Lake Mirandy
Sharp County, Arkansas61 acresView mapDirections
Clarity, phosphorus, and algae all sit in the cleanest band for this region.
↑ up from B at the last regrade
- Mesotrophic
- #1 of 1 in the county
- 42 ft max depth
- Limited data
Lake Mirandy in Sharp County, Arkansas has a water quality grade of A (Excellent). Phosphorus: 34 µg/L. Chlorophyll-a (algae): 2 µg/L. Surface area: 61 acres.
- Max depth
- ~42 ft est.
- Area
- 61 acres
- Type
- Mesotrophic
- Phosphorus
- 34 µg/L
- Chlorophyll-a
- 2 µg/L
- Trend
- ↓ Declining
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Watch Lake Mirandy’s letter
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Lake Mirandy is a 61-acre mesotrophic lake in Sharp County, Arkansas with an estimated average depth of about 42 feet. Water quality is graded A based on 2 sampling years through 2025. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, ADEQ, last sampled 2025-11-03. 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 A is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: A (Excellent)
No clarity data. Phosphorus 34 µg/L. Chlorophyll-a 2 µg/L. TSI 46. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 34 µg/L | Not graded |
| Chlorophyll-a (Algae) | 2 µg/L | Good |
| Trophic State Index (TSI) | 46 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~42 ft est. |
| Average Depth | ~12 ft est. |
| Surface Area | 61 acres |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Arkansas has not published bathymetry for Lake Mirandy.
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 Mirandy
Water Quality Trend: ↓ Declining
Based on 4 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | ↓ Declining | +1.09 µg/L/yr | 2 |
| Chlorophyll-a | ↓ Declining | +0.21 µg/L/yr | 4 |
Reservoir Info (USACE NID)
Lake Mirandy is a man-made reservoir impounded by the Lake Mirandy Dam (completed 1958), built primarily for recreation on the Little Otter Creek-Spring Riv; earth-type dam, 39 ft tall and 691 ft long.
- Surface area
- 61 ac
- Normal storage
- 500 ac-ft
- Max storage
- 1,000 ac-ft
- Drainage area
- 1 sq mi
- Hazard class
- High
- Owner
- City of Highland
Source: USACE National Inventory of Dams, NID ID AR00252 · Operator website
County Ranking
Ranked #1 of 1 lakes in Sharp County
Nearby Lakes in Sharp County
Frequently asked questions about Lake Mirandy
Where is Lake Mirandy?
- Lake Mirandy is a lake in Sharp County, Arkansas. LakeQuality grades it A for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lake Mirandy?
- Lake Mirandy in Sharp County, Arkansas has a water quality grade of A (Excellent). Phosphorus: 34 µg/L. Chlorophyll-a (algae): 2 µg/L. Surface area: 61 acres.
Is Lake Mirandy safe to swim in?
- The A is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
How deep is Lake Mirandy?
- No published bathymetric survey covers Lake Mirandy, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 42 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 61 acres.
Explore Lake Mirandy across LakeQuality
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Other Grade A Lakes in Arkansas
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Where this data comes from
33 measurements from 1 monitoring station, 2012–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Arkansas Department of Environmental Quality
ARDEQH2O_WQX33 samples · 2012–2025
Analytical methods
- 4500 P J ~ Persulfate Method for Simultaneous Determination of Total Nitrogen and Total Phosphorus
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
- Turbidity by Nephelometry
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)