Ching-Mien Reservoir
Ching-Mien Reservoir in Tainan, Taiwan has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 0.4 m visibility. Phosphorus: 30 µg/L. Chlorophyll-a (algae): 36 µg/L.
- Clarity
- 0.4 m
Why Ching-Mien Reservoir has no A–F grade
Ching-Mien Reservoir in Taiwan 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, phosphorus and 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 Environment (Taiwan).
Ching-Mien Reservoir is a lake in Tainan County, Taiwan.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2020-07-07. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Ching-Mien Reservoir
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Very murky, less than 1.3 ft of visibility. Phosphorus level: 30 µg/L. Chlorophyll-a: 36 µg/L. Trophic State Index: 64.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.4 m | Not graded |
| Phosphorus | 30 µg/L | Not graded |
| Chlorophyll-a (Algae) | 36 µg/L | Not graded |
| Trophic State Index (TSI) | 64 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Ching-Mien Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Ching-Mien Reservoir in Tainan, Taiwan — 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.
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Fishing Ching-Mien Reservoir
Frequently asked questions about Ching-Mien Reservoir
What is the water quality of Ching-Mien Reservoir?
- Ching-Mien Reservoir in Tainan, Taiwan has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 0.4 m visibility. Phosphorus: 30 µg/L. Chlorophyll-a (algae): 36 µg/L.
Is Ching-Mien Reservoir safe to swim in?
- Ching-Mien Reservoir 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.
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Where this data comes from
30 measurements from 2 monitoring stations, 2020. Retrieved from Taiwan MOENV (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Ministry of Environment (Taiwan)
moenv-tw30 samples · 2020
Monitoring station identifiers (2)
21772176
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: 2020-07-07
Monitoring stations: 2