Nan-Hua Reservoir
Nan-Hua Reservoir in Tainan, Taiwan has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1 m visibility. Phosphorus: 14.5 µg/L. Chlorophyll-a (algae): 3.6 µg/L.
- Clarity
- 1 m
Why Nan-Hua Reservoir has no A–F grade
Nan-Hua 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).
Nan-Hua 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 Nan-Hua Reservoir
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Very murky, less than 3.3 ft of visibility. Phosphorus level: 14.5 µg/L. Chlorophyll-a: 3.6 µg/L. Trophic State Index: 49.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1 m | Not graded |
| Phosphorus | 14.5 µg/L | Not graded |
| Chlorophyll-a (Algae) | 3.6 µg/L | Not graded |
| Trophic State Index (TSI) | 49 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Nan-Hua Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Nan-Hua 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 Nan-Hua Reservoir
Frequently asked questions about Nan-Hua Reservoir
What is the water quality of Nan-Hua Reservoir?
- Nan-Hua Reservoir in Tainan, Taiwan has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1 m visibility. Phosphorus: 14.5 µg/L. Chlorophyll-a (algae): 3.6 µg/L.
Is Nan-Hua Reservoir safe to swim in?
- Nan-Hua 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 3 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 (3)
218021792178
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: 3