South Dakota 57730

🏞️ Best times & visiting tips
  • ›Check for boat launch facilities and fees
  • ›Obtain required fishing licenses before arrival
  • ›Be aware of lake-specific regulations and restrictions
  • ›Monitor water quality reports before swimming

Features & amenities

Amenities

⛺ Camping nearby
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