Carp Lake
Pierce County, WashingtonView mapDirections
Washington Ecology publishes the water-quality measurements for Carp Lake. Here is what has been measured.
- Public access
- Limited data
Carp Lake in Pierce County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Water clarity: 6.6 ft visibility.
Carp Lake is a lake in Pierce County, Washington. Overall water quality is improving over recent sampling years. Limited fish-species data available. Public access is available.
Source: EPA Water Quality Portal sampling records, WA Ecology, last sampled 2016-07-10. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Carp Lake is safe to swim in today is a call for the Washington State Department of Ecology and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Carp Lake
These are the measurements Washington Ecology publishes for Carp Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 6.6 ft. TSI 50.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 6.6ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading 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. | 50 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Carp Lake
Answers come straight from the public measurements and survey records on this page.
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Fishing Carp Lake
Water Quality Trend: Improving
Based on 4 years of monitoring (2012–2021).
Water clarity
Improving4 years
Nearby Lakes in Pierce County
Frequently asked questions about Carp Lake
Where is Carp Lake?
- Carp Lake is a lake in Pierce County, Washington. Its water-quality measurements are published by Washington Ecology and shown on this page as reported.
What is the water quality of Carp Lake?
- Carp Lake in Pierce County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Water clarity: 6.6 ft visibility.
Is Carp Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Can I fish at Carp Lake?
- Public access to Carp Lake is listed as yes on the lake record. Seasons, size and bag limits, and whether you need a license are set by Washington's fish and wildlife agency, so check its current regulations before you go.
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Where this data comes from
3 measurements from 1 monitoring station, 2012–2016. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- North American Lake Management Society
NALMS3 samples · 2012–2016
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.