Where is Big Grass Lake?

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

How deep is Big Grass Lake?

No published bathymetric survey covers Big Grass Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 11 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 76 acres.

Big Grass Lake

Yukon-Koyukuk County, Alaska76 acresView map Directions

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

Mean depth

~11 ft est.

HydroLAKES model

Area

76 acres

Surface area

11 ft mean depth (modelled)

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Big Grass Lake in Yukon-Koyukuk County, Alaska has water-quality measurements published by Alaska DEC, shown here as reported. Surface area: 76 acres.

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Big Grass Lake is a 76-acre lake in Yukon-Koyukuk County, Alaska with an estimated average depth of about 11 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 Big Grass 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 Big Grass Lake

These are the measurements Alaska DEC publishes for Big Grass 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 Big Grass Lake

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

Lake Details

Mean depth

~11 ft est.

Surface area

76 acres

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

Lake Size & Watershed

Watershed (drainage) area

2 sq mi

HydroLAKES / HydroSHEDS

Mean depth

~11 ft est.

Modelled from terrain, not sounded

Shoreline

1.7 mi

HydroLAKES / HydroSHEDS

Elevation

338 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 Big Grass Lake

Compare lakeside cabins, hotels, and vacation rentals near Big Grass Lake in Yukon-Koyukuk 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.

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Fishing Big Grass Lake

→ Big Grass Lake fishing regulations (limits, seasons, special rules)

Nearby Lakes in Yukon-Koyukuk County

Bubbling Lake1.5 miView →Lily Lake1.3 miView →Mallard Lake1.8 miView →Heart Lake2.5 miView →Fourth Lake—View →Luke Lake—View →

Frequently asked questions about Big Grass Lake

Where is Big Grass Lake?: Big Grass Lake is a lake in Yukon-Koyukuk County, Alaska. Its water-quality measurements are published by Alaska DEC and shown on this page as reported.
What is the water quality of Big Grass Lake?: Big Grass Lake in Yukon-Koyukuk County, Alaska has water-quality measurements published by Alaska DEC, shown here as reported. Surface area: 76 acres.
Is Big Grass Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Big Grass Lake?: No published bathymetric survey covers Big Grass Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 11 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 76 acres.