Where is Jolly John Reservoir?

Jolly John Reservoir is a lake in Arapahoe County, Colorado. Its water-quality measurements are published by Colorado WQCD and shown on this page as reported.

Jolly John Reservoir

Arapahoe County, Colorado40 acresView map Directions

No nutrient or algae sampling on record from Colorado WQCD for this lake.

Area

40 acres

Surface area

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Jolly John Reservoir in Arapahoe County, Colorado has water-quality measurements published by Colorado WQCD, shown here as reported. Surface area: 40 acres.

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Jolly John Reservoir is a 40-acre lake in Arapahoe County, Colorado.

Source: EPA Water Quality Portal sampling records, CDPHE. 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 Jolly John Reservoir is safe to swim in today is a call for the Water Quality Control Division of the Colorado Department of Public Health and Environment and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Jolly John Reservoir

These are the measurements Colorado WQCD publishes for Jolly John 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 Jolly John Reservoir

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

Lake Details

Surface area

40 acres

No bathymetric survey has been published for Jolly John Reservoir, so its depth is not documented here.

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Stays near Jolly John Reservoir

Compare lakeside cabins, hotels, and vacation rentals near Jolly John Reservoir in Arapahoe County, Colorado — 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 Jolly John Reservoir

→ Jolly John Reservoir fishing regulations (limits, seasons, special rules)

Nearby Lakes in Arapahoe County

Noonen Reservoir11.2 miView →Aurora Reservoir—View →Quincy Reservoir—View →Cherry Creek Reservoir Top—View →Cherry Creek Reservoir Bottom—View →McLellan Reservoir—View →

Frequently asked questions about Jolly John Reservoir

Where is Jolly John Reservoir?: Jolly John Reservoir is a lake in Arapahoe County, Colorado. Its water-quality measurements are published by Colorado WQCD and shown on this page as reported.
What is the water quality of Jolly John Reservoir?: Jolly John Reservoir in Arapahoe County, Colorado has water-quality measurements published by Colorado WQCD, shown here as reported. Surface area: 40 acres.
Is Jolly John Reservoir safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.