Where is Grayling Lake?

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

How deep is Grayling Lake?

No published bathymetric survey covers Grayling Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 35 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.

Grayling Lake

Yukon-Koyukuk Census Area County, AlaskaView map Directions

Alaska DEC publishes the water-quality measurements for Grayling Lake. Here is what has been measured.

Phosphorus

200 µg/L

Measured by Alaska DEC

Mean depth

~35 ft est.

HydroLAKES model

35 ft mean depth (modelled)
Limited data

See the measurements Directions Where to stay

Grayling Lake in Yukon-Koyukuk Census Area County, Alaska has water-quality measurements published by Alaska DEC, shown here as reported. Phosphorus: 200 µg/L.

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Grayling Lake is a lake in Yukon-Koyukuk Census Area County, Alaska with an estimated average depth of about 35 feet.

Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2023-06-05. Methodology: how these readings are compared.

Swimming conditions

No reading

Limited data

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

Whether Grayling 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 Grayling Lake

These are the measurements Alaska DEC publishes for Grayling 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. Phosphorus 200 µg/L. TSI 81.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)		No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	200µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)		No reading The green pigment in algae — a direct measure of how much algae is in the water.
Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a.	81	Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic

Very high nutrients, dense algae, poor clarity

Ask about Grayling Lake

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Lake Details

Mean depth

~35 ft est.

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

Lake Size & Watershed

Watershed (drainage) area

4 sq mi

HydroLAKES / HydroSHEDS

Surface area

99 acres

HydroLAKES / HydroSHEDS

Mean depth

~35 ft est.

Modelled from terrain, not sounded

Shoreline

1.7 mi

HydroLAKES / HydroSHEDS

Elevation

1,355 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 Grayling Lake

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Fishing Grayling Lake

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

Nearby Lakes in Yukon-Koyukuk Census Area County

Florence Creek Lake—View →Olsons Lake—View →Winers Lake—View →Jennie Creek Lake—View →Minnie Creek Lake—View →Glacier Lake—View →

Frequently asked questions about Grayling Lake

Where is Grayling Lake?: Grayling Lake is a lake in Yukon-Koyukuk Census Area County, Alaska. Its water-quality measurements are published by Alaska DEC and shown on this page as reported.
What is the water quality of Grayling Lake?: Grayling Lake in Yukon-Koyukuk Census Area County, Alaska has water-quality measurements published by Alaska DEC, shown here as reported. Phosphorus: 200 µg/L.
Is Grayling Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Grayling Lake?: No published bathymetric survey covers Grayling Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 35 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.

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