Wyandotte County Lake
Wyandotte County, Kansas375 acresView mapDirections
Not enough samples to grade — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). No letter yet. Here is what we do have.
- Impaired · Nutrients (phosphorus, nitrogen)
- Public access
- Limited data
Wyandotte County Lake in Wyandotte County, Kansas is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 10.2 ft visibility. Phosphorus: 20 µg/L. Chlorophyll-a (algae): 2.8 µg/L. Surface area: 375 acres.
- Clarity
- 10.2 ft
- Area
- 375 acres
- Phosphorus
- 20 µg/L
- Chlorophyll-a
- 2.8 µg/L
- Trend
- ↑ Improving
- Public access
- Yes
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Watch Wyandotte County Lake’s letter
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Why Wyandotte County Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Wyandotte County Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded water clarity, phosphorus and algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by KDHE and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
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. Grade methodology: LakeQuality methodology.
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 Safety
Not ratedLimited data
The letter is 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.
Water quality measurements for Wyandotte County Lake
These readings exist but are not enough for an A–F grade — see why.
Good clarity, visible to about 10.2 ft. Phosphorus 20 µg/L. Chlorophyll-a 2.8 µg/L. TSI 44.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 10.2 ft | Not graded |
| Phosphorus | 20 µg/L | Not graded |
| Chlorophyll-a (Algae) | 2.8 µg/L | Not graded |
| Trophic State Index (TSI) | 44 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 375 acres |
| Public Access | Yes |
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
Fishing Wyandotte County Lake
Water Quality Trend: ↑ Improving
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.074 m/yr | 2 |
| Phosphorus | ↑ Improving | -1.2 µg/L/yr | 2 |
| Chlorophyll-a | ↓ Declining | +0.38 µg/L/yr | 2 |
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
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit KS-LM042401 · Official waterbody report · Matched by proximity (1.28 km)
Graded lakes near Wyandotte County Lake
Wyandotte County Lake has no grade, but these lakes within a short drive do.
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. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Wyandotte County Lake?
- Wyandotte County Lake in Wyandotte County, Kansas is not rated for water quality — its monitoring record does not meet the evidence bar. 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?
- The letter is 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.
Explore Wyandotte County Lake across LakeQuality
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Other Lakes in Kansas
Mesotrophic Lakes in Kansas
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)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated 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