La Cygne Lake
Linn County, Kansas2,600 acresView mapDirections
KDHE publishes the water-quality measurements for La Cygne Lake. Here is what has been measured.
- Impaired · Nutrients (phosphorus, nitrogen)
- 69 ft max depth
- Public access
- Limited data
La Cygne Lake in Linn County, Kansas has water-quality measurements published by KDHE, shown here as reported. Water clarity: 2.4 ft visibility. Phosphorus: 37 µg/L. Chlorophyll-a (algae): 56 µg/L. Surface area: 2600 acres.
La Cygne Lake is a 2,600-acre lake in Linn County, Kansas with an estimated average depth of about 69 feet. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, KDHE, last sampled 2016-07-11. Methodology: how these readings are compared.
La Cygne Lake covers about 2,600 acres in Linn County. It has one public boat landing. If you are planning to stay, you can search lake houses and cabins around La Cygne Lake on Vrbo, or look for a hotel room near the lake on Booking.com or Expedia.
What La Cygne Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
- Big water2,600 acres
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. La Cygne Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether La Cygne Lake is safe to swim in today is a call for the Kansas Department of Health and Environment and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for La Cygne Lake
These are the measurements KDHE publishes for La Cygne Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 2.4 ft of visibility. Phosphorus 37 µg/L. Chlorophyll-a 56 µg/L. TSI 64.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 2.4ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 37µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 56µg/L | Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water. |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 64 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about La Cygne Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~69 ft est.
Surface area
2,600 acres
Public access
Yes
Listed by KDHE
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Kansas has not published bathymetry for La Cygne Lake.
Lake Size & Watershed
Watershed (drainage) area
60 sq mi
HydroLAKES / HydroSHEDS
Shoreline
14.5 mi
HydroLAKES / HydroSHEDS
Elevation
846 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Recreation & Access
- La Cygnes-EastPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near La Cygne Lake
Compare lakeside cabins, hotels, and vacation rentals near La Cygne Lake in Linn County, Kansas — 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 La Cygne Lake
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Fishing La Cygne Lake
Reservoir Info (USACE NID)
La Cygne Lake is a man-made reservoir impounded by the Lacygne Lake Dam (completed 1971), built primarily for other on the North Sugar Creek; earth-type dam, 76 ft tall and 6,970 ft long.
- Surface area
- 2,600 ac
- Normal storage
- 40,000 ac-ft
- Max storage
- 85,000 ac-ft
- Drainage area
- 57.5 sq mi
- Hazard class
- High
- Owner
- EVERGY, INC.
All listed purposes: Other;Recreation.
Source: USACE National Inventory of Dams, NID ID KS01305 · Operator website
EPA Impairment Status
La Cygne Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit KS-LM044002 · Official waterbody report
Nearby Lakes in Linn County
Frequently asked questions about La Cygne Lake
Where is La Cygne Lake?
- La Cygne Lake is a lake in Linn County, Kansas. Its water-quality measurements are published by KDHE and shown on this page as reported.
What is the water quality of La Cygne Lake?
- La Cygne Lake in Linn County, Kansas has water-quality measurements published by KDHE, shown here as reported. Water clarity: 2.4 ft visibility. Phosphorus: 37 µg/L. Chlorophyll-a (algae): 56 µg/L. Surface area: 2600 acres.
Is La Cygne Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. La Cygne Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is La Cygne Lake?
- No published bathymetric survey covers La Cygne Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 69 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 2600 acres.
Are there boat ramps on La Cygne Lake?
- La Cygne Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include La Cygnes-East. Public access is listed as yes.
Can I fish at La Cygne Lake?
- La Cygne 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 Kansas's fish and wildlife agency, so check its current regulations before you go.
Explore La Cygne Lake across LakeQuality
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Where this data comes from
5 measurements from 1 monitoring station, 2016. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Kansas Department Of Health And Environment
21KAN001_WQX5 samples · 2016
Analytical methods
- Depth, Secchi disk depth
- Phosphorus by Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Lake size & watershed from HydroLAKES (HydroSHEDS)
Named boat-access points from the USGS National Boat Ramps inventory