Lyman Lake
Summit County, UtahView mapDirections
Utah DWQ publishes the water-quality measurements for Lyman Lake. Here is what has been measured.
- Oligotrophic
- Impaired · Oxygen depletion (low DO)
- 27 ft max depth
- Limited data
Lyman Lake in Summit County, Utah has water-quality measurements published by Utah DWQ, shown here as reported. Water clarity: 19.7 ft visibility. Phosphorus: 10.3 µg/L. Chlorophyll-a (algae): 2.1 µg/L.
Lyman Lake is a cold, clear oligotrophic lake in Summit County, Utah with an estimated average depth of about 27 feet. Overall water quality is declining over recent sampling years. Compared to the 17 other monitored lakes in Summit County, Lyman Lake ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, Utah DWQ, last sampled 2023-09-25. Methodology: how these readings are compared.
If you are planning to stay, you can search lake houses and cabins around Lyman Lake on Vrbo, or look for a hotel room near the lake on Booking.com or Expedia.
What Lyman Lake is good for
From access and monitoring records, not editorial picks.
- Clear water19.7 ft of visibility
- Camping1 public campground nearby
Swimming conditions
Readings onlyLimited data
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. Lyman Lake is listed impaired under Clean Water Act §303(d) (IR 5) for oxygen depletion (low DO). Check local advisories before you swim.
Whether Lyman 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 Lyman Lake
These are the measurements Utah DWQ publishes for Lyman Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Crystal clear, you can see 19.7 ft down. Phosphorus 10.3 µg/L. Chlorophyll-a 2.1 µg/L. TSI 37.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 19.7ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 10.3µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 2.1µg/L | Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water. |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 37 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Lyman Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~27 ft est.
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Utah has not published bathymetry for Lyman Lake.
Lake Size & Watershed
Watershed (drainage) area
1 sq mi
HydroLAKES / HydroSHEDS
Surface area
54 acres
HydroLAKES / HydroSHEDS
Shoreline
1.4 mi
HydroLAKES / HydroSHEDS
Elevation
9,314 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Recreation & Access
Public campgrounds near Lyman Lake
- Little Lyman Lake0.3 km
Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes
Stays via Stay22
Stays near Lyman Lake
Compare lakeside cabins, hotels, and vacation rentals near Lyman Lake in Summit 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.
Top-rated places to stay near Lyman Lake
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Fishing Lyman Lake
Water quality readings over time
2 seasons of samples on record (2017–2023). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Worsening2 years
EPA Impairment Status
Lyman Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life.
Source: EPA ATTAINS assessment unit UT-L-14040107-005_00 · Official waterbody report
Nearby Lakes in Summit County
Frequently asked questions about Lyman Lake
Where is Lyman Lake?
- Lyman Lake is a lake in Summit County, Utah. Its water-quality measurements are published by Utah DWQ and shown on this page as reported.
What is the water quality of Lyman Lake?
- Lyman Lake in Summit County, Utah has water-quality measurements published by Utah DWQ, shown here as reported. Water clarity: 19.7 ft visibility. Phosphorus: 10.3 µg/L. Chlorophyll-a (algae): 2.1 µg/L.
Is Lyman Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Lyman Lake is listed impaired under Clean Water Act §303(d) (IR 5) for oxygen depletion (low DO). Check local advisories before you swim.
How deep is Lyman Lake?
- No published bathymetric survey covers Lyman Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 27 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Are there campgrounds on Lyman Lake?
- Lyman Lake has 1 public campground from USGS The National Map within 5 km, including Little Lyman Lake. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.
Explore Lyman Lake across LakeQuality
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Other Lakes in Utah
Oligotrophic Lakes in Utah
Where this data comes from
18 measurements from 1 monitoring station, 2017–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Utah Department Of Environmental Quality
UTAHDWQ_WQX18 samples · 2017–2023
Analytical methods
- Field Measurements
- Phosphorus by Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
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.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Lake size & watershed from HydroLAKES (HydroSHEDS)
Public campgrounds from USGS The National Map Structures, within about 3 miles