Teton Reservoir
Carbon County, Wyoming106 acresView mapDirections
Not enough samples to grade — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). No letter yet. Here is what we do have.
- 13 ft max depth
- Public access
- Limited data
Teton Reservoir in Carbon County, Wyoming is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 50 µg/L. Surface area: 105.9 acres.
- Max depth
- ~13 ft est.
- Area
- 106 acres
- Phosphorus
- 50 µg/L
- Trend
- ↓ Declining
- Public access
- Yes
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Watch Teton Reservoir’s letter
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Why Teton Reservoir has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Teton Reservoir, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded phosphorus, but not water clarity and algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by Wyoming DEQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Teton Reservoir is a 106-acre lake in Carbon County, Wyoming with an estimated average depth of about 13 feet. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2014-09-08. Grade methodology: LakeQuality methodology.
What Teton Reservoir is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
- Camping1 public campground nearby
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Teton Reservoir
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Phosphorus 50 µg/L. TSI 61.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 50 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 61 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~13 ft est. |
| Average Depth | ~12 ft est. |
| Surface Area | 106 acres |
| Public Access | Yes |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Wyoming has not published bathymetry for Teton Reservoir.
Lake Size & Watershed
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
- Teton ReservoirPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Public campgrounds near Teton Reservoir
- Teton Reservoir Campground0.3 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
Fishing Teton Reservoir
Water Quality Trend: ↓ Declining
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | ↓ Declining | +90 µg/L/yr | 2 |
Reservoir Info (USACE NID)
Teton Reservoir is a man-made reservoir impounded by the Teton Reservoir (completed 1966), built primarily for recreation on the Little Sage Creek; gravity-type dam, 33 ft tall and 1,147 ft long.
- Surface area
- 105.9 ac
- Normal storage
- 1.17 ac-ft
- Max storage
- 266.9 ac-ft
- Hazard class
- High
- Owner
- DOI BLM
Source: USACE National Inventory of Dams, NID ID WY01478 · Operator website
Graded lakes near Teton Reservoir
Teton Reservoir has no grade, but these lakes within a short drive do.
Nearby Lakes in Carbon County
Frequently asked questions about Teton Reservoir
Where is Teton Reservoir?
- Teton Reservoir is a lake in Carbon County, Wyoming. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Teton Reservoir?
- Teton Reservoir in Carbon County, Wyoming is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 50 µg/L. Surface area: 105.9 acres.
Is Teton Reservoir safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
How deep is Teton Reservoir?
- No published bathymetric survey covers Teton Reservoir, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 13 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 105.9 acres.
Are there boat ramps on Teton Reservoir?
- Teton Reservoir has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Teton Reservoir. Public access is listed as yes.
Are there campgrounds on Teton Reservoir?
- Teton Reservoir has 1 public campground from USGS The National Map within 5 km, including Teton Reservoir 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
6 measurements from 1 monitoring station, 2013–2014. 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_WATERSHED6 samples · 2013–2014
Analytical methods
- 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
Lake size & watershed from HydroLAKES (HydroSHEDS)
Named boat-access points from the USGS National Boat Ramps inventory
Public campgrounds from USGS The National Map Structures, within about 3 miles