Lower Long Lake
Noble County, Indiana64 acresView mapDirections
IDEM publishes the water-quality measurements for Lower Long Lake. Here is what has been measured.
- Impaired · Nutrients (phosphorus, nitrogen)
- 55 ft max depth
- Limited data
Lower Long Lake in Noble County, Indiana has water-quality measurements published by IDEM, shown here as reported. Phosphorus: 59.5 µg/L. Chlorophyll-a (algae): 4.2 µg/L. Maximum depth: 55.1 ft. Surface area: 64 acres.
Lower Long Lake is a 64-acre lake in Noble County, Indiana with a maximum depth of 55 feet (12-foot average).
Source: EPA Water Quality Portal sampling records, IDEM, last sampled 2020-07-07. Methodology: how these readings are compared.
What Lower Long Lake is good for
From access and monitoring records, not editorial picks.
- Deep water55.1 ft surveyed max depth
Swimming conditions
No readingRecreation use not supported
Nutrient and algae readings are not a swimming clearance. Lower Long Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Lower Long Lake is safe to swim in today is a call for the Indiana Department of Environmental Management and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lower Long Lake
These are the measurements IDEM publishes for Lower Long 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 59.5 µg/L. Chlorophyll-a 4.2 µg/L.
| 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 | 59.5µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 4.2µg/L | Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water. |
Ask about Lower Long Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
55.1 ft
Average depth
12.1 ft
Surface area
64 acres
Shoreline
1.6 mi
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Stays near Lower Long Lake
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Fishing Lower Long Lake
EPA Impairment Status
Lower Long Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Recreation.
Source: EPA ATTAINS assessment unit INJ01P1208_00 · Official waterbody report
Nearby Lakes in Noble County
Frequently asked questions about Lower Long Lake
Where is Lower Long Lake?
- Lower Long Lake is a lake in Noble County, Indiana. Its water-quality measurements are published by IDEM and shown on this page as reported.
What is the water quality of Lower Long Lake?
- Lower Long Lake in Noble County, Indiana has water-quality measurements published by IDEM, shown here as reported. Phosphorus: 59.5 µg/L. Chlorophyll-a (algae): 4.2 µg/L. Maximum depth: 55.1 ft. Surface area: 64 acres.
Is Lower Long Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Lower Long Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Lower Long Lake?
- Lower Long Lake has a maximum depth of 55.1 feet and an average depth of 12.1 feet. The lake covers 64 acres.
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Where this data comes from
Measurements for Lower Long Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database