Mõisalaht Lake
Mõisalaht Lake in Pärnu, Estonia has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1 m visibility. Phosphorus: 52.5 µg/L. Chlorophyll-a (algae): 9.8 µg/L. Surface area: 194.5 acres.
- Clarity
- 1 m
- Area
- 79 ha
Why Mõisalaht Lake has no A–F grade
Mõisalaht Lake in Estonia is published with the authority's own measurements, not a LakeQuality letter. official authority class; not a LakeQuality A–F letter Sampling here has recorded water clarity, phosphorus and algae (chlorophyll-a).
A letter on the LakeQuality scale would be an invention, not an official class. Everything below that has been measured is still reported on this page.
Monitoring: the Estonian Environment Agency (Keskkonnaagentuur).
Mõisalaht Lake is a 195-acre lake in Pärnu County, Estonia.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2020-09-27. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Mõisalaht Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Very murky, less than 3.3 ft of visibility. Phosphorus level: 52.5 µg/L. Chlorophyll-a: 9.8 µg/L. Trophic State Index: 58.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1 m | Not graded |
| Phosphorus | 52.5 µg/L | Not graded |
| Chlorophyll-a (Algae) | 9.8 µg/L | Not graded |
| Trophic State Index (TSI) | 58 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 79 ha |
No bathymetric survey has been published for Mõisalaht Lake, so its depth is not documented here.
Where to stay near Mõisalaht Lake
Compare lakeside cabins, hotels, and vacation rentals near Mõisalaht Lake in Pärnu, Estonia — 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.
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Fishing Mõisalaht Lake
Frequently asked questions about Mõisalaht Lake
What is the water quality of Mõisalaht Lake?
- Mõisalaht Lake in Pärnu, Estonia has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1 m visibility. Phosphorus: 52.5 µg/L. Chlorophyll-a (algae): 9.8 µg/L. Surface area: 194.5 acres.
Is Mõisalaht Lake safe to swim in?
- Mõisalaht Lake has official nutrient and clarity measurements, not a bacteria swim class and not a safety clearance. Algal blooms, currents, and depth are not covered. Always check local notices before swimming.
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Where this data comes from
12 measurements from 1 monitoring station, 2020. Retrieved from KESE / Estonian Environment Agency (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Estonian Environment Agency (Keskkonnaagentuur)
kese-ee12 samples · 2020
Analytical methods
- KESE I-level monitoring
Monitoring station identifiers (1)
SJA6326002
Authority classifications are stored separately from LakeQuality A–F letters and are never blended. See methodology and data sources.
Data Sources
Water quality data from the EPA Water Quality Portal
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2020-09-27
Monitoring stations: 1