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

How deep is Trap Lake?

No published bathymetric survey covers Trap 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 41 acres.

Trap Lake

Ketchikan Gateway County, Alaska41 acresView map Directions

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

Mean depth

~23 ft est.

HydroLAKES model

Area

41 acres

Surface area

23 ft mean depth (modelled)

See the measurements Directions Where to stay

Trap Lake in Ketchikan Gateway County, Alaska has water-quality measurements published by Alaska DEC, shown here as reported. Surface area: 41 acres.

Loading map…

Trap Lake is a 41-acre lake in Ketchikan Gateway 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.

Swimming conditions

No reading

Not rated

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

Whether Trap 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.

Get alerts for Trap Lake →

Water quality measurements for Trap Lake

These are the measurements Alaska DEC publishes for Trap 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 Trap Lake

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

Lake Details

Mean depth

~23 ft est.

Surface area

41 acres

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

Lake Size & Watershed

Watershed (drainage) area

1 sq mi

HydroLAKES / HydroSHEDS

Mean depth

~23 ft est.

Modelled from terrain, not sounded

Shoreline

1 mi

HydroLAKES / HydroSHEDS

Elevation

394 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.

Stays via Stay22

Stays near Trap Lake

Compare lakeside cabins, hotels, and vacation rentals near Trap Lake in Ketchikan Gateway 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 Trap Lake

Prices for Oct 16–18, 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.

Follow Trap Lake’s readings

Email me when new measurements post for this lake. Updates stay free.

Or email

Fishing Trap Lake

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

Nearby Lakes in Ketchikan Gateway County

Lower Silvis Lake5.8 miView →Buckhorn Lake8.7 miView →Upper Silvis Lake6.2 miView →Whitman Lake5.9 miView →Mahoney Lake8.2 miView →Upper Mahoney Lake8.5 miView →

Frequently asked questions about Trap Lake

Where is Trap Lake?: Trap Lake is a lake in Ketchikan Gateway County, Alaska. Its water-quality measurements are published by Alaska DEC and shown on this page as reported.
What is the water quality of Trap Lake?: Trap Lake in Ketchikan Gateway County, Alaska has water-quality measurements published by Alaska DEC, shown here as reported. Surface area: 41 acres.
Is Trap Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Trap Lake?: No published bathymetric survey covers Trap 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 41 acres.