Murray Gill Lake
Chautauqua County, Kansas473 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
Murray Gill Lake in Chautauqua County, Kansas is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 7.2 ft visibility. Phosphorus: 47.5 µg/L. Chlorophyll-a (algae): 4.7 µg/L. Surface area: 473 acres.
- Clarity
- 7.2 ft
- Area
- 473 acres
- Phosphorus
- 47.5 µg/L
- Chlorophyll-a
- 4.7 µg/L
- Trend
- → Stable
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Watch Murray Gill Lake’s letter
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Why Murray Gill 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 Murray Gill 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.
Murray Gill Lake is a 473-acre lake in Chautauqua County, Kansas. Water clarity is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, KDHE, last sampled 2017-06-26. 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 Murray Gill Lake
These readings exist but are not enough for an A–F grade — see why.
Moderate clarity, visible to about 7.2 ft. Phosphorus 47.5 µg/L. Chlorophyll-a 4.7 µg/L. TSI 51.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 7.2 ft | Not graded |
| Phosphorus | 47.5 µg/L | Not graded |
| Chlorophyll-a (Algae) | 4.7 µg/L | Not graded |
| Trophic State Index (TSI) | 51 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 473 acres |
No bathymetric survey has been published for Murray Gill Lake, so its depth is not documented here.
Fishing Murray Gill Lake
Water Quality Trend: → Stable
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.206 m/yr | 2 |
| Phosphorus | → Stable | -0.16 µg/L/yr | 2 |
| Chlorophyll-a | ↓ Declining | +0.2 µg/L/yr | 2 |
Reservoir Info (USACE NID)
Murray Gill Lake is a man-made reservoir impounded by the Dam No 18-26 (Boy Scout Lake) (completed 1965), built primarily for flood risk reduction on the North Caney Creek; earth-type dam, 76 ft tall and 1,900 ft long.
- Surface area
- 473 ac
- Normal storage
- 9,572 ac-ft
- Max storage
- 16,020 ac-ft
- Drainage area
- 26.8 sq mi
- Hazard class
- High
- Owner
- TWIN CANEY WJD NO 34
All listed purposes: Flood Risk Reduction;Recreation.
Source: USACE National Inventory of Dams, NID ID KS02201 · Operator website · Matched by proximity (0.26 km)
Nearby Lakes in Chautauqua County
Frequently asked questions about Murray Gill Lake
Where is Murray Gill Lake?
- Murray Gill Lake is a lake in Chautauqua 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 Murray Gill Lake?
- Murray Gill Lake in Chautauqua County, Kansas is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 7.2 ft visibility. Phosphorus: 47.5 µg/L. Chlorophyll-a (algae): 4.7 µg/L. Surface area: 473 acres.
Is Murray Gill Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
Explore Murray Gill Lake across LakeQuality
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Where this data comes from
5 measurements from 1 monitoring station, 2017. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Kansas Department Of Health And Environment
21KAN001_WQX5 samples · 2017
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.