Antelope Lake
Graham County, Kansas83 acresView mapDirections
KDHE publishes the water-quality measurements for Antelope Lake. Here is what has been measured.
- 13 ft max depth
- Limited data
Antelope Lake in Graham County, Kansas has water-quality measurements published by KDHE, shown here as reported. Water clarity: 0.9 ft visibility. Phosphorus: 215 µg/L. Chlorophyll-a (algae): 62 µg/L. Surface area: 83.1 acres.
Antelope Lake is a 83-acre lake in Graham County, Kansas with an estimated average depth of about 13 feet.
Source: EPA Water Quality Portal sampling records, KDHE, last sampled 2016-08-16. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Antelope 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 Antelope Lake
These are the measurements KDHE publishes for Antelope Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 0.9 ft of visibility. Phosphorus 215 µg/L. Chlorophyll-a 62 µg/L. TSI 77.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 0.9ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 215µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 62µg/L | Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water. |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 77 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Antelope Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~13 ft est.
Surface area
83 acres
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Kansas has not published bathymetry for Antelope Lake.
Lake Size & Watershed
Watershed (drainage) area
24 sq mi
HydroLAKES / HydroSHEDS
Shoreline
1.2 mi
HydroLAKES / HydroSHEDS
Elevation
2,375 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.
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Fishing Antelope Lake
Reservoir Info (USACE NID)
Antelope Lake is a man-made reservoir impounded by the Antelope Lake (completed 1996), built primarily for recreation on the Antelope Creek, 38 ft tall and 700 ft long.
- Surface area
- 83.1 ac
- Normal storage
- 773 ac-ft
- Max storage
- 1,838 ac-ft
- Drainage area
- 25 sq mi
- Hazard class
- Low
- Owner
- GRAHAM COUNTY
Source: USACE National Inventory of Dams, NID ID KS02544 · Operator website
Nearby Lakes in Graham County
Frequently asked questions about Antelope Lake
Where is Antelope Lake?
- Antelope Lake is a lake in Graham County, Kansas. Its water-quality measurements are published by KDHE and shown on this page as reported.
What is the water quality of Antelope Lake?
- Antelope Lake in Graham County, Kansas has water-quality measurements published by KDHE, shown here as reported. Water clarity: 0.9 ft visibility. Phosphorus: 215 µg/L. Chlorophyll-a (algae): 62 µg/L. Surface area: 83.1 acres.
Is Antelope Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Antelope Lake?
- No published bathymetric survey covers Antelope Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 13 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 83.1 acres.
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Where this data comes from
5 measurements from 1 monitoring station, 2016. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Kansas Department Of Health And Environment
21KAN001_WQX5 samples · 2016
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
Lake size & watershed from HydroLAKES (HydroSHEDS)