Where is Mountain Island Lake?

Mountain Island Lake is a lake in Gaston County, North Carolina. Its water-quality measurements are published by NC DEQ and shown on this page as reported.

Are there boat ramps on Mountain Island Lake?

Mountain Island Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Neck Road. Public access is listed as yes.

Can I fish at Mountain Island Lake?

Mountain Island Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by North Carolina's fish and wildlife agency, so check its current regulations before you go.

Mountain Island Lake

Gaston County, North Carolina1,962 acresView map Directions

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

Area

1,962 acres

Surface area

Shoreline

49.7 mi

Measured length

Impaired · PCBs
Public access

See the measurements Directions Where to stay

Mountain Island Lake in Gaston County, North Carolina has water-quality measurements published by NC DEQ, shown here as reported. Surface area: 1962 acres.

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Mountain Island Lake is a 1,962-acre lake in Gaston County, North Carolina. Limited fish-species data available. Public access is available with 1 public boat landing.

Source: EPA Water Quality Portal sampling records, NCDEQ. Methodology: how these readings are compared.

What Mountain Island Lake is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp
Big water1,962 acres

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Mountain Island Lake is listed impaired under Clean Water Act §303(d) (IR 5) for pCBs. Check local advisories before you swim.

Whether Mountain Island Lake is safe to swim in today is a call for the North Carolina 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 Mountain Island Lake

These are the measurements NC DEQ publishes for Mountain Island 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 Mountain Island Lake

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

Lake Details

Surface area

1,962 acres

Shoreline

49.7 mi

Public access

Yes

Listed by NC DEQ

No bathymetric survey has been published for Mountain Island Lake, so its depth is not documented here.

Recreation & Access

Boat Landings

Yes

Public Access

Neck RoadPublic

Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps

Stays via Stay22

Stays near Mountain Island Lake

Compare lakeside cabins, hotels, and vacation rentals near Mountain Island Lake in Gaston County, North Carolina — 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 Mountain Island Lake

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Fishing Mountain Island Lake

→ Mountain Island Lake fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Mountain Island Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).

Causes of impairment

PCBs

Designated uses not supporting: Fish consumption.

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit NC11-(114) · Official waterbody report

Nearby Lakes in Gaston County

Mountain Island LakeMesotrophic1.6 miView →Noname13 miView →Lake WylieEutrophic13.9 miView →S Fork Catawba Riv Lake3.9 ft clear · Eutrophic14.7 miView →Catawba Creek Lake3.6 ft clear · Eutrophic—View →Robinwood Lake—View →

Frequently asked questions about Mountain Island Lake

Where is Mountain Island Lake?: Mountain Island Lake is a lake in Gaston County, North Carolina. Its water-quality measurements are published by NC DEQ and shown on this page as reported.
What is the water quality of Mountain Island Lake?: Mountain Island Lake in Gaston County, North Carolina has water-quality measurements published by NC DEQ, shown here as reported. Surface area: 1962 acres.
Is Mountain Island Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Mountain Island Lake is listed impaired under Clean Water Act §303(d) (IR 5) for pCBs. Check local advisories before you swim.
Are there boat ramps on Mountain Island Lake?: Mountain Island Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Neck Road. Public access is listed as yes.
Can I fish at Mountain Island Lake?: Mountain Island Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by North Carolina's fish and wildlife agency, so check its current regulations before you go.