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

Is Tihu Järv safe to swim in?

Tihu 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 Tihu Järv?

Tihu Järv has a maximum depth of 0.7 feet. The lake covers 120.1 acres.

Tihu Järv

Hiiu, Estonia49 haView map Directions

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

Clarity

0.1 m

Murkier than most

Secchi · sampled 2024

Phosphorus

67 µg/L

More phosphorus than most

Measured by KAUR

Chlorophyll-a

4.8 µg/L

Typical for Estonia

Measured by KAUR

Max depth

0.2 m

Bathymetric survey

Area

49 ha

Surface area

1 ft max depth
Limited data

See the measurements Directions Where to stay

Tihu Järv in Hiiu, Estonia has official water-quality measurements, shown as reported. Water clarity: 0.1 m visibility. Phosphorus: 67 µg/L. Chlorophyll-a (algae): 4.8 µg/L. Maximum depth: 0.7 ft. Surface area: 120.1 acres.

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How Tihu Järv is classified

Tihu 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).

Tihu Järv is a 120-acre lake in Hiiu County, Estonia with a maximum depth of 1 feet.

Source: the Estonian Environment Agency (Keskkonnaagentuur) — not the EPA Water Quality Portal, last sampled 2024-09-17. 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 Tihu 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 Tihu Järv

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

Very murky, less than 0.2 ft of visibility. Phosphorus 67 µg/L. Chlorophyll-a 4.8 µg/L. TSI 70.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	0.07m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	67µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	4.8µg/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.	70	Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic

Very high nutrients, dense algae, poor clarity

Ask about Tihu Järv

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

Lake Details

Max depth

0.2 m

Surface area

49 ha

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Fishing Tihu Järv

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

Frequently asked questions about Tihu Järv

Where is Tihu Järv?: Tihu Järv is a lake in Hiiu, Estonia. This page reports official water-quality measurements, shown as reported.
What is the water quality of Tihu Järv?: Tihu Järv in Hiiu, Estonia has official water-quality measurements, shown as reported. Water clarity: 0.1 m visibility. Phosphorus: 67 µg/L. Chlorophyll-a (algae): 4.8 µg/L. Maximum depth: 0.7 ft. Surface area: 120.1 acres.
Is Tihu Järv safe to swim in?: Tihu 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 Tihu Järv?: Tihu Järv has a maximum depth of 0.7 feet. The lake covers 120.1 acres.

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Where this data comes from

20 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-ee20 samples · 2018–2024

Analytical methods

KESE I-level monitoring

Monitoring station identifiers (2)

SJA1446003
SJA1446000

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