Blue Mound City Lake
Linn County, Kansas35 acresView 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.
- Limited data
Blue Mound City Lake in Linn County, Kansas is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 4.9 ft visibility. Phosphorus: 34.5 µg/L. Chlorophyll-a (algae): 8.3 µg/L. Surface area: 35.2 acres.
- Clarity
- 4.9 ft
- Area
- 35 acres
- Phosphorus
- 34.5 µg/L
- Chlorophyll-a
- 8.3 µg/L
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Watch Blue Mound City Lake’s letter
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Why Blue Mound City 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 Blue Mound City 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.
Blue Mound City Lake is a 35-acre lake in Linn County, Kansas.
Source: EPA Water Quality Portal sampling records, KDHE, last sampled 2018-05-29. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Blue Mound City Lake
These readings exist but are not enough for an A–F grade — see why.
Murky, only visible to about 4.9 ft. Phosphorus 34.5 µg/L. Chlorophyll-a 8.3 µg/L. TSI 54.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.9 ft | Not graded |
| Phosphorus | 34.5 µg/L | Not graded |
| Chlorophyll-a (Algae) | 8.3 µg/L | Not graded |
| Trophic State Index (TSI) | 54 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 35 acres |
No bathymetric survey has been published for Blue Mound City Lake, so its depth is not documented here.
Fishing Blue Mound City Lake
Reservoir Info (USACE NID)
Blue Mound City Lake is a man-made reservoir impounded by the (completed 1959), built primarily for water supply on the South Fork Sugar Creek-Tr; earth-type dam, 35 ft tall and 1,150 ft long.
- Surface area
- 35.2 ac
- Normal storage
- 291.2 ac-ft
- Max storage
- 498 ac-ft
- Hazard class
- Low
- Owner
- BLUE MOUND, CITY OF
Source: USACE National Inventory of Dams, NID ID KS02495 · Operator website
Graded lakes near Blue Mound City Lake
Blue Mound City Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Linn County
Frequently asked questions about Blue Mound City Lake
Where is Blue Mound City Lake?
- Blue Mound City Lake is a lake in Linn 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 Blue Mound City Lake?
- Blue Mound City Lake in Linn County, Kansas is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 4.9 ft visibility. Phosphorus: 34.5 µg/L. Chlorophyll-a (algae): 8.3 µg/L. Surface area: 35.2 acres.
Is Blue Mound City Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
Explore Blue Mound City Lake across LakeQuality
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Where this data comes from
10 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_WQX10 samples · 2012–2018
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.