Brown Co State Fishing Lake
Brown 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.
- Impaired · Noxious aquatic plants
- 37 ft max depth
- Limited data
Brown Co State Fishing Lake in Brown County, Kansas is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 1.3 ft visibility. Phosphorus: 88 µg/L. Chlorophyll-a (algae): 64.5 µg/L.
- Clarity
- 1.3 ft
- Max depth
- ~37 ft est.
- Phosphorus
- 88 µg/L
- Chlorophyll-a
- 64.5 µg/L
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Watch Brown Co State Fishing Lake’s letter
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Why Brown 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 Brown 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.
Brown Co State Fishing Lake is a lake in Brown County, Kansas with an estimated average depth of about 37 feet.
Source: EPA Water Quality Portal sampling records, KDHE, last sampled 2017-08-23. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Brown Co State Fishing Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for noxious aquatic plants, nutrients (phosphorus, nitrogen), oxygen depletion (low DO), pH / acidity. Check local advisories before you swim.
Water quality measurements for Brown Co State Fishing Lake
These readings exist but are not enough for an A–F grade — see why.
Very murky, less than 1.3 ft of visibility. Phosphorus 88 µg/L. Chlorophyll-a 64.5 µg/L. TSI 71.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.3 ft | Not graded |
| Phosphorus | 88 µg/L | Not graded |
| Chlorophyll-a (Algae) | 64.5 µg/L | Not graded |
| Trophic State Index (TSI) | 71 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~37 ft est. |
| Average Depth | ~11 ft est. |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Kansas has not published bathymetry for Brown 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 Brown Co State Fishing Lake
Reservoir Info (USACE NID)
Brown Co State Fishing Lake is a man-made reservoir impounded by the Brown CO State Fishing Lake (completed 1953), built primarily for fish and wildlife pond on the Wolf River-Tr; earth-type dam, 42 ft tall and 1,210 ft long.
- Normal storage
- 490 ac-ft
- Max storage
- 1,020 ac-ft
- Hazard class
- Low
- Owner
- KANSAS DEPT OF WILDLIFE PARKS & TOURISM
Source: USACE National Inventory of Dams, NID ID KS00865 · Operator website
EPA Impairment Status
Brown 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-LM010301 · Official waterbody report · Matched by proximity (0.5 km)
Graded lakes near Brown Co State Fishing Lake
Brown Co State Fishing Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Brown County
Frequently asked questions about Brown Co State Fishing Lake
Where is Brown Co State Fishing Lake?
- Brown Co State Fishing Lake is a lake in Brown 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 Brown Co State Fishing Lake?
- Brown Co State Fishing Lake in Brown County, Kansas is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 1.3 ft visibility. Phosphorus: 88 µg/L. Chlorophyll-a (algae): 64.5 µg/L.
Is Brown Co State Fishing Lake safe to swim in?
- The letter is not a swimming clearance. Brown Co State Fishing Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for noxious aquatic plants, nutrients (phosphorus, nitrogen), oxygen depletion (low DO), pH / acidity. Check local advisories before you swim.
How deep is Brown Co State Fishing Lake?
- No published bathymetric survey covers Brown Co State Fishing Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 37 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Explore Brown Co State Fishing Lake across LakeQuality
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Where this data comes from
5 measurements from 1 monitoring station, 2017. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Kansas Department Of Health And Environment
21KAN001_WQX5 samples · 2017
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)