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

Are there boat ramps on Lake Henry?

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

Can I fish at Lake Henry?

Lake Henry 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 Henry

Bon Homme County, South Dakota43 acresView map Directions

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

Area

43 acres

Surface area

Shoreline

2.9 mi

Measured length

Impaired · Mercury
Public access
Limited data

See the measurements Directions Where to stay

Lake Henry in Bon Homme County, South Dakota has water-quality measurements published by SD DANR, shown here as reported. Surface area: 43 acres.

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Lake Henry is a 43-acre lake in Bon Homme County, South Dakota. 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 Henry 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 Henry is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, oxygen depletion (low DO). Check local advisories before you swim.

Whether Lake Henry 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 Henry

These are the measurements SD DANR publishes for Lake Henry, 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 Henry

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

Lake Details

Surface area

43 acres

Shoreline

2.9 mi

Public access

Yes

Listed by SD DANR

No bathymetric survey has been published for Lake Henry, so its depth is not documented here.

Recreation & Access

Boat Landings

Yes

Public Access

Henry Public Water AccessPublic

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

Stays via Stay22

Stays near Lake Henry

Compare lakeside cabins, hotels, and vacation rentals near Lake Henry in Bon Homme 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.

Top-rated places to stay near Lake Henry

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Fishing Lake Henry

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

EPA Impairment Status

Lake Henry is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

MercuryOxygen 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-JA-L-HENRY_01 · Official waterbody report

Nearby Lakes in Bon Homme County

Kloucek Lake7.7 miView →Kubal Lake10.9 miView →Pechous Lake13.6 miView →Hruska Lake14 miView →Lewis and Clark Lake—View →Meiers Lake19.7 miView →

Frequently asked questions about Lake Henry

Where is Lake Henry?: Lake Henry is a lake in Bon Homme 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 Henry?: Lake Henry in Bon Homme County, South Dakota has water-quality measurements published by SD DANR, shown here as reported. Surface area: 43 acres.
Is Lake Henry safe to swim in?: Nutrient and algae readings are not a swimming clearance. Lake Henry is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, oxygen depletion (low DO). Check local advisories before you swim.
Are there boat ramps on Lake Henry?: Lake Henry has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Henry Public Water Access. Public access is listed as yes.
Can I fish at Lake Henry?: Lake Henry 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.