Worthen Meadows Reservoir
Fremont County, Wyoming92 acresView mapDirections
Clarity, phosphorus, and algae sit in the clean band for this region.
↓ down from A at the last regrade
- Oligotrophic
- #10 of 18 in the county
- Public access
- Limited data
Worthen Meadows Reservoir in Fremont County, Wyoming has a water quality grade of B (Good). Water clarity: 15.9 ft visibility. Phosphorus: 10 µg/L. Surface area: 92 acres.
- Clarity
- 15.9 ft
- Area
- 92 acres
- Type
- Oligotrophic
- Phosphorus
- 10 µg/L
- Public access
- Yes
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Watch Worthen Meadows Reservoir’s letter
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Worthen Meadows Reservoir is a 92-acre cold, clear oligotrophic lake in Fremont County, Wyoming. Water quality is graded B based on 1 sampling years through 2021. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 17 other monitored lakes in Fremont County, Worthen Meadows Reservoir ranks #10 for water quality.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2021-09-08. Grade methodology: LakeQuality methodology.
What Worthen Meadows Reservoir is good for
From access and monitoring records, not editorial picks.
- Clear water15.9 ft of visibility
- Boat launch1 documented ramp
- Camping1 public campground nearby
Swimming Safety
Grade onlyLimited data
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 B is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: B (Good)
Crystal clear, you can see 15.9 ft down. Phosphorus 10 µg/L. TSI 37. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 15.9 ft | Not graded |
| Phosphorus | 10 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 37 | Oligotrophic |
Low nutrients, clear water. The letter is not a swimming clearance.
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 92 acres |
| Public Access | Yes |
The available depth estimate for Worthen Meadows Reservoir is shallower than its measured water clarity, which cannot be right, so no depth is shown.
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Worthen Meadows ReservoirPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Public campgrounds near Worthen Meadows Reservoir
- Worthen Meadows0.9 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 Worthen Meadows Reservoir
Reservoir Info (USACE NID)
Worthen Meadows Reservoir is a man-made reservoir impounded by the Enlargement of Worthen Meadows (completed 1958), built primarily for water supply on the Roaring Fork Creek; earth-type dam, 46 ft tall and 850 ft long.
- Surface area
- 92 ac
- Normal storage
- 1,504 ac-ft
- Max storage
- 2,516 ac-ft
- Drainage area
- 12.7 sq mi
- Hazard class
- High
- Owner
- CITY OF LANDER
All listed purposes: Water Supply;Irrigation.
Source: USACE National Inventory of Dams, NID ID WY01058 · Operator website · Matched by proximity (0.13 km)
County Ranking
Ranked #10 of 18 lakes in Fremont County
Nearby Lakes in Fremont County
Frequently asked questions about Worthen Meadows Reservoir
Where is Worthen Meadows Reservoir?
- Worthen Meadows Reservoir is a lake in Fremont County, Wyoming. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Worthen Meadows Reservoir?
- Worthen Meadows Reservoir in Fremont County, Wyoming has a water quality grade of B (Good). Water clarity: 15.9 ft visibility. Phosphorus: 10 µg/L. Surface area: 92 acres.
Is Worthen Meadows Reservoir safe to swim in?
- The B is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
How deep is Worthen Meadows Reservoir?
- The available depth estimate for Worthen Meadows Reservoir is shallower than its measured water clarity, which cannot be right, so no depth is shown. The lake covers 92 acres.
Are there boat ramps on Worthen Meadows Reservoir?
- Worthen Meadows Reservoir has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Worthen Meadows Reservoir. Public access is listed as yes.
Are there campgrounds on Worthen Meadows Reservoir?
- Worthen Meadows Reservoir has 1 public campground from USGS The National Map within 5 km, including Worthen Meadows. 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 Worthen Meadows Reservoir across LakeQuality
Species activity outlook by water temperature and season
Where to stay at Wyoming's top lakes, each with its grade
Low nutrients, clear water. The letter is not a swimming clearance.
Wyoming's cleanest and most-polluted lakes, ranked
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Other Grade B Lakes in Wyoming
Oligotrophic Lakes in Wyoming
Where this data comes from
6 measurements from 1 monitoring station, 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_WATERSHED6 samples · 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
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