Where is Rocky Reef Reservoir?

Rocky Reef Reservoir is a lake in Cascade County, Montana. Its water-quality measurements are published by Montana DEQ and shown on this page as reported.

Rocky Reef Reservoir

Cascade County, Montana136 acresView map Directions

No nutrient or algae sampling on record from Montana DEQ for this lake.

Area

136 acres

Surface area

Shoreline

3.9 mi

Measured length

See the measurements Directions Where to stay

Rocky Reef Reservoir in Cascade County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Surface area: 136 acres.

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Rocky Reef Reservoir is a 136-acre lake in Cascade County, Montana.

Source: EPA Water Quality Portal sampling records, Montana DEQ. 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 Rocky Reef Reservoir is safe to swim in today is a call for the Montana Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Rocky Reef Reservoir

These are the measurements Montana DEQ publishes for Rocky Reef 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 Rocky Reef Reservoir

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

Lake Details

Surface area

136 acres

Shoreline

3.9 mi

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

Stays via Stay22

Stays near Rocky Reef Reservoir

Compare lakeside cabins, hotels, and vacation rentals near Rocky Reef Reservoir in Cascade County, Montana — 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 Rocky Reef Reservoir

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Fishing Rocky Reef Reservoir

→ Rocky Reef Reservoir fishing regulations (limits, seasons, special rules)

Nearby Lakes in Cascade County

Rocky Reef Reservoir0.3 miView →Gollaher Reservoir12.5 miView →Schrammeck Lake14 miView →Middle Creek Lake—View →Benton Lake—View →Benton Lake—View →

Frequently asked questions about Rocky Reef Reservoir

Where is Rocky Reef Reservoir?: Rocky Reef Reservoir is a lake in Cascade County, Montana. Its water-quality measurements are published by Montana DEQ and shown on this page as reported.
What is the water quality of Rocky Reef Reservoir?: Rocky Reef Reservoir in Cascade County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Surface area: 136 acres.
Is Rocky Reef Reservoir safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.