Where is Koigi Järv?

Koigi Järv is a lake in Saare, Estonia. This page reports official water-quality measurements, shown as reported.

Is Koigi Järv safe to swim in?

Koigi 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 Koigi Järv?

Koigi Järv has a maximum depth of 3.6 feet. The lake covers 302.2 acres.

Koigi Järv

Saare, Estonia122 haView map Directions

KAUR publishes the water-quality measurements for Koigi Järv. Here is what has been measured.

Clarity

0.3 m

Murkier than most

Secchi · sampled 2024

Phosphorus

36 µg/L

Typical for Estonia

Measured by KAUR

Chlorophyll-a

2.3 µg/L

Less algae than most

Measured by KAUR

Max depth

1.1 m

Bathymetric survey

Area

122 ha

Surface area

4 ft max depth
Limited data

See the measurements Directions Where to stay

Koigi Järv in Saare, Estonia has official water-quality measurements, shown as reported. Water clarity: 0.3 m visibility. Phosphorus: 36 µg/L. Chlorophyll-a (algae): 2.3 µg/L. Maximum depth: 3.6 ft. Surface area: 302.2 acres.

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How Koigi Järv is classified

Koigi Järv in Estonia 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 Estonian Environment Agency (Keskkonnaagentuur).

Koigi Järv is a 302-acre lake in Saare County, Estonia with a maximum depth of 4 feet.

Source: the Estonian Environment Agency (Keskkonnaagentuur) — not the EPA Water Quality Portal, last sampled 2024-09-23. Methodology: how these readings are compared.

Swimming conditions

No reading

Limited data

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether Koigi Järv is safe to swim in today is a call for the Estonian Environment Agency (Keskkonnaagentuur) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Koigi Järv

These are the measurements KAUR publishes for Koigi Järv. More on the source.

Very murky, less than 1 ft of visibility. Phosphorus 36 µg/L. Chlorophyll-a 2.3 µg/L. TSI 57.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	0.3m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	36µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	2.3µg/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.	57	Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic

High nutrients, frequent algae, reduced clarity

Ask about Koigi Järv

Answers come straight from the public measurements and survey records on this page.

Lake Details

Max depth

1.1 m

Surface area

122 ha

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Fishing Koigi Järv

→ Koigi Järv fishing regulations (limits, seasons, special rules)

Frequently asked questions about Koigi Järv

Where is Koigi Järv?: Koigi Järv is a lake in Saare, Estonia. This page reports official water-quality measurements, shown as reported.
What is the water quality of Koigi Järv?: Koigi Järv in Saare, Estonia has official water-quality measurements, shown as reported. Water clarity: 0.3 m visibility. Phosphorus: 36 µg/L. Chlorophyll-a (algae): 2.3 µg/L. Maximum depth: 3.6 ft. Surface area: 302.2 acres.
Is Koigi Järv safe to swim in?: Koigi 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 Koigi Järv?: Koigi Järv has a maximum depth of 3.6 feet. The lake covers 302.2 acres.

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Where this data comes from

24 measurements from 2 monitoring stations, 2018–2024. 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-ee24 samples · 2018–2024

Analytical methods

KESE I-level monitoring

Monitoring station identifiers (2)

SJA3356002
SJA3356000

Authority classifications are shown as the authority published them. See where the data comes from and data sources.