Where is Sinissippi Lake?

Sinissippi Lake is a lake in Dodge County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.

How deep is Sinissippi Lake?

Sinissippi Lake has a maximum depth of 8 feet and an average depth of 5 feet. The lake covers 2004 acres.

Are there boat ramps on Sinissippi Lake?

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

Can I fish at Sinissippi Lake?

Sinissippi 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 Wisconsin's fish and wildlife agency, so check its current regulations before you go.

Sinissippi Lake

Dodge County, Wisconsin2,004 acresView map Directions

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

Max depth

8 ft

Bathymetric survey

Area

2,004 acres

Surface area

Shoreline

20.9 mi

Measured length

Impaired · Nutrients (phosphorus, nitrogen)
8 ft max depth
Public access

See the measurements Directions Where to stay

Sinissippi Lake in Dodge County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 8 ft. Surface area: 2004 acres.

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Sinissippi Lake is a 2,004-acre lake in Dodge County, Wisconsin with a maximum depth of 8 feet (5-foot average). Limited fish-species data available. Public access is available with 1 public boat landing.

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

What Sinissippi Lake is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp
Big water2,004 acres

Swimming conditions

No reading

Recreation use not supported

Nutrient and algae readings are not a swimming clearance. Sinissippi Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen), turbidity. Check local advisories before you swim.

Whether Sinissippi Lake is safe to swim in today is a call for the Wisconsin 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 Sinissippi Lake

These are the measurements Wisconsin DNR publishes for Sinissippi 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 Sinissippi Lake

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

Lake Details

Max depth

8 ft

Average depth

5 ft

Surface area

2,004 acres

Shoreline

20.9 mi

Public access

Yes

Listed by Wisconsin DNR

Recreation & Access

Boat Landings

Yes

Public Access

Wildcat RoadPublic

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

Stays via Stay22

Stays near Sinissippi Lake

Compare lakeside cabins, hotels, and vacation rentals near Sinissippi Lake in Dodge County, Wisconsin — 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 Sinissippi Lake

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Fishing Sinissippi Lake

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

EPA Impairment Status

Sinissippi Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).

Causes of impairment

Nutrients (phosphorus, nitrogen)Turbidity

Designated uses not supporting: Aquatic life, Recreation.

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit WI10001301 · Official waterbody report

Nearby Lakes in Dodge County

Neosho Millpond6.8 miView →Collins Lake11.3 miView →Beaver Dam Lake15.3 miView →Mud Lake16.8 miView →Chub Lake—View →Beaver Dam Lake1 ft clear · Hypereutrophic—View →

Frequently asked questions about Sinissippi Lake

Where is Sinissippi Lake?: Sinissippi Lake is a lake in Dodge County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Sinissippi Lake?: Sinissippi Lake in Dodge County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 8 ft. Surface area: 2004 acres.
Is Sinissippi Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Sinissippi Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen), turbidity. Check local advisories before you swim.
How deep is Sinissippi Lake?: Sinissippi Lake has a maximum depth of 8 feet and an average depth of 5 feet. The lake covers 2004 acres.
Are there boat ramps on Sinissippi Lake?: Sinissippi Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Wildcat Road. Public access is listed as yes.
Can I fish at Sinissippi Lake?: Sinissippi 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 Wisconsin's fish and wildlife agency, so check its current regulations before you go.