Lyon Co State Fishing Lake
Lyon County, KansasView 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.
- 33 ft max depth
- Public access
- Limited data
Lyon Co State Fishing Lake in Lyon County, Kansas is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 4.6 ft visibility. Phosphorus: 20 µg/L. Chlorophyll-a (algae): 7.2 µg/L.
- Clarity
- 4.6 ft
- Max depth
- ~33 ft est.
- Phosphorus
- 20 µg/L
- Chlorophyll-a
- 7.2 µg/L
- Public access
- Yes
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Watch Lyon Co State Fishing Lake’s letter
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Why Lyon Co State Fishing 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 Lyon Co State Fishing 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.
Lyon Co State Fishing Lake is a lake in Lyon County, Kansas with an estimated average depth of about 33 feet. Limited fish-species data available. Public access is available.
Source: EPA Water Quality Portal sampling records, KDHE, last sampled 2014-07-09. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Lyon Co State Fishing Lake
These readings exist but are not enough for an A–F grade — see why.
Murky, only visible to about 4.6 ft. Phosphorus 20 µg/L. Chlorophyll-a 7.2 µg/L. TSI 51.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.6 ft | Not graded |
| Phosphorus | 20 µg/L | Not graded |
| Chlorophyll-a (Algae) | 7.2 µg/L | Not graded |
| Trophic State Index (TSI) | 51 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~33 ft est. |
| Average Depth | ~10 ft est. |
| Public Access | Yes |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Kansas has not published bathymetry for Lyon Co State Fishing Lake.
Lake Size & Watershed
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.
Fishing Lyon Co State Fishing Lake
Reservoir Info (USACE NID)
Lyon Co State Fishing Lake is a man-made reservoir impounded by the Lyon County State Fishing Lake (completed 1933) on the Duck Creek-Tr, 55 ft tall and 2,250 ft long.
- Normal storage
- 1,890 ac-ft
- Max storage
- 3,105 ac-ft
- Hazard class
- Low
- Owner
- KANSAS DEPT OF WILDLIFE PARKS & TOURISM
Source: USACE National Inventory of Dams, NID ID KS00881 · Operator website · Matched by proximity (0.19 km)
Graded lakes near Lyon Co State Fishing Lake
Lyon Co State Fishing Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Lyon County
Frequently asked questions about Lyon Co State Fishing Lake
Where is Lyon Co State Fishing Lake?
- Lyon Co State Fishing Lake is a lake in Lyon 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 Lyon Co State Fishing Lake?
- Lyon Co State Fishing Lake in Lyon County, Kansas is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 4.6 ft visibility. Phosphorus: 20 µg/L. Chlorophyll-a (algae): 7.2 µg/L.
Is Lyon Co State Fishing Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
How deep is Lyon Co State Fishing Lake?
- No published bathymetric survey covers Lyon Co State Fishing Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 33 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Explore Lyon Co State Fishing Lake across LakeQuality
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Where this data comes from
5 measurements from 1 monitoring station, 2014. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Kansas Department Of Health And Environment
21KAN001_WQX5 samples · 2014
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
Lake size & watershed from HydroLAKES (HydroSHEDS)