Colwich City Lake
Sedgwick County, Kansas8 acresView mapDirections
KDHE publishes the water-quality measurements for Colwich City Lake. Here is what has been measured.
- Limited data
Colwich City Lake in Sedgwick County, Kansas has water-quality measurements published by KDHE, shown here as reported. Water clarity: 0.8 ft visibility. Phosphorus: 900 µg/L. Surface area: 8.04 acres.
Colwich City Lake is a 8-acre lake in Sedgwick County, Kansas.
Source: EPA Water Quality Portal sampling records, KDHE, last sampled 2013-07-15. 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 Colwich 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 Colwich City Lake
These are the measurements KDHE publishes for Colwich City 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 0.8 ft of visibility. Phosphorus 900 µg/L. TSI 91.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 0.8ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 900µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | No reading 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. | 91 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Colwich City Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
8 acres
No bathymetric survey has been published for Colwich City Lake, so its depth is not documented here.
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Fishing Colwich City Lake
Reservoir Info (USACE NID)
Colwich City Lake is a man-made reservoir impounded by the Colwich Park Dam (completed 2008) on the Cowskin Creek-Tr; earth-type dam, 10 ft tall and 1,797 ft long.
- Surface area
- 8.04 ac
- Normal storage
- 73.5 ac-ft
- Max storage
- 170.85 ac-ft
- Drainage area
- 0.49 sq mi
- Hazard class
- High
- Owner
- COLWICH, CITY OF
Source: USACE National Inventory of Dams, NID ID KS09310 · Operator website · Matched by proximity (0.11 km)
Nearby Lakes in Sedgwick County
Frequently asked questions about Colwich City Lake
Where is Colwich City Lake?
- Colwich City Lake is a lake in Sedgwick County, Kansas. Its water-quality measurements are published by KDHE and shown on this page as reported.
What is the water quality of Colwich City Lake?
- Colwich City Lake in Sedgwick County, Kansas has water-quality measurements published by KDHE, shown here as reported. Water clarity: 0.8 ft visibility. Phosphorus: 900 µg/L. Surface area: 8.04 acres.
Is Colwich City Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Colwich City Lake across LakeQuality
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Where this data comes from
2 measurements from 1 monitoring station, 2013. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Kansas Department Of Health And Environment
21KAN001_WQX2 samples · 2013
Analytical methods
- Depth, Secchi disk depth
- Phosphorus by Colorimetry
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.