竜門ダム貯水池
Kumamoto, JapanView mapDirections
MOE publishes the water-quality measurements for 竜門ダム貯水池. Here is what has been measured.
- Limited data
竜門ダム貯水池 in Kumamoto, Japan has official water-quality measurements, shown as reported. Water clarity: 3.4 m visibility. Phosphorus: 11 µg/L.
How 竜門ダム貯水池 is classified
竜門ダム貯水池 in Japan 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 and phosphorus, but not algae (chlorophyll-a).
LakeQuality publishes no grade of its own beside it. Everything below thathas been measured is reported on this page.
Monitoring: the Ministry of the Environment (Japan).
竜門ダム貯水池 is a lake in Kumamoto County, Japan.
Source: the Ministry of the Environment (Japan) — not the EPA Water Quality Portal, last sampled 2025-03-15. Methodology: how these readings are compared.
What 竜門ダム貯水池 is good for
From access and monitoring records, not editorial picks.
- Clear water11.2 ft of visibility
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether 竜門ダム貯水池 is safe to swim in today is a call for the Ministry of the Environment (Japan) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for 竜門ダム貯水池
These are the measurements MOE publishes for 竜門ダム貯水池. More on the source.
Good clarity, visible to about 11.2 ft. Phosphorus 11 µg/L. TSI 41.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3.4m | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 11µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | No reading 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. | 41 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about 竜門ダム貯水池
Answers come straight from the public measurements and survey records on this page.
Stays via Stay22
Stays near 竜門ダム貯水池
Compare lakeside cabins, hotels, and vacation rentals near 竜門ダム貯水池 in Kumamoto, Japan — 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 竜門ダム貯水池
Prices for Oct 2–4, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Follow 竜門ダム貯水池’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing 竜門ダム貯水池
Frequently asked questions about 竜門ダム貯水池
Where is 竜門ダム貯水池?
- 竜門ダム貯水池 is a lake in Kumamoto, Japan. This page reports official water-quality measurements, shown as reported.
What is the water quality of 竜門ダム貯水池?
- 竜門ダム貯水池 in Kumamoto, Japan has official water-quality measurements, shown as reported. Water clarity: 3.4 m visibility. Phosphorus: 11 µg/L.
Is 竜門ダム貯水池 safe to swim in?
- 竜門ダム貯水池 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.
Explore 竜門ダム貯水池 across LakeQuality
More lakes in Japan
Where this data comes from
46 measurements from 2 monitoring stations, 2016–2025. Retrieved from Japan MOE public water-body monitoring (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Ministry of the Environment (Japan)
moe-jp46 samples · 2016–2025
Analytical methods
- MOE public water body monitoring (kosui, lakes)
Monitoring station identifiers (2)
43200304320040
Authority classifications are shown as the authority published them. See where the data comes from and data sources.