Madison City Lake
Greenwood County, Kansas115 acresView mapDirections
KDHE publishes the water-quality measurements for Madison City Lake. Here is what has been measured.
- Eutrophic
- 32 ft max depth
- Limited data
Madison City Lake in Greenwood County, Kansas has water-quality measurements published by KDHE, shown here as reported. Water clarity: 4.1 ft visibility. Phosphorus: 20 µg/L. Chlorophyll-a (algae): 7.5 µg/L. Surface area: 114.6 acres.
Madison City Lake is a 115-acre productive, nutrient-rich eutrophic lake in Greenwood County, Kansas with an estimated average depth of about 32 feet. Overall water quality is improving over recent sampling years. Compared to the 2 other monitored lakes in Greenwood County, Madison City Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, KDHE, last sampled 2018-06-04. Methodology: how these readings are compared.
Madison City Lake covers about 110 acres in Greenwood County. For a place on the water, look through cabin and lake-house rentals near Madison City Lake on Vrbo. For a hotel or motel room, Booking.com and Expedia both search around the lake.
Swimming conditions
Readings onlyLimited data
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. Check local advisories before you swim.
Whether Madison City 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 Madison City Lake
These are the measurements KDHE publishes for Madison City 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 4.1 ft. Phosphorus 20 µg/L. Chlorophyll-a 7.5 µg/L. TSI 51.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 4.1ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 20µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 7.5µg/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. | 51 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Madison City Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~32 ft est.
Surface area
115 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 Madison City Lake.
Lake Size & Watershed
Watershed (drainage) area
4 sq mi
HydroLAKES / HydroSHEDS
Shoreline
1.9 mi
HydroLAKES / HydroSHEDS
Elevation
1,168 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 Madison City Lake
Compare lakeside cabins, hotels, and vacation rentals near Madison City Lake in Greenwood 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 Madison City Lake
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Fishing Madison City Lake
Water quality readings over time
2 seasons of samples on record (2014–2018). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Improving2 years
Phosphorus
Worsening+2 µg/L/yr2 years
Chlorophyll-a
Improving-0.4 µg/L/yr2 years
Reservoir Info (USACE NID)
Madison City Lake is a man-made reservoir impounded by the Dam No 7-8 (completed 1970), built primarily for flood risk reduction on the Holderman Creek-Tr; earth-type dam, 58 ft tall and 1,870 ft long.
- Surface area
- 114.6 ac
- Normal storage
- 1,357 ac-ft
- Max storage
- 3,517 ac-ft
- Hazard class
- Significant
- Owner
- MADISON, CITY OF
All listed purposes: Flood Risk Reduction;Water Supply.
Source: USACE National Inventory of Dams, NID ID KS02309 · Operator website · Matched by proximity (0.12 km)
Nearby Lakes in Greenwood County
Frequently asked questions about Madison City Lake
Where is Madison City Lake?
- Madison City Lake is a lake in Greenwood County, Kansas. Its water-quality measurements are published by KDHE and shown on this page as reported.
What is the water quality of Madison City Lake?
- Madison City Lake in Greenwood County, Kansas has water-quality measurements published by KDHE, shown here as reported. Water clarity: 4.1 ft visibility. Phosphorus: 20 µg/L. Chlorophyll-a (algae): 7.5 µg/L. Surface area: 114.6 acres.
Is Madison City Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Madison City Lake?
- No published bathymetric survey covers Madison City Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 32 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 114.6 acres.
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Where this data comes from
7 measurements from 1 monitoring station, 2014–2018. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Kansas Department Of Health And Environment
21KAN001_WQX7 samples · 2014–2018
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
Lake size & watershed from HydroLAKES (HydroSHEDS)