Gsl Farmington Bay Outflow Lake
Davis County, UtahView mapDirections
Nutrients and algae run above the regional average.
↑ up from F at the last regrade
- Eutrophic
- #3 of 6 in the county
- Public access
Gsl Farmington Bay Outflow Lake in Davis County, Utah has a water quality grade of D (Nutrient-rich). Water clarity: 1 ft visibility. Phosphorus: 484.5 µg/L. Chlorophyll-a (algae): 27.8 µg/L.
- Clarity
- 1 ft
- Type
- Eutrophic
- Phosphorus
- 484.5 µg/L
- Chlorophyll-a
- 27.8 µg/L
- Trend
- → Stable
- Public access
- Yes
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Stays near Gsl Farmington Bay Outflow Lake
Compare lakeside cabins, hotels, and vacation rentals near Gsl Farmington Bay Outflow 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 grade measures nutrients and algae, not lodging — cabins and rentals around Gsl Farmington Bay Outflow Lake are listed below.
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Gsl Farmington Bay Outflow Lake is a productive, nutrient-rich eutrophic lake in Davis County, Utah. Water quality is graded D based on 2 sampling years through 2023. Phosphorus level is declining over recent sampling years. Limited fish-species data available. Public access is available. Compared to the 5 other monitored lakes in Davis County, Gsl Farmington Bay Outflow Lake ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, Utah DWQ, last sampled 2023-07-12. Grade methodology: LakeQuality methodology.
Swimming Safety
Grade onlyAlgae risk
Based on clarity and algae grades from past sampling — we do not hold a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Water 60°F now
The D is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: D (Nutrient-rich)
Very murky, less than 1 ft of visibility. Phosphorus 484.5 µg/L. Chlorophyll-a 27.8 µg/L. TSI 78. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1 ft | Not graded |
| Phosphorus | 484.5 µg/L | Poor |
| Chlorophyll-a (Algae) | 27.8 µg/L | Poor |
| Trophic State Index (TSI) | 78 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Current Conditions
USGS snapshot Sep 7, 2026, 3:45 PM from gauge 410401112134801 (GSL FARMINGTON BAY OUTFLOW AT CAUSEWAY BRIDGE). Station page ↗ — a live reading replaces this snapshot when the gauge responds. Missing live data is not an all-clear.
→ Gsl Farmington Bay Outflow Lake water level: the live USGS gauge reading
Fishing Gsl Farmington Bay Outflow Lake
Water Quality Trend: → Stable
Based on 12 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | ↓ Declining | +13.74 µg/L/yr | 12 |
| Chlorophyll-a | ↑ Improving | -1.1 µg/L/yr | 11 |
County Ranking
Ranked #3 of 6 lakes in Davis County
Nearby Lakes in Davis County
Frequently asked questions about Gsl Farmington Bay Outflow Lake
Where is Gsl Farmington Bay Outflow Lake?
- Gsl Farmington Bay Outflow Lake is a lake in Davis County, Utah. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Gsl Farmington Bay Outflow Lake?
- Gsl Farmington Bay Outflow Lake in Davis County, Utah has a water quality grade of D (Nutrient-rich). Water clarity: 1 ft visibility. Phosphorus: 484.5 µg/L. Chlorophyll-a (algae): 27.8 µg/L.
Is Gsl Farmington Bay Outflow Lake safe to swim in?
- The D is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
What is the water level at Gsl Farmington Bay Outflow Lake?
- The USGS snapshot on this page for Gsl Farmington Bay Outflow Lake is 2.41 ft of gage height, recorded Sep 7, 2026, 3:45 PM at gauge 410401112134801. Current Conditions hydrates a live NWIS reading from that same station when the gauge responds. A missed live fetch is not an all-clear.
Explore Gsl Farmington Bay Outflow Lake across LakeQuality
3 thermal springs within 22.2 mi, nearest Hooper Hot Springs
Species activity outlook by water temperature and season
Where to stay at Utah's top lakes, each with its grade
High nutrients, frequent algae, reduced clarity
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Where this data comes from
148 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-UT148 samples · 2012–2023
Analytical methods
- Nutrients, wu, WCA,persulfate,CF
- Nutrients, brines, colorimetry
- P, wu, WCA, persulfate CF color
- P, brine,u, acid-persulf CFcolor
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.