Lake Lee
Union County, North Carolina122 acresView mapDirections
Nutrients and algae run well above the regional average.
- Hypereutrophic
- #1 of 3 in the county
- 35 ft max depth
- Limited data
Lake Lee in Union County, North Carolina has a water quality grade of F (Algae-prone). Phosphorus: 210 µg/L. Chlorophyll-a (algae): 90.5 µg/L. Surface area: 122 acres.
- Max depth
- ~35 ft est.
- Area
- 122 acres
- Type
- Hypereutrophic
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Stays near Lake Lee
Compare lakeside cabins, hotels, and vacation rentals near Lake Lee in Union County, North Carolina — 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 Lake Lee are listed below.
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Lake Lee is a 122-acre highly nutrient-loaded hypereutrophic lake in Union County, North Carolina with an estimated average depth of about 35 feet. Water quality is graded F based on 2 sampling years through 2021. Compared to the 2 other monitored lakes in Union County, Lake Lee ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, NCDEQ, last sampled 2021-09-29. Grade methodology: LakeQuality methodology.
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 F is nutrients and algae, not a swimming clearance. Lake Lee is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, oxygen depletion (low DO), temperature. Check local advisories before you swim.
Water Quality Grade: F (Algae-prone)
No clarity data. Phosphorus 210 µg/L. Chlorophyll-a 90.5 µg/L. TSI 78. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 210 µg/L | Poor |
| Chlorophyll-a (Algae) | 90.5 µg/L | Poor |
| Trophic State Index (TSI) | 78 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~35 ft est. |
| Average Depth | ~10 ft est. |
| Surface Area | 122 acres |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. North Carolina has not published bathymetry for Lake Lee.
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.
Fishing Lake Lee
Reservoir Info (USACE NID)
Lake Lee is a man-made reservoir impounded by the Lake Lee Dam (completed 1925), built primarily for other on the Richardson Creek; concrete-type dam, 39 ft tall and 450 ft long.
- Surface area
- 122 ac
- Normal storage
- 1,507 ac-ft
- Max storage
- 2,465 ac-ft
- Drainage area
- 51.42 sq mi
- Hazard class
- High
- Owner
- City of Monroe
All listed purposes: Other;Water Supply.
Source: USACE National Inventory of Dams, NID ID NC00536 · Operator website
EPA Impairment Status
Lake Lee is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit NC13-17-36-(3.5)b3 · Official waterbody report · Matched by proximity (0.52 km)
County Ranking
Ranked #1 of 3 lakes in Union County
Nearby Lakes in Union County
Frequently asked questions about Lake Lee
Where is Lake Lee?
- Lake Lee is a lake in Union County, North Carolina. LakeQuality grades it F for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lake Lee?
- Lake Lee in Union County, North Carolina has a water quality grade of F (Algae-prone). Phosphorus: 210 µg/L. Chlorophyll-a (algae): 90.5 µg/L. Surface area: 122 acres.
Is Lake Lee safe to swim in?
- The F is nutrients and algae, not a swimming clearance. Lake Lee is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, oxygen depletion (low DO), temperature. Check local advisories before you swim.
How deep is Lake Lee?
- No published bathymetric survey covers Lake Lee, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 35 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 122 acres.
Explore Lake Lee across LakeQuality
Species activity outlook by water temperature and season
Where to stay at North Carolina's top lakes, each with its grade
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Where this data comes from
45 measurements from 3 monitoring stations, 2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- North Carolina Dept of Environmental Quality NCDEQ-DWR WQX
21NC03WQ45 samples · 2021
Analytical methods
- Phosphorus by Colorimetry
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
- 2130 B ~ Nephelometric Method
Monitoring station identifiers (3)
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
Lake size & watershed from HydroLAKES (HydroSHEDS)