Lilly Lake is a lake in Cass County, Michigan. Its water-quality measurements are published by EGLE and shown on this page as reported.

How deep is Lilly Lake?

Lilly Lake has a maximum depth of 29 feet and an average depth of 13 feet. The lake covers 65.9 acres.

Are there boat ramps on Lilly Lake?

Lilly Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Rogers Resort.

Can I fish at Lilly Lake?

Lilly Lake 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 Michigan's fish and wildlife agency, so check its current regulations before you go.

Lilly Lake

Cass County, Michigan66 acresView map Directions

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

Max depth

29 ft

Bathymetric survey

Area

66 acres

Surface area

Shoreline

0.7 mi

Measured length

29 ft max depth

See the measurements Directions Where to stay

Lilly Lake in Cass County, Michigan has water-quality measurements published by EGLE, shown here as reported. Maximum depth: 29 ft. Surface area: 65.9 acres.

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Water clarity at Lilly Lake

Clear water. Across summers from 2018 to 2023, Lilly Lake averaged 3.46 m (11 ft) of visibility down into the water, so you can typically see several feet down in midsummer. This lake sits close to the line between clarity classes, so treat the label as approximate and the depth reading as the real number.

Nobody has taken a water sample here that we can find. Michigan's environmental agency measures clarity on lakes like this one from satellite images instead, which is why this page reports how clear the water is and no phosphorus or algae readings.

Clear is not the same as clean. A lake can be easy to see through and still carry high nutrient levels, and a naturally tea-stained lake can be perfectly healthy. The nutrient and algae readings on other lakes come from phosphorus and chlorophyll-a measured in a laboratory, and clarity alone cannot stand in for them.

The same satellite images put summer algae here at roughly 3.92 micrograms per litre. Estimating algae from orbit is far less exact than measuring clarity, so that figure is worth knowing and is not part of any rating.

Lilly Lake is a 66-acre lake in Cass County, Michigan with a maximum depth of 29 feet (13-foot average). Public access is available with 1 public boat landing.

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

What Lilly Lake is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp

Swimming conditions

No reading

Not rated

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

Whether Lilly Lake is safe to swim in today is a call for the Michigan Department of Environment, Great Lakes, and Energy (EGLE) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Lilly Lake

These are the measurements EGLE publishes for Lilly 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 Lilly Lake

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

Lake Details

Max depth

29 ft

Average depth

13 ft

Surface area

66 acres

Shoreline

0.7 mi

Recreation & Access

Boat Landings

Rogers ResortSemi-private

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

Stays via Stay22

Stays near Lilly Lake

Compare lakeside cabins, hotels, and vacation rentals near Lilly Lake in Cass County, Michigan — 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 Lilly Lake

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

Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.

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Follow Lilly Lake’s readings

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Fishing Lilly Lake

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

Nearby Lakes in Cass County

Hutchens Lake0.4 miView →Lime Lakes1 miView →Forked Lake1.1 miView →Buck Lake1.4 miView →Kirk Lake1.9 miView →Birch Lake14 ft clear—View →

Frequently asked questions about Lilly Lake

Where is Lilly Lake?: Lilly Lake is a lake in Cass County, Michigan. Its water-quality measurements are published by EGLE and shown on this page as reported.
What is the water quality of Lilly Lake?: Lilly Lake in Cass County, Michigan has water-quality measurements published by EGLE, shown here as reported. Maximum depth: 29 ft. Surface area: 65.9 acres.
Is Lilly Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Lilly Lake?: Lilly Lake has a maximum depth of 29 feet and an average depth of 13 feet. The lake covers 65.9 acres.
Are there boat ramps on Lilly Lake?: Lilly Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Rogers Resort.
Can I fish at Lilly Lake?: Lilly Lake 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 Michigan's fish and wildlife agency, so check its current regulations before you go.