Heart Lake is a lake in Lewis and Clark County, Montana. Its water-quality measurements are published by Montana DEQ and shown on this page as reported.

Heart Lake

Lewis and Clark County, Montana28 acresView map Directions

No nutrient or algae sampling on record from Montana DEQ for this lake.

Area

28 acres

Surface area

Shoreline

1.4 mi

Measured length

See the measurements Directions Where to stay

Heart Lake in Lewis and Clark County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Surface area: 28 acres.

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Heart Lake is a 28-acre lake in Lewis and Clark County, Montana.

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

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether Heart Lake is safe to swim in today is a call for the Montana Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Heart Lake

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

No clarity data. TSI undefined.

Ask about Heart Lake

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

Lake Details

Surface area

28 acres

Shoreline

1.4 mi

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

Stays via Stay22

Stays near Heart Lake

Compare lakeside cabins, hotels, and vacation rentals near Heart Lake in Lewis and Clark County, Montana — 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 Heart Lake

Prices for Oct 16–18, 4 adults. Change dates on the map below.

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Follow Heart Lake’s readings

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Fishing Heart Lake

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

Nearby Lakes in Lewis and Clark County

Bean Lake15.5 miView →Connors Lake18.1 miView →Smith Lake20.1 miView →Anderson Lake—View →Nilan Reservoir—View →Krone Lake—View →

Frequently asked questions about Heart Lake

Where is Heart Lake?: Heart Lake is a lake in Lewis and Clark County, Montana. Its water-quality measurements are published by Montana DEQ and shown on this page as reported.
What is the water quality of Heart Lake?: Heart Lake in Lewis and Clark County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Surface area: 28 acres.
Is Heart Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.