Farmington Bay Lake
Davis County, UtahView mapDirections
Utah DWQ publishes the water-quality measurements for Farmington Bay Lake. Here is what has been measured.
- Hypereutrophic
Farmington Bay Lake in Davis County, Utah has water-quality measurements published by Utah DWQ, shown here as reported. Phosphorus: 405 µg/L. Chlorophyll-a (algae): 106 µg/L.
Farmington Bay Lake is a highly nutrient-loaded hypereutrophic lake in Davis County, Utah. Phosphorus level is declining over recent sampling years. Compared to the 5 other monitored lakes in Davis County, Farmington Bay Lake ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, Utah DWQ, last sampled 2023-10-25. Methodology: how these readings are compared.
Vrbo is where to look for cabins and lake homes around Farmington Bay Lake, and Booking.com and Expedia search hotels near the lake for your dates.
Swimming conditions
Readings onlyAlgae risk
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 Farmington Bay Lake is safe to swim in today is a call for the Utah Division of Water Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Farmington Bay Lake
These are the measurements Utah DWQ publishes for Farmington Bay Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 405 µg/L. Chlorophyll-a 106 µg/L. TSI 84.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 405µg/L | Poor GoodFairPoor |
| Chlorophyll-a (algae) | 106µg/L | Poor GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 84 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
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Stays near Farmington Bay Lake
Compare lakeside cabins, hotels, and vacation rentals near Farmington Bay Lake in Davis County, Utah — 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. The water-quality readings cover nutrients and algae, not lodging. Cabins and rentals around Farmington Bay Lake are listed below.
Top-rated places to stay near Farmington Bay Lake
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Fishing Farmington Bay Lake
Water Quality Trend: Stable
Based on 7 years of monitoring (2012–2023).
Phosphorus
Worsening+18.61 µg/L/yr7 years
Chlorophyll-a
Improving-18.65 µg/L/yr6 years
Nearby Lakes in Davis County
Frequently asked questions about Farmington Bay Lake
Where is Farmington Bay Lake?
- Farmington Bay Lake is a lake in Davis County, Utah. Its water-quality measurements are published by Utah DWQ and shown on this page as reported.
What is the water quality of Farmington Bay Lake?
- Farmington Bay Lake in Davis County, Utah has water-quality measurements published by Utah DWQ, shown here as reported. Phosphorus: 405 µg/L. Chlorophyll-a (algae): 106 µg/L.
Is Farmington Bay Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Farmington Bay Lake across LakeQuality
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Where this data comes from
34 measurements from 1 monitoring station, 2012–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- USGS Utah Water Science Center
USGS-UT34 samples · 2012–2023
Analytical methods
- Nutrients, brines, colorimetry
- P, wu, WCA, persulfate CF color
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.