Išnarai Lake
Utenos, LithuaniaView mapDirections
AAA publishes the water-quality measurements for Išnarai Lake. Here is what has been measured.
- Limited data
Išnarai Lake in Utenos, Lithuania has official water-quality measurements, shown as reported. Water clarity: 1.4 m visibility. Phosphorus: 20 µg/L. Chlorophyll-a (algae): 5.6 µg/L.
How Išnarai Lake is classified
Išnarai Lake in Lithuania is published with the authority's own measurements and class. The measurements here are published by the agency that samples the lake, as reported. Sampling here has recorded water clarity, phosphorus and algae (chlorophyll-a).
LakeQuality publishes no grade of its own beside it. Everything below thathas been measured is reported on this page.
Monitoring: the Environmental Protection Agency of Lithuania (Aplinkos apsaugos agentūra).
Išnarai Lake is a lake in Utenos County, Lithuania.
Source: the Environmental Protection Agency of Lithuania (Aplinkos apsaugos agentūra) — not the EPA Water Quality Portal, last sampled 2020-10-01. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Išnarai Lake is safe to swim in today is a call for the Environmental Protection Agency of Lithuania (Aplinkos apsaugos agentūra) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Išnarai Lake
These are the measurements AAA publishes for Išnarai Lake. More on the source.
Murky, only visible to about 4.6 ft. Phosphorus 20 µg/L. Chlorophyll-a 5.6 µg/L. TSI 50.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 1.4m | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 20µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 5.6µg/L | Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water. |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 50 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
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Frequently asked questions about Išnarai Lake
Where is Išnarai Lake?
- Išnarai Lake is a lake in Utenos, Lithuania. This page reports official water-quality measurements, shown as reported.
What is the water quality of Išnarai Lake?
- Išnarai Lake in Utenos, Lithuania has official water-quality measurements, shown as reported. Water clarity: 1.4 m visibility. Phosphorus: 20 µg/L. Chlorophyll-a (algae): 5.6 µg/L.
Is Išnarai Lake safe to swim in?
- Išnarai 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
11 measurements from 1 monitoring station, 2020. Retrieved from Lithuanian lake state monitoring (AAA; not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Environmental Protection Agency of Lithuania (Aplinkos apsaugos agentūra)
aaa-lt11 samples · 2020
Analytical methods
- AAA lake state monitoring
Monitoring station identifiers (1)
LTL344
Authority classifications are shown as the authority published them. See where the data comes from and data sources.