Miami Co State Fishing Lake
Miami County, Kansas102 acresView mapDirections
Nutrients and algae run well above the regional average.
↓ down from D at the last regrade
- Hypereutrophic
- Impaired · Nutrients (phosphorus, nitrogen)
- #3 of 3 in the county
- 14 ft max depth
- Public access
- Limited data
Miami Co State Fishing Lake in Miami County, Kansas has a water quality grade of F (Algae-prone). Water clarity: 2 ft visibility. Phosphorus: 90 µg/L. Chlorophyll-a (algae): 53.1 µg/L. Surface area: 101.5 acres.
- Clarity
- 2 ft
- Max depth
- ~14 ft est.
- Area
- 102 acres
- Type
- Hypereutrophic
- Phosphorus
- 90 µg/L
- Chlorophyll-a
- 53.1 µg/L
- Trend
- ↓ Declining
- Public access
- Yes
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Stays near Miami Co State Fishing Lake
Compare lakeside cabins, hotels, and vacation rentals near Miami Co State Fishing Lake in Miami 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. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around Miami Co State Fishing Lake are listed below.
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Watch Miami Co State Fishing Lake’s letter
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Miami Co State Fishing Lake is a 102-acre highly nutrient-loaded hypereutrophic lake in Miami County, Kansas with an estimated average depth of about 14 feet. Water quality is graded F based on 1 sampling years through 2018. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available. Compared to the 2 other monitored lakes in Miami County, Miami Co State Fishing Lake ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, KDHE, last sampled 2018-07-10. Grade methodology: LakeQuality methodology.
Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
The F is nutrients and algae, not a swimming clearance. Miami Co State Fishing Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen), pH / acidity. Check local advisories before you swim.
Water Quality Grade: F (Algae-prone)
Very murky, less than 2 ft of visibility. Phosphorus 90 µg/L. Chlorophyll-a 53.1 µg/L. TSI 69. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2 ft | Not graded |
| Phosphorus | 90 µg/L | Not graded |
| Chlorophyll-a (Algae) | 53.1 µg/L | Poor |
| Trophic State Index (TSI) | 69 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~14 ft est. |
| Average Depth | ~13 ft est. |
| Surface Area | 102 acres |
| 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 Miami 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 Miami Co State Fishing Lake
Water Quality Trend: ↓ Declining
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | -0.007 m/yr | 2 |
| Phosphorus | ↓ Declining | +8.33 µg/L/yr | 2 |
| Chlorophyll-a | ↓ Declining | +6.48 µg/L/yr | 2 |
Reservoir Info (USACE NID)
Miami Co State Fishing Lake is a man-made reservoir impounded by the Miami Co. State Fishing Lake (completed 1941) on the Marais Des Cygnes River-Tr, 28 ft tall and 6,200 ft long.
- Surface area
- 101.5 ac
- Normal storage
- 473 ac-ft
- Max storage
- 789 ac-ft
- Drainage area
- 1.21 sq mi
- Hazard class
- Low
- Owner
- KANSAS DEPT OF WILDLIFE PARKS & TOURISM
Source: USACE National Inventory of Dams, NID ID KS00884 · Operator website
EPA Impairment Status
Miami Co State Fishing 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-LM043601 · Official waterbody report · Matched by proximity (0.22 km)
County Ranking
Ranked #3 of 3 lakes in Miami County
Nearby Lakes in Miami County
Frequently asked questions about Miami Co State Fishing Lake
Where is Miami Co State Fishing Lake?
- Miami Co State Fishing Lake is a lake in Miami County, Kansas. LakeQuality grades it F for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Miami Co State Fishing Lake?
- Miami Co State Fishing Lake in Miami County, Kansas has a water quality grade of F (Algae-prone). Water clarity: 2 ft visibility. Phosphorus: 90 µg/L. Chlorophyll-a (algae): 53.1 µg/L. Surface area: 101.5 acres.
Is Miami Co State Fishing Lake safe to swim in?
- The F is nutrients and algae, not a swimming clearance. Miami Co State Fishing Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen), pH / acidity. Check local advisories before you swim.
How deep is Miami Co State Fishing Lake?
- No published bathymetric survey covers Miami Co State Fishing Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 14 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 101.5 acres.
Explore Miami Co State Fishing Lake across LakeQuality
11.5 mi away · cable-pulled, no boat wake
Species activity outlook by water temperature and season
Where to stay at Kansas's top lakes, each with its grade
Very high nutrients, dense algae, poor clarity
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Where this data comes from
8 measurements from 1 monitoring station, 2012–2018. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Kansas Department Of Health And Environment
21KAN001_WQX8 samples · 2012–2018
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
Lake size & watershed from HydroLAKES (HydroSHEDS)