Where is Loosalu Järv?

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

Is Loosalu Järv safe to swim in?

Loosalu 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 Loosalu Järv?

Loosalu Järv has a maximum depth of 16.4 feet. The lake covers 87.7 acres.

Loosalu Järv

Rapla, Estonia35 haView map Directions

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

Clarity

1 m

Typical for Estonia

Secchi · sampled 2024

Phosphorus

74.5 µg/L

More phosphorus than most

Measured by KAUR

Chlorophyll-a

8.1 µg/L

Typical for Estonia

Measured by KAUR

Max depth

5 m

Bathymetric survey

Area

35 ha

Surface area

16 ft max depth
Limited data

See the measurements Directions Where to stay

Loosalu Järv in Rapla, Estonia has official water-quality measurements, shown as reported. Water clarity: 1 m visibility. Phosphorus: 74.5 µg/L. Chlorophyll-a (algae): 8.1 µg/L. Maximum depth: 16.4 ft. Surface area: 87.7 acres.

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How Loosalu Järv is classified

Loosalu 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).

Loosalu Järv is a 88-acre lake in Rapla County, Estonia with a maximum depth of 16 feet.

Source: the Estonian Environment Agency (Keskkonnaagentuur) — not the EPA Water Quality Portal, last sampled 2024-09-11. 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 Loosalu 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 Loosalu Järv

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

Very murky, less than 3.1 ft of visibility. Phosphorus 74.5 µg/L. Chlorophyll-a 8.1 µg/L. TSI 59.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	0.95m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	74.5µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	8.1µg/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.	59	Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic

High nutrients, frequent algae, reduced clarity

Ask about Loosalu Järv

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

Lake Details

Max depth

5 m

Surface area

35 ha

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Fishing Loosalu Järv

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

Frequently asked questions about Loosalu Järv

Where is Loosalu Järv?: Loosalu Järv is a lake in Rapla, Estonia. This page reports official water-quality measurements, shown as reported.
What is the water quality of Loosalu Järv?: Loosalu Järv in Rapla, Estonia has official water-quality measurements, shown as reported. Water clarity: 1 m visibility. Phosphorus: 74.5 µg/L. Chlorophyll-a (algae): 8.1 µg/L. Maximum depth: 16.4 ft. Surface area: 87.7 acres.
Is Loosalu Järv safe to swim in?: Loosalu 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 Loosalu Järv?: Loosalu Järv has a maximum depth of 16.4 feet. The lake covers 87.7 acres.

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Where this data comes from

54 measurements from 2 monitoring stations, 2017–2024. 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-ee54 samples · 2017–2024

Analytical methods

KESE I-level monitoring

Monitoring station identifiers (2)

SJA7529003
SJA7529000

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