Lake Mary
Coconino County, ArizonaView mapDirections
No nutrient or algae sampling on record from ADEQ for this lake.
- Impaired · Mercury
- 37 ft max depth
- Public access
- Limited data
Lake Mary in Coconino County, Arizona has water-quality measurements published by ADEQ, shown here as reported.
Lake Mary is a lake in Coconino County, Arizona with an estimated average depth of about 37 feet. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, ADEQ, last sampled 2025-11-01. Methodology: how these readings are compared.
Lake Mary has one public boat landing. Vrbo is where to look for cabins and lake homes around Lake Mary, and Booking.com and Expedia search hotels near the lake for your dates.
What Lake Mary is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
- Camping2 public campgrounds nearby
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Lake Mary is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Whether Lake Mary 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 Lake Mary
These are the measurements ADEQ publishes for Lake Mary, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data.
Ask about Lake Mary
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~37 ft est.
Public access
Yes
Listed by ADEQ
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Arizona has not published bathymetry for Lake Mary.
Lake Size & Watershed
Watershed (drainage) area
54 sq mi
HydroLAKES / HydroSHEDS
Surface area
586 acres
HydroLAKES / HydroSHEDS
Shoreline
11.7 mi
HydroLAKES / HydroSHEDS
Elevation
6,818 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Recreation & Access
- Lake Mary - 1Public
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Public campgrounds near Lake Mary
- Lakeview2.0 km
- Pinegrove3.2 kmReserve
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
Stays via Stay22
Stays near Lake Mary
Compare lakeside cabins, hotels, and vacation rentals near Lake Mary in Coconino County, Arizona — 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 Lake Mary
Prices for Oct 30–Nov 1, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip? Cabins and lodging at Lake Mary → · more Arizona lake trips
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Fishing Lake Mary
EPA Impairment Status
Lake Mary is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit AZL15020015-0900_00 · Official waterbody report
Nearby Lakes in Coconino County
Frequently asked questions about Lake Mary
Where is Lake Mary?
- Lake Mary is a lake in Coconino County, Arizona. Its water-quality measurements are published by ADEQ and shown on this page as reported.
What is the water quality of Lake Mary?
- Lake Mary in Coconino County, Arizona has water-quality measurements published by ADEQ, shown here as reported.
Is Lake Mary safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Lake Mary is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
How deep is Lake Mary?
- No published bathymetric survey covers Lake Mary, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 37 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Are there boat ramps on Lake Mary?
- Lake Mary has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lake Mary - 1. Public access is listed as yes.
Can I fish at Lake Mary?
- Lake Mary has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Arizona's fish and wildlife agency, so check its current regulations before you go.
Are there campgrounds on Lake Mary?
- Lake Mary has 2 public campgrounds from USGS The National Map within 5 km, including Lakeview, Pinegrove. 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.
Explore Lake Mary across LakeQuality
Planning a trip around Montezuma Castle?
Lake Mary is about 36 miles from Montezuma Castle National Monument. Crowds there swing hard by season, so the month you pick changes both how busy the park is and what lodging costs.
Best time to visit Montezuma Castle →More lakes in Arizona
Other Lakes in Arizona
Where this data comes from
3 measurements from 1 monitoring station, 2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Great Lakes Environmental Center
GLEC3 samples · 2025
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
Lake size & watershed from HydroLAKES (HydroSHEDS)
Named boat-access points from the USGS National Boat Ramps inventory
Public campgrounds from USGS The National Map Structures, within about 3 miles