Brooks Lake
Fremont County, WyomingView mapDirections
Nutrients and algae run above the regional average.
↓ down from C at the last regrade
- Eutrophic
- Impaired · Nutrients (phosphorus, nitrogen)
- #14 of 18 in the county
Brooks Lake in Fremont County, Wyoming has a water quality grade of D (Nutrient-rich). Water clarity: 6.3 ft visibility. Phosphorus: 50 µg/L.
- Clarity
- 6.3 ft
- Type
- Eutrophic
- Phosphorus
- 50 µg/L
- Trend
- ↓ Declining
Stays via Stay22
Stays near Brooks Lake
Compare lakeside cabins, hotels, and vacation rentals near Brooks Lake in Fremont County, Wyoming — 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 Brooks Lake are listed below.
Top-rated places to stay near Brooks Lake
Prices for Sep 11–13, 4 adults. Change dates on the map below.
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Watch Brooks Lake’s letter
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Brooks Lake is a productive, nutrient-rich eutrophic lake in Fremont County, Wyoming. Water quality is graded D based on 1 sampling years through 2021. Overall water quality is declining over recent sampling years. Compared to the 17 other monitored lakes in Fremont County, Brooks Lake ranks #14 for water quality.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2021-10-20. Grade methodology: LakeQuality methodology.
What Brooks Lake is good for
From access and monitoring records, not editorial picks.
- Camping1 public campground nearby
Swimming Safety
Grade onlyElevated nutrients
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
The D is nutrients and algae, not a swimming clearance. Brooks Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen), pH / acidity. Check local advisories before you swim.
Water Quality Grade: D (Nutrient-rich)
Murky, only visible to about 6.3 ft. Phosphorus 50 µg/L. TSI 56. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.3 ft | Not graded |
| Phosphorus | 50 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 56 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Recreation & Access
Public campgrounds near Brooks Lake
- Pinnacles0.2 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
Fishing Brooks Lake
Water Quality Trend: ↓ Declining
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.07 m/yr | 2 |
| Phosphorus | → Stable | -0.55 µg/L/yr | 3 |
EPA Impairment Status
Brooks Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit WYBH100800010104_01 · Official waterbody report
County Ranking
Ranked #14 of 18 lakes in Fremont County
Nearby Lakes in Fremont County
Frequently asked questions about Brooks Lake
Where is Brooks Lake?
- Brooks Lake is a lake in Fremont County, Wyoming. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Brooks Lake?
- Brooks Lake in Fremont County, Wyoming has a water quality grade of D (Nutrient-rich). Water clarity: 6.3 ft visibility. Phosphorus: 50 µg/L.
Is Brooks Lake safe to swim in?
- The D is nutrients and algae, not a swimming clearance. Brooks Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen), pH / acidity. Check local advisories before you swim.
Are there campgrounds on Brooks Lake?
- Brooks Lake has 1 public campground from USGS The National Map within 5 km, including Pinnacles. 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 Brooks Lake across LakeQuality
2 thermal springs within 23 mi, nearest Geyser (Warm Spring Creek Springs)
Species activity outlook by water temperature and season
Where to stay at Wyoming's top lakes, each with its grade
High nutrients, frequent algae, reduced clarity
Wyoming's cleanest and most-polluted lakes, ranked
Planning a trip around Grand Teton?
Brooks Lake is about 36 miles from Grand Teton National Park. Crowds there swing hard by season, so the month you pick changes both how busy the park is and what lodging costs.
Best time to visit Grand Teton →More Wyoming Lake Rankings
Other Grade D Lakes in Wyoming
Eutrophic Lakes in Wyoming
Where this data comes from
28 measurements from 1 monitoring station, 2012–2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- State of Wyoming Department of Environmental Quality Watershed Program
WYDEQ_WATERSHED28 samples · 2012–2021
Analytical methods
- Secchi
- Total Phosphorus After Block Digestion
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.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Public campgrounds from USGS The National Map Structures, within about 3 miles