Upper Dewey Reservoir
Skagway County, Alaska29 acresView mapDirections
No nutrient or algae sampling on record from Alaska DEC for this lake.
- 20 ft mean depth (modelled)
Upper Dewey Reservoir in Skagway County, Alaska has water-quality measurements published by Alaska DEC, shown here as reported. Surface area: 29 acres.
Upper Dewey Reservoir is a 29-acre lake in Skagway County, Alaska with an estimated average depth of about 20 feet.
Source: EPA Water Quality Portal sampling records, your state environmental agency. Methodology: how these readings are compared.
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Upper Dewey Reservoir 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 Upper Dewey Reservoir
These are the measurements Alaska DEC publishes for Upper Dewey Reservoir, 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 Upper Dewey Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Mean depth
~20 ft est.
Surface area
29 acres
Depth marked “est.” is a modeled estimate from HydroLAKES, not a measured survey. Alaska has not published bathymetry for Upper Dewey Reservoir.
Lake Size & Watershed
Watershed (drainage) area
2 sq mi
HydroLAKES / HydroSHEDS
Mean depth
~20 ft est.
Modelled from terrain, not sounded
Shoreline
0.9 mi
HydroLAKES / HydroSHEDS
Elevation
3,074 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 Upper Dewey Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Upper Dewey Reservoir in Skagway 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 Upper Dewey Reservoir
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 Upper Dewey Reservoir’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Upper Dewey Reservoir
Nearby Lakes in Skagway County
Frequently asked questions about Upper Dewey Reservoir
Where is Upper Dewey Reservoir?
- Upper Dewey Reservoir is a lake in Skagway County, Alaska. Its water-quality measurements are published by Alaska DEC and shown on this page as reported.
What is the water quality of Upper Dewey Reservoir?
- Upper Dewey Reservoir in Skagway County, Alaska has water-quality measurements published by Alaska DEC, shown here as reported. Surface area: 29 acres.
Is Upper Dewey Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Upper Dewey Reservoir?
- No published bathymetric survey covers Upper Dewey Reservoir, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 20 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 29 acres.
Explore Upper Dewey Reservoir across LakeQuality
More lakes in Alaska
Other Lakes in Alaska
Where this data comes from
Measurements for Upper Dewey Reservoir 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)