Where is Lake Red Rock?

Lake Red Rock is a lake in Marion County, Iowa. Its water-quality measurements are published by Iowa DNR and shown on this page as reported.

How deep is Lake Red Rock?

Lake Red Rock has a maximum depth of 20 feet. The lake covers 8619 acres.

Are there boat ramps on Lake Red Rock?

Lake Red Rock has 3 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Cordova, Elk Rock A Access, Elk Rock B Access. Public access is listed as yes.

Can I fish at Lake Red Rock?

Lake Red Rock has 3 documented boat landings in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Iowa's fish and wildlife agency, so check its current regulations before you go.

Are there campgrounds on Lake Red Rock?

Lake Red Rock has 1 public campground from USGS The National Map within 5 km, including Elk Rock Campground and Boat Ramp. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.

Lake Red Rock

Marion County, Iowa8,619 acresView map Directions

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

Max depth

20 ft

Bathymetric survey

Area

8,619 acres

Surface area

Shoreline

97.3 mi

Measured length

Impaired · Pathogens (E. coli, fecal)
20 ft max depth
Public access

See the measurements Directions Where to stay

Lake Red Rock in Marion County, Iowa has water-quality measurements published by Iowa DNR, shown here as reported. Maximum depth: 20 ft. Surface area: 8619 acres.

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Lake Red Rock is a 8,619-acre lake in Marion County, Iowa with a maximum depth of 20 feet. Limited fish-species data available. Public access is available with 3 public boat landings.

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

What Lake Red Rock is good for

From access and monitoring records, not editorial picks.

Boat launch3 documented ramps
Camping1 public campground nearby
Big water8,619 acres

Swimming conditions

No reading

Bacteria advisory

Nutrient and algae readings are not a swimming clearance. Lake Red Rock is listed impaired under Clean Water Act §303(d) (IR 5) for pathogens (E. coli, fecal), turbidity. Check local advisories before you swim.

Whether Lake Red Rock is safe to swim in today is a call for the Iowa Department of 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 Red Rock

These are the measurements Iowa DNR publishes for Lake Red Rock, 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 Lake Red Rock

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

Lake Details

Max depth

20 ft

Surface area

8,619 acres

Shoreline

97.3 mi

Public access

Yes

Listed by Iowa DNR

The depth above comes from a bathymetric survey of this lake, not from a regional estimate.

Recreation & Access

Boat Landings

Yes

Public Access

Campgrounds

CordovaPublic
Elk Rock A AccessPublic
Elk Rock B AccessPublic

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

Public campgrounds near Lake Red Rock

Elk Rock Campground and Boat Ramp2.4 km

Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes

Stays via Stay22

Stays near Lake Red Rock

Compare lakeside cabins, hotels, and vacation rentals near Lake Red Rock in Marion County, Iowa — 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 Red Rock

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Follow Lake Red Rock’s readings

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Fishing Lake Red Rock

→ Lake Red Rock fishing regulations (limits, seasons, special rules)

EPA Impairment Status

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

Causes of impairment

Pathogens (E. coli, fecal)Turbidity

Designated uses not supporting: Recreation.

Source: EPA ATTAINS assessment unit IA 04-LDM-1017 · Official waterbody report

Nearby Lakes in Marion County

Roberts Creek Lake1.5 ft clear · Hypereutrophic1.3 miView →Williamson Pond Max Depth1.6 ft clear · Hypereutrophic23.2 miView →Lake Miami Max Depth1.3 ft clear · Hypereutrophic23.4 miView →Mariposa Lake5.1 ft clear · Eutrophic—View →Thomas Mitchell Lake3.3 ft clear · Eutrophic22.5 miView →Rock Creek Max Depth Lake1.1 ft clear · Hypereutrophic25.1 miView →

Frequently asked questions about Lake Red Rock

Where is Lake Red Rock?: Lake Red Rock is a lake in Marion County, Iowa. Its water-quality measurements are published by Iowa DNR and shown on this page as reported.
What is the water quality of Lake Red Rock?: Lake Red Rock in Marion County, Iowa has water-quality measurements published by Iowa DNR, shown here as reported. Maximum depth: 20 ft. Surface area: 8619 acres.
Is Lake Red Rock safe to swim in?: Nutrient and algae readings are not a swimming clearance. Lake Red Rock is listed impaired under Clean Water Act §303(d) (IR 5) for pathogens (E. coli, fecal), turbidity. Check local advisories before you swim.
How deep is Lake Red Rock?: Lake Red Rock has a maximum depth of 20 feet. The lake covers 8619 acres.
Are there boat ramps on Lake Red Rock?: Lake Red Rock has 3 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Cordova, Elk Rock A Access, Elk Rock B Access. Public access is listed as yes.
Can I fish at Lake Red Rock?: Lake Red Rock has 3 documented boat landings in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Iowa's fish and wildlife agency, so check its current regulations before you go.
Are there campgrounds on Lake Red Rock?: Lake Red Rock has 1 public campground from USGS The National Map within 5 km, including Elk Rock Campground and Boat Ramp. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.