Wyandotte County Lake
Wyandotte County, Kansas375 acresView mapDirections
KDHE publishes the water-quality measurements for Wyandotte County Lake. Here is what has been measured.
- Impaired · Nutrients (phosphorus, nitrogen)
- Public access
- Limited data
Wyandotte County Lake in Wyandotte County, Kansas has water-quality measurements published by KDHE, shown here as reported. Water clarity: 10.2 ft visibility. Phosphorus: 20 µg/L. Chlorophyll-a (algae): 2.8 µg/L. Surface area: 375 acres.
Wyandotte County Lake is a 375-acre lake in Wyandotte County, Kansas. Overall water quality is improving over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, KDHE, last sampled 2012-06-18. Methodology: how these readings are compared.
What Wyandotte County Lake is good for
From access and monitoring records, not editorial picks.
- Clear water10.2 ft of visibility
- Boat launch1 documented ramp
Swimming conditions
No readingRecreation use not supported
Nutrient and algae readings are not a swimming clearance. Wyandotte County Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Wyandotte County 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 Wyandotte County Lake
These are the measurements KDHE publishes for Wyandotte County Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 10.2 ft. Phosphorus 20 µg/L. Chlorophyll-a 2.8 µg/L. TSI 44.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 10.2ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 20µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 2.8µg/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. | 44 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Wyandotte County Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
375 acres
Public access
Yes
Listed by KDHE
No bathymetric survey has been published for Wyandotte County Lake, so its depth is not documented here.
Recreation & Access
- Wyandotte County LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
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Fishing Wyandotte County Lake
Water quality readings over time
2 seasons of samples on record (2012–2017). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Improving2 years
Phosphorus
Improving-1.2 µg/L/yr2 years
Chlorophyll-a
Worsening+0.38 µg/L/yr2 years
Reservoir Info (USACE NID)
Wyandotte County Lake is a man-made reservoir impounded by the Wyandotte County Lake Dam (completed 1941), built primarily for recreation on the Missouri River; earth-type dam, 139 ft tall and 1,790 ft long.
- Surface area
- 375 ac
- Normal storage
- 10,000 ac-ft
- Max storage
- 14,700 ac-ft
- Drainage area
- 8 sq mi
- Hazard class
- Significant
- Owner
- WYANDOTTE COUNTY, UNIFIED GOVT OF
Source: USACE National Inventory of Dams, NID ID KS02555 · Operator website
EPA Impairment Status
Wyandotte County Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Drinking water, Aquatic life, Recreation.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit KS-LM042401 · Official waterbody report
Nearby Lakes in Wyandotte County
Frequently asked questions about Wyandotte County Lake
Where is Wyandotte County Lake?
- Wyandotte County Lake is a lake in Wyandotte County, Kansas. Its water-quality measurements are published by KDHE and shown on this page as reported.
What is the water quality of Wyandotte County Lake?
- Wyandotte County Lake in Wyandotte County, Kansas has water-quality measurements published by KDHE, shown here as reported. Water clarity: 10.2 ft visibility. Phosphorus: 20 µg/L. Chlorophyll-a (algae): 2.8 µg/L. Surface area: 375 acres.
Is Wyandotte County Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Wyandotte County Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Are there boat ramps on Wyandotte County Lake?
- Wyandotte County Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Wyandotte County Lake. Public access is listed as yes.
Can I fish at Wyandotte County Lake?
- Wyandotte County 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.
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Where this data comes from
5 measurements from 1 monitoring station, 2012. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Kansas Department Of Health And Environment
21KAN001_WQX5 samples · 2012
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
Named boat-access points from the USGS National Boat Ramps inventory