Martiska Järv
Martiska Järv in Ida-Viru, Estonia has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 3 m visibility. Phosphorus: 23 µg/L. Chlorophyll-a (algae): 12 µg/L. Maximum depth: 23.6 ft. Surface area: 7.4 acres.
- Clarity
- 3 m
- Max depth
- 7.2 m
- Area
- 3 ha
Why Martiska Järv has no A–F grade
Martiska Järv 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).
Martiska Järv is a 7-acre lake in Ida-Viru County, Estonia with a maximum depth of 24 feet.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2025-09-22. Grade methodology: LakeGrade methodology.
Watch Martiska Järv water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Martiska Järv
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Moderate clarity, visible to about 9.7 ft. Phosphorus level: 23 µg/L. Chlorophyll-a: 12 µg/L. Trophic State Index: 50.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.95 m | Not graded |
| Phosphorus | 23 µg/L | Not graded |
| Chlorophyll-a (Algae) | 12 µg/L | Not graded |
| Trophic State Index (TSI) | 50 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 7.2 m |
| Surface Area | 3 ha |
Where to stay near Martiska Järv
Compare lakeside cabins, hotels, and vacation rentals near Martiska Järv in Ida-Viru, 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.
Top-rated places to stay near Martiska Järv
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Fishing Martiska Järv
Frequently asked questions about Martiska Järv
What is the water quality of Martiska Järv?
- Martiska Järv in Ida-Viru, Estonia has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 3 m visibility. Phosphorus: 23 µg/L. Chlorophyll-a (algae): 12 µg/L. Maximum depth: 23.6 ft. Surface area: 7.4 acres.
Is Martiska Järv safe to swim in?
- Martiska Järv 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.
How deep is Martiska Järv?
- Martiska Järv has a maximum depth of 23.6 feet. The lake covers 7.4 acres.
Explore Martiska Järv across LakeGrade
More lakes in Estonia
Where this data comes from
28 measurements from 1 monitoring station, 2025. 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-ee28 samples · 2025
Analytical methods
- KESE I-level monitoring
Monitoring station identifiers (1)
SJA4177000
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: 2025-09-22
Monitoring stations: 1