Where is Lake Geddes?

Lake Geddes is a lake in Charles Mix County, South Dakota. Its water-quality measurements are published by SD DANR and shown on this page as reported.

How deep is Lake Geddes?

Lake Geddes has a maximum depth of 12 feet and an average depth of 3.2 feet. The lake covers 79 acres.

Are there boat ramps on Lake Geddes?

Lake Geddes has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Geddes Public Water Access. Public access is listed as yes.

Can I fish at Lake Geddes?

Lake Geddes has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by South Dakota's fish and wildlife agency, so check its current regulations before you go.

Lake Geddes

Charles Mix County, South Dakota79 acresView map Directions

No nutrient or algae sampling on record from SD DANR for this lake.

Max depth

12 ft

Bathymetric survey

Area

79 acres

Surface area

Shoreline

2.1 mi

Measured length

Impaired · Algal growth
12 ft max depth
Public access
Limited data

See the measurements Directions Where to stay

Lake Geddes in Charles Mix County, South Dakota has water-quality measurements published by SD DANR, shown here as reported. Maximum depth: 12 ft. Surface area: 79 acres.

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Lake Geddes is a 79-acre lake in Charles Mix County, South Dakota with a maximum depth of 12 feet (3-foot average). Limited fish-species data available. Public access is available with 1 public boat landing.

Source: EPA Water Quality Portal sampling records, SD DANR. Methodology: how these readings are compared.

What Lake Geddes is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp

Swimming conditions

No reading

Recreation use not supported

Nutrient and algae readings are not a swimming clearance. Lake Geddes is listed impaired under Clean Water Act §303(d) (IR 4A) for algal growth, oxygen depletion (low DO). Check local advisories before you swim.

Whether Lake Geddes is safe to swim in today is a call for the South Dakota Department of Agriculture and Natural Resources and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Lake Geddes

These are the measurements SD DANR publishes for Lake Geddes, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.

No clarity data.

Ask about Lake Geddes

Answers come straight from the public measurements and survey records on this page.

Lake Details

Max depth

12 ft

Average depth

3.2 ft

Surface area

79 acres

Shoreline

2.1 mi

Public access

Yes

Listed by SD DANR

Recreation & Access

Boat Landings

Yes

Public Access

Geddes Public Water AccessPublic

Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps

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Stays near Lake Geddes

Compare lakeside cabins, hotels, and vacation rentals near Lake Geddes in Charles Mix County, South Dakota — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.

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Fishing Lake Geddes

→ Lake Geddes fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Lake Geddes is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).

Causes of impairment

Algal growthOxygen depletion (low DO)

Designated uses not supporting: Aquatic life, Recreation.

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit SD-MI-L-GEDDES_01 · Official waterbody report

Nearby Lakes in Charles Mix County

Goose Lake7.6 miView →Lake Andes11.9 miView →Lake Platte—View →Red Lake—View →Burks Lake—View →Academy Lake—View →

Frequently asked questions about Lake Geddes

Where is Lake Geddes?: Lake Geddes is a lake in Charles Mix County, South Dakota. Its water-quality measurements are published by SD DANR and shown on this page as reported.
What is the water quality of Lake Geddes?: Lake Geddes in Charles Mix County, South Dakota has water-quality measurements published by SD DANR, shown here as reported. Maximum depth: 12 ft. Surface area: 79 acres.
Is Lake Geddes safe to swim in?: Nutrient and algae readings are not a swimming clearance. Lake Geddes is listed impaired under Clean Water Act §303(d) (IR 4A) for algal growth, oxygen depletion (low DO). Check local advisories before you swim.
How deep is Lake Geddes?: Lake Geddes has a maximum depth of 12 feet and an average depth of 3.2 feet. The lake covers 79 acres.
Are there boat ramps on Lake Geddes?: Lake Geddes has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Geddes Public Water Access. Public access is listed as yes.
Can I fish at Lake Geddes?: Lake Geddes has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by South Dakota's fish and wildlife agency, so check its current regulations before you go.