Lower New Fork Lake
Sublette County, WyomingView mapDirections
Wyoming DEQ publishes the water-quality measurements for Lower New Fork Lake. Here is what has been measured.
- Oligotrophic
- Public access
- Limited data
Lower New Fork Lake in Sublette County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Water clarity: 22 ft visibility. Phosphorus: 10 µg/L.
Lower New Fork Lake is a cold, clear oligotrophic lake in Sublette County, Wyoming. Limited fish-species data available. Public access is available. Compared to the 7 other monitored lakes in Sublette County, Lower New Fork Lake ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2019-09-09. Methodology: how these readings are compared.
What Lower New Fork Lake is good for
From access and monitoring records, not editorial picks.
- Clear water22 ft of visibility
- Camping5 public campgrounds 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. Check local advisories before you swim.
Whether Lower New Fork Lake is safe to swim in today is a call for the Wyoming Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lower New Fork Lake
These are the measurements Wyoming DEQ publishes for Lower New Fork 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 22 ft down. Phosphorus 10 µg/L. TSI 35.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 22ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 10µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | No reading 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. | 35 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Lower New Fork Lake
Answers come straight from the public measurements and survey records on this page.
Recreation & Access
Public campgrounds near Lower New Fork Lake
- Narrows Campground1.2 kmReserve
- The Narrows Campground1.3 km
- New Fork Lake Group Campground1.8 kmReserve
- New Fork Lake Campground2.1 km
- New Fork Group Campground2.2 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
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Stays near Lower New Fork Lake
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Fishing Lower New Fork Lake
Nearby Lakes in Sublette County
Frequently asked questions about Lower New Fork Lake
Where is Lower New Fork Lake?
- Lower New Fork Lake is a lake in Sublette County, Wyoming. Its water-quality measurements are published by Wyoming DEQ and shown on this page as reported.
What is the water quality of Lower New Fork Lake?
- Lower New Fork Lake in Sublette County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Water clarity: 22 ft visibility. Phosphorus: 10 µg/L.
Is Lower New Fork Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Can I fish at Lower New Fork Lake?
- Public access to Lower New Fork Lake is listed as yes on the lake record. Seasons, size and bag limits, and whether you need a license are set by Wyoming's fish and wildlife agency, so check its current regulations before you go.
Are there campgrounds on Lower New Fork Lake?
- Lower New Fork Lake has 5 public campgrounds from USGS The National Map within 5 km, including Narrows Campground, The Narrows Campground, New Fork Lake Group Campground, New Fork Lake Campground. 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.
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Where this data comes from
12 measurements from 2 monitoring stations, 2019. 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_WATERSHED12 samples · 2019
Analytical methods
- Secchi
- Total Phosphorus After Block Digestion
Monitoring station identifiers (2)
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
Public campgrounds from USGS The National Map Structures, within about 3 miles