The lake bed in 3-D: deep basin, drop-offs and shoreline. Shape estimated, not for navigation. Spot 1 (back of a cove) is open for everyone; the other 5 come with LakeScope PRO. Full screen
Grass Lake
Codington County, South Dakota · about 1,610 acres (2.5 sq mi)
42°F water, calm this morning.
About Grass Lake
Grass Lake spreads over about 1,610 acres in Codington County, South Dakota.
It stretches about 2.5 miles end to end and its shoreline adds up to about 9.3 miles. Its surface is about 1,740 ft above sea level. The nearest town, Watertown, is about 17 miles southeast.
- Size
- About 1,610 acres (2.5 sq mi)
- Shoreline
- About 9.3 miles
- End to end
- About 2.5 miles
- Elevation
- About 1,740 ft
- County
- Codington County
The lake from above
Best fishing times
Friday Good
- 6:45 am – 9:00 amsunrise
- 3:30 pm – 5:00 pm bestsunset, moon overhead · wind 9 mph
Saturday Fair
- 6:45 am – 8:00 amsunrise · wind 10 mph
- 3:45 pm – 5:45 pm bestsunset, moon overhead · wind 14 mph
Based on sun and moon times and the wind forecast. A guide, not a promise. The app shows the whole week.
Fish to expect
For a lake of this size in South Dakota, walleye, northern pike, largemouth bass, yellow perch and bluegill and sunfish are the fish to expect. The state fish and wildlife agency lists what is stocked and the rules for this lake. At 42°F on the surface right now, here is how each one should behave.
- GoodWalleye
Good cool-water bite, best at dusk and after dark.
- GoodNorthern pike
Prime range. Weed edges and shallow bays.
- SlowLargemouth bass
Cold and sluggish. Fish slow and deep near steep banks.
- GoodYellow perch
Schooled near weed edges and soft bottom.
- SlowBluegill and sunfish
Cold. Deep and hard to tempt. Use tiny baits.
From today's water temperature and the season. A guide, not a promise.
Fishing spots
- 1Back of a cove
Sheltered, shallower water where baitfish gather.
- 2
- 3
- 4
- 5
- 6
5 more spots with LakeScope PRO: fish, depth band, water temperature, best time and bait for each.
Picked from the shape of the lake bed. A guide, not a promise.
Water temperature
At the surface, seen .
Water level
No daily level reading for this lake.
Ice
Open water
Ice thickness is an estimate from air temperature, not a measurement. Check the ice yourself before going on it.
Weather and wind
Sunrise 7:25 am · sunset 5:02 pm · waxing crescent moon (lake time).
Towns and places to stay near Grass Lake
- Watertownabout 17 mi southeast
- Websterabout 18 mi north
- Clarkabout 21 mi southwest
- Haytiabout 29 mi south
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Questions about Grass Lake
What fish are in Grass Lake?
Lakes like Grass Lake usually hold walleye, northern pike, largemouth bass, yellow perch and bluegill and sunfish. Check the state fish and wildlife agency for stocking and limits.
How deep is Grass Lake?
We have no published depth for this lake. The 3-D view gives an estimated shape of the bed: where the deep basin and the drop-offs are. Not for navigation.
How big is Grass Lake?
About 1,610 acres, with about 9.3 miles of shoreline.
What town is near Grass Lake?
Watertown is about 17 miles southeast; Webster is about 18 miles north.
What is the water temperature at Grass Lake today?
The surface was about 42°F on the latest clear reading. The page updates every day.
Grass Lake on your phone
The whole week of bite times, lake alerts and the 3-D view, every morning.
