Where is Petersburg Lake?

Petersburg Lake is a lake in Petersburg County, Alaska. Its water-quality measurements are published by Alaska DEC and shown on this page as reported.

How deep is Petersburg Lake?

No published bathymetric survey covers Petersburg Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 23 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 180 acres.

Are there campgrounds on Petersburg Lake?

Petersburg Lake has 1 public campground from USGS The National Map within 5 km, including Petersburg Lake Cabin. 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.

Petersburg Lake

Petersburg County, Alaska180 acresView map Directions

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

Mean depth

~23 ft est.

HydroLAKES model

Area

180 acres

Surface area

23 ft mean depth (modelled)

See the measurements Directions Where to stay

Petersburg Lake in Petersburg County, Alaska has water-quality measurements published by Alaska DEC, shown here as reported. Surface area: 180 acres.

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Petersburg Lake is a 180-acre lake in Petersburg County, Alaska with an estimated average depth of about 23 feet.

Source: EPA Water Quality Portal sampling records, your state environmental agency. Methodology: how these readings are compared.

What Petersburg Lake is good for

From access and monitoring records, not editorial picks.

Camping1 public campground nearby

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether Petersburg 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.

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Water quality measurements for Petersburg Lake

These are the measurements Alaska DEC publishes for Petersburg 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 Petersburg Lake

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

Lake Details

Mean depth

~23 ft est.

Surface area

180 acres

Depth marked “est.” is a modeled estimate from HydroLAKES, not a measured survey. Alaska has not published bathymetry for Petersburg Lake.

Lake Size & Watershed

Watershed (drainage) area

8 sq mi

HydroLAKES / HydroSHEDS

Mean depth

~23 ft est.

Modelled from terrain, not sounded

Shoreline

2.8 mi

HydroLAKES / HydroSHEDS

Elevation

89 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

Campgrounds

Public campgrounds near Petersburg Lake

Petersburg Lake Cabin0.8 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 Petersburg Lake

Compare lakeside cabins, hotels, and vacation rentals near Petersburg Lake in Petersburg County, Alaska — 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 Petersburg Lake

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

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Follow Petersburg Lake’s readings

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Fishing Petersburg Lake

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

Nearby Lakes in Petersburg County

Colp Lake6.1 miView →Towers Lake11.2 miView →Kah Sheets Lake—View →Spurt Point Lake16.7 miView →De Boer Lake17.9 miView →Harvey Lake—View →

Frequently asked questions about Petersburg Lake

Where is Petersburg Lake?: Petersburg Lake is a lake in Petersburg County, Alaska. Its water-quality measurements are published by Alaska DEC and shown on this page as reported.
What is the water quality of Petersburg Lake?: Petersburg Lake in Petersburg County, Alaska has water-quality measurements published by Alaska DEC, shown here as reported. Surface area: 180 acres.
Is Petersburg Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Petersburg Lake?: No published bathymetric survey covers Petersburg Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 23 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 180 acres.
Are there campgrounds on Petersburg Lake?: Petersburg Lake has 1 public campground from USGS The National Map within 5 km, including Petersburg Lake Cabin. 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.