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LakeQuality

Apache Lake

Maricopa County, ArizonaView mapDirections

No nutrient or algae sampling on record from ADEQ for this lake.

Trend
Declining
2 years of samples
  • Impaired · Mercury
  • Public access
  • Limited data

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Answers come straight from the public measurements and survey records on this page.

Apache Lake in Maricopa County, Arizona has water-quality measurements published by ADEQ, shown here as reported.

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Apache Lake is a lake in Maricopa County, Arizona. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available with 3 public boat landings.

Source: EPA Water Quality Portal sampling records, ADEQ, last sampled 2026-04-08. Grade methodology: LakeQuality methodology.

What Apache Lake is good for

From access and monitoring records, not editorial picks.

  • Boat launch3 documented ramps
  • Camping5 public campgrounds nearby

Swimming conditions

No reading

Limited data

Nutrient and algae readings are not a swimming clearance. Apache Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, oxygen depletion (low DO). Check local advisories before you swim.

Whether Apache 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.

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Water quality measurements for Apache Lake

These are the measurements ADEQ publishes for Apache Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.

No clarity data.

MetricValueEPA condition class
Water Clarity (Secchi Depth)No recent samples
PhosphorusNo recent samples
Chlorophyll-a (Algae)No recent samples

Recreation & Access

3
Boat Landings
Yes
Public Access
5
Campgrounds
  • Apache Lake - 1Public
  • Apache Lake - 3Public
  • Apache Lake - 2Public

Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps

Public campgrounds near Apache Lake

  • Apache Lake North Shore Boat Cg3.4 km
  • Apache Lake North Shore Boat Cg3.4 km
  • Lower Burnt Corral4.0 km
  • Burnt Corral Campground4.0 km
  • Upper Burnt Corral4.8 km

Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes

Fishing Apache Lake

Based on 2 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Declining-0.43 m/yr2
Phosphorus Declining+80 µg/L/yr2

EPA Impairment Status

Apache Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

MercuryOxygen depletion (low DO)

Source: EPA ATTAINS assessment unit AZL15060106A-0070_00 · Official waterbody report

Nearby Lakes in Maricopa County

Frequently asked questions about Apache Lake

Where is Apache Lake?

Apache 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 Apache Lake?

Apache Lake in Maricopa County, Arizona has water-quality measurements published by ADEQ, shown here as reported.

Is Apache Lake safe to swim in?

Nutrient and algae readings are not a swimming clearance. Apache Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, oxygen depletion (low DO). Check local advisories before you swim.

Are there boat ramps on Apache Lake?

Apache Lake has 3 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Apache Lake - 1, Apache Lake - 3, Apache Lake - 2. Public access is listed as yes.

Are there campgrounds on Apache Lake?

Apache Lake has 5 public campgrounds from USGS The National Map within 5 km, including Apache Lake North Shore Boat Cg, Apache Lake North Shore Boat Cg, Lower Burnt Corral, Burnt Corral Campground. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.

Where this data comes from

3 measurements from 1 monitoring station, 2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.

Collected and reported by

  • Great Lakes Environmental CenterGLEC3 samples · 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.

Other records on this page

Impairment status from EPA ATTAINS 303(d) database

Named boat-access points from the USGS National Boat Ramps inventory

Public campgrounds from USGS The National Map Structures, within about 3 miles