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

How deep is Rush Lake?

Rush Lake has a maximum depth of 30 feet and an average depth of 10 feet. The lake covers 424.6 acres.

Are there boat ramps on Rush Lake?

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

Can I fish at Rush Lake?

Rush 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.

Rush Lake

Montmorency County, Michigan425 acresView map Directions

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

Max depth

30 ft

Bathymetric survey

Area

425 acres

Surface area

Shoreline

1.8 mi

Measured length

30 ft max depth
Public access

See the measurements Directions Where to stay

Rush Lake in Montmorency County, Michigan has water-quality measurements published by EGLE, shown here as reported. Maximum depth: 30 ft. Surface area: 424.6 acres.

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Water clarity at Rush Lake

Moderate clarity. Across summers from 2018 to 2023, Rush Lake averaged 1.99 m (7 ft) of visibility down into the water, so visibility is middling in midsummer, which is ordinary for a productive inland lake.

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 9.53 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.

Rush Lake is a 425-acre lake in Montmorency County, Michigan with a maximum depth of 30 feet (10-foot average). Limited fish-species data available. Public access is available with 1 public boat landing.

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

What Rush Lake is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp
Deep water30 ft surveyed max depth

Swimming conditions

No reading

Not rated

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

Whether Rush 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 Rush Lake

These are the measurements EGLE publishes for Rush 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 Rush Lake

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

Lake Details

Max depth

30 ft

Average depth

10 ft

Surface area

425 acres

Shoreline

1.8 mi

Public access

Yes

Listed by EGLE

Recreation & Access

Boat Landings

Yes

Public Access

Rush LakePublic

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

Stays via Stay22

Stays near Rush Lake

Compare lakeside cabins, hotels, and vacation rentals near Rush Lake in Montmorency 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 Rush Lake

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Follow Rush Lake’s readings

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Fishing Rush Lake

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

Nearby Lakes in Montmorency County

Rush Lake0.4 miView →Little Brush Lake2.3 miView →Upper Tomahawk Lake3.8 miView →Cranberry Lake3 miView →Cranberry Lake3.1 miView →Grass Lake3.1 miView →

Frequently asked questions about Rush Lake

Where is Rush Lake?: Rush Lake is a lake in Montmorency County, Michigan. Its water-quality measurements are published by EGLE and shown on this page as reported.
What is the water quality of Rush Lake?: Rush Lake in Montmorency County, Michigan has water-quality measurements published by EGLE, shown here as reported. Maximum depth: 30 ft. Surface area: 424.6 acres.
Is Rush Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Rush Lake?: Rush Lake has a maximum depth of 30 feet and an average depth of 10 feet. The lake covers 424.6 acres.
Are there boat ramps on Rush Lake?: Rush Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Rush Lake. Public access is listed as yes.
Can I fish at Rush Lake?: Rush 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.