Geary Co State Fishing Lake
Geary County, Kansas96 acresView mapDirections
KDHE publishes the water-quality measurements for Geary Co State Fishing Lake. Here is what has been measured.
- Eutrophic
- Impaired · Nutrients (phosphorus, nitrogen)
- 67 ft max depth
- Public access
- Limited data
Geary Co State Fishing Lake in Geary County, Kansas has water-quality measurements published by KDHE, shown here as reported. Water clarity: 4.3 ft visibility. Phosphorus: 31.5 µg/L. Chlorophyll-a (algae): 12.8 µg/L. Surface area: 96 acres.
Geary Co State Fishing Lake is a 96-acre productive, nutrient-rich eutrophic lake in Geary County, Kansas with an estimated average depth of about 67 feet. Overall water quality is improving over recent sampling years. Limited fish-species data available. Public access is available.
Source: EPA Water Quality Portal sampling records, KDHE, last sampled 2018-06-12. Methodology: how these readings are compared.
Swimming conditions
Readings onlyRecreation use not supported
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Geary Co State Fishing Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Geary Co State Fishing 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 Geary Co State Fishing Lake
These are the measurements KDHE publishes for Geary Co State Fishing Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 4.3 ft. Phosphorus 31.5 µg/L. Chlorophyll-a 12.8 µg/L. TSI 55.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 4.3ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 31.5µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 12.8µg/L | Good GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 55 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Geary Co State Fishing Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~67 ft est.
Surface area
96 acres
Public access
Yes
Listed by KDHE
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Kansas has not published bathymetry for Geary Co State Fishing Lake.
Lake Size & Watershed
Watershed (drainage) area
7 sq mi
HydroLAKES / HydroSHEDS
Shoreline
2.5 mi
HydroLAKES / HydroSHEDS
Elevation
1,214 ft
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.
Stays via Stay22
Stays near Geary Co State Fishing Lake
Compare lakeside cabins, hotels, and vacation rentals near Geary Co State Fishing Lake in Geary 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.
Top-rated places to stay near Geary Co State Fishing Lake
Prices for Oct 30–Nov 1, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Kansas’s top lakes →
Follow Geary Co State Fishing Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Geary Co State Fishing Lake
Water quality readings over time
2 seasons of samples on record (2012–2018). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Stable2 years
Phosphorus
Improving-1.42 µg/L/yr2 years
Chlorophyll-a
Improving-2.18 µg/L/yr2 years
Reservoir Info (USACE NID)
Geary Co State Fishing Lake is a man-made reservoir impounded by the Geary County State Fishing Lake (completed 1960) on the Lyon Creek-Tr; other-type dam, 60 ft tall and 1,045 ft long.
- Surface area
- 96 ac
- Normal storage
- 1,635 ac-ft
- Max storage
- 2,765 ac-ft
- Hazard class
- Low
- Owner
- KANSAS DEPT OF WILDLIFE PARKS & TOURISM
Source: USACE National Inventory of Dams, NID ID KS00872 · Operator website · Matched by proximity (0.23 km)
EPA Impairment Status
Geary 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
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-LM043201 · Official waterbody report
Nearby Lakes in Geary County
Frequently asked questions about Geary Co State Fishing Lake
Where is Geary Co State Fishing Lake?
- Geary Co State Fishing Lake is a lake in Geary County, Kansas. Its water-quality measurements are published by KDHE and shown on this page as reported.
What is the water quality of Geary Co State Fishing Lake?
- Geary Co State Fishing Lake in Geary County, Kansas has water-quality measurements published by KDHE, shown here as reported. Water clarity: 4.3 ft visibility. Phosphorus: 31.5 µg/L. Chlorophyll-a (algae): 12.8 µg/L. Surface area: 96 acres.
Is Geary Co State Fishing Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Geary Co State Fishing Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Geary Co State Fishing Lake?
- No published bathymetric survey covers Geary Co State Fishing Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 67 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 96 acres.
Can I fish at Geary Co State Fishing Lake?
- Public access to Geary Co State Fishing Lake is listed as yes on the lake record. 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.
Explore Geary Co State Fishing Lake across LakeQuality
More lakes in Kansas
Other Lakes in Kansas
Eutrophic Lakes in Kansas
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)
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
Lake size & watershed from HydroLAKES (HydroSHEDS)