Chaparral Park Lake
Maricopa County, ArizonaView mapDirections
ADEQ publishes the water-quality measurements for Chaparral Park Lake. Here is what has been measured.
- Eutrophic
- Limited data
Chaparral Park Lake in Maricopa County, Arizona has water-quality measurements published by ADEQ, shown here as reported. Water clarity: 3 ft visibility. Phosphorus: 23 µg/L.
Chaparral Park Lake is a productive, nutrient-rich eutrophic lake in Maricopa County, Arizona. Overall water quality is improving over recent sampling years. Compared to the 2 other monitored lakes in Maricopa County, Chaparral Park Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, ADEQ, last sampled 2026-04-07. Methodology: how these readings are compared.
Swimming conditions
Readings onlyLimited data
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Chaparral Park Lake is safe to swim in today is a call for the Arizona Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Chaparral Park Lake
These are the measurements ADEQ publishes for Chaparral Park Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 3 ft of visibility. Phosphorus 23 µg/L. TSI 55.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 23µg/L | Good GoodFairPoor |
| 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. | 55 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Chaparral Park Lake
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Stays near Chaparral Park Lake
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Fishing Chaparral Park Lake
Water quality readings over time
2 seasons of samples on record (2019–2022). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Stable2 years
Phosphorus
Improving-25.67 µg/L/yr2 years
Nearby Lakes in Maricopa County
Frequently asked questions about Chaparral Park Lake
Where is Chaparral Park Lake?
- Chaparral Park Lake is a lake in Maricopa County, Arizona. Its water-quality measurements are published by ADEQ and shown on this page as reported.
What is the water quality of Chaparral Park Lake?
- Chaparral Park Lake in Maricopa County, Arizona has water-quality measurements published by ADEQ, shown here as reported. Water clarity: 3 ft visibility. Phosphorus: 23 µg/L.
Is Chaparral Park Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
14 measurements from 1 monitoring station, 2022–2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Great Lakes Environmental Center
GLEC14 samples · 2022–2026
Analytical methods
- 4500 P E ~ Phosphorus in Water by Colorimetry- Ascorbic Acid Method
- 300.0 ~ EPA; Determination of Inorganic Anions by Ion Chromatography
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.