Spelga Dam
Spelga Dam in Northern Ireland, Northern Ireland has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 20 µg/L.
Why Spelga Dam has no A–F grade
Spelga Dam in Northern Ireland 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 phosphorus, but not water clarity 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 Northern Ireland Environment Agency (DAERA).
Spelga Dam is a lake in Northern Ireland County, Northern Ireland.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2024-12-09. Grade methodology: LakeGrade methodology.
Watch Spelga Dam 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 Spelga Dam
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data. Phosphorus level: 20 µg/L. Trophic State Index: 47.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 20 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 47 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Spelga Dam
Compare lakeside cabins, hotels, and vacation rentals near Spelga Dam in Northern Ireland, Northern Ireland — 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 Spelga Dam
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Fishing Spelga Dam
Frequently asked questions about Spelga Dam
What is the water quality of Spelga Dam?
- Spelga Dam in Northern Ireland, Northern Ireland has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 20 µg/L.
Is Spelga Dam safe to swim in?
- Spelga Dam 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 Spelga Dam across LakeGrade
More lakes in Northern Ireland
Where this data comes from
81 measurements from 1 monitoring station, 2016–2024. Retrieved from the Northern Ireland Environment Agency (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Department of Agriculture, Environment and Rural Affairs (Northern Ireland)
daera-ni81 samples · 2016–2024
Analytical methods
- DAERA NIEA lake nutrient monitoring
Monitoring station identifiers (1)
10932
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: 2024-12-09
Monitoring stations: 1