Fontenelle Reservoir Caseknife Canyon
Lincoln County, WyomingView mapDirections
Not enough samples to grade — the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity. No letter yet. Here is what we do have.
- Limited data
Fontenelle Reservoir Caseknife Canyon in Lincoln County, Wyoming is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 9.5 ft visibility. Chlorophyll-a (algae): 4.7 µg/L.
- Clarity
- 9.5 ft
- Chlorophyll-a
- 4.7 µg/L
- Trend
- ↑ Improving
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Watch Fontenelle Reservoir Caseknife Canyon’s letter
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Why Fontenelle Reservoir Caseknife Canyon 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 Fontenelle Reservoir Caseknife Canyon, the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity. Sampling here has recorded water clarity and algae (chlorophyll-a), but not phosphorus.
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 Wyoming DEQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Fontenelle Reservoir Caseknife Canyon is a lake in Lincoln County, Wyoming. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2014-10-15. 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 Fontenelle Reservoir Caseknife Canyon
These readings exist but are not enough for an A–F grade — see why.
Moderate clarity, visible to about 9.5 ft. Chlorophyll-a 4.7 µg/L. TSI 45.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 9.5 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | 4.7 µg/L | Not graded |
| Trophic State Index (TSI) | 45 | Mesotrophic |
Moderate nutrients, good water quality
Fishing Fontenelle Reservoir Caseknife Canyon
Water Quality Trend: ↑ Improving
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.7 m/yr | 3 |
Nearby Lakes in Lincoln County
Frequently asked questions about Fontenelle Reservoir Caseknife Canyon
Where is Fontenelle Reservoir Caseknife Canyon?
- Fontenelle Reservoir Caseknife Canyon is a lake in Lincoln County, Wyoming. LakeQuality has not rated this lake (UNRATED) — the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity.
What is the water quality grade for Fontenelle Reservoir Caseknife Canyon?
- Fontenelle Reservoir Caseknife Canyon in Lincoln County, Wyoming is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 9.5 ft visibility. Chlorophyll-a (algae): 4.7 µg/L.
Is Fontenelle Reservoir Caseknife Canyon safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
15 measurements from 1 monitoring station, 2012–2014. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- UC Region of USBOR
UC_REGION_USBOR_WQX15 samples · 2012–2014
Analytical methods
- Standard Methods for the Examination of Water and Wastewater
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.