Long Lake
Juneau County, Alaska1,464 acresView mapDirections
No nutrient or algae sampling on record from Alaska DEC for this lake.
- 101 ft mean depth (modelled)
Long Lake in Juneau County, Alaska has water-quality measurements published by Alaska DEC, shown here as reported. Surface area: 1464 acres.
Long Lake is a 1,464-acre lake in Juneau County, Alaska with an estimated average depth of about 101 feet.
Source: EPA Water Quality Portal sampling records, your state environmental agency. Methodology: how these readings are compared.
What Long Lake is good for
From access and monitoring records, not editorial picks.
- Big water1,464 acres
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Long Lake is safe to swim in today is a call for the Alaska Department of Environmental Conservation and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Long Lake
These are the measurements Alaska DEC 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
Mean depth
~101 ft est.
Surface area
1,464 acres
Depth marked “est.” is a modeled estimate from HydroLAKES, not a measured survey. Alaska has not published bathymetry for Long Lake.
Lake Size & Watershed
Watershed (drainage) area
30 sq mi
HydroLAKES / HydroSHEDS
Mean depth
~101 ft est.
Modelled from terrain, not sounded
Shoreline
12.7 mi
HydroLAKES / HydroSHEDS
Elevation
810 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.
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Stays near Long Lake
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Fishing Long Lake
Nearby Lakes in Juneau County
Frequently asked questions about Long Lake
Where is Long Lake?
- Long Lake is a lake in Juneau County, Alaska. Its water-quality measurements are published by Alaska DEC and shown on this page as reported.
What is the water quality of Long Lake?
- Long Lake in Juneau County, Alaska has water-quality measurements published by Alaska DEC, shown here as reported. Surface area: 1464 acres.
Is Long Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Long Lake?
- No published bathymetric survey covers Long Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 101 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 1464 acres.
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Where this data comes from
Measurements for Long Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)