佐久間ダム貯水池
佐久間ダム貯水池 in Shizuoka, Japan has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1.7 m visibility. Phosphorus: 34 µg/L.
- Clarity
- 1.7 m
Why 佐久間ダム貯水池 has no A–F grade
佐久間ダム貯水池 in Japan is published with the authority's own measurements, not a LakeQuality letter. official authority class; not a LakeQuality A–F letter Sampling here has recorded water clarity and phosphorus, but not algae (chlorophyll-a).
A letter on the LakeQuality scale would be an invention, not an official class. Everything below that has been measured is still reported on this page.
Monitoring: the Ministry of the Environment (Japan).
佐久間ダム貯水池 is a lake in Shizuoka County, Japan.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2025-03-15. Grade methodology: LakeGrade methodology.
Watch 佐久間ダム貯水池 water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for 佐久間ダム貯水池
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Murky, only visible to about 5.4 ft. Phosphorus level: 34 µg/L. Trophic State Index: 54.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.65 m | Not graded |
| Phosphorus | 34 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 54 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near 佐久間ダム貯水池
Compare lakeside cabins, hotels, and vacation rentals near 佐久間ダム貯水池 in Shizuoka, 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 佐久間ダム貯水池
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Fishing 佐久間ダム貯水池
Frequently asked questions about 佐久間ダム貯水池
What is the water quality of 佐久間ダム貯水池?
- 佐久間ダム貯水池 in Shizuoka, Japan has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1.7 m visibility. Phosphorus: 34 µg/L.
Is 佐久間ダム貯水池 safe to swim in?
- 佐久間ダム貯水池 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 佐久間ダム貯水池 across LakeGrade
More lakes in Japan
Where this data comes from
44 measurements from 1 monitoring station, 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-jp44 samples · 2016–2025
Analytical methods
- MOE public water body monitoring (kosui, lakes)
Monitoring station identifiers (1)
2220080
Authority classifications are stored separately from LakeQuality A–F letters and are never blended. See methodology and data sources.
Data Sources
Water quality data from the EPA Water Quality Portal
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2025-03-15
Monitoring stations: 1