Long Lake is a lake in Coconino County, Arizona. Its water-quality measurements are published by ADEQ and shown on this page as reported.

Are there boat ramps on Long Lake?

Long Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Long Lake. Public access is listed as yes.

Can I fish at Long Lake?

Long Lake 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.

Long Lake

Coconino County, Arizona338 acresView map Directions

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

Area

338 acres

Surface area

Shoreline

4.7 mi

Measured length

Impaired · Mercury
Public access

See the measurements Directions Where to stay

Long Lake in Coconino County, Arizona has water-quality measurements published by ADEQ, shown here as reported. Surface area: 338 acres.

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Long Lake is a 338-acre lake in Coconino County, Arizona. Limited fish-species data available. Public access is available with 1 public boat landing.

Source: EPA Water Quality Portal sampling records, ADEQ. Methodology: how these readings are compared.

What Long Lake is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Long Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.

Whether Long 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 Long Lake

These are the measurements ADEQ publishes for Long 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. TSI undefined.

Ask about Long Lake

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

Lake Details

Surface area

338 acres

Shoreline

4.7 mi

Public access

Yes

Listed by ADEQ

No bathymetric survey has been published for Long Lake, so its depth is not documented here.

Recreation & Access

Boat Landings

Yes

Public Access

Long LakePublic

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

Stays via Stay22

Stays near Long Lake

Compare lakeside cabins, hotels, and vacation rentals near Long Lake 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 Long Lake

Prices for Oct 16–18, 4 adults. Change dates on the map below.

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Planning a trip? Cabins and lodging at Long Lake → · more Arizona lake trips

Follow Long Lake’s readings

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Fishing Long Lake

→ Long Lake fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Long Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).

Causes of impairment

Mercury

Designated uses not supporting: Fish consumption.

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit AZL15020008-0820_00 · Official waterbody report

Nearby Lakes in Coconino County

Soldier Annex Lake1 miView →Red Lake1.7 miView →Tremaine Lake1.9 miView →Hay Lake3.2 miView →Daze Lake3.6 miView →Morton Lake8.6 miView →

Frequently asked questions about Long Lake

Where is Long Lake?: Long Lake 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 Long Lake?: Long Lake in Coconino County, Arizona has water-quality measurements published by ADEQ, shown here as reported. Surface area: 338 acres.
Is Long Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Long Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Are there boat ramps on Long Lake?: Long Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Long Lake. Public access is listed as yes.
Can I fish at Long Lake?: Long Lake 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.