Lake Inez Off Helms Rd S End of Lake
Missoula County, MontanaView mapDirections
No nutrient or algae sampling on record from Montana DEQ for this lake.
- Limited data
Lake Inez Off Helms Rd S End of Lake in Missoula County, Montana has water-quality measurements published by Montana DEQ, shown here as reported.
Lake Inez Off Helms Rd S End of Lake is a lake in Missoula County, Montana. Phosphorus level is declining over recent sampling years. Compared to the 39 other monitored lakes in Missoula County, Lake Inez Off Helms Rd S End of Lake ranks #12 for water quality.
Source: EPA Water Quality Portal sampling records, Montana DEQ, last sampled 2021-09-17. Methodology: how these readings are compared.
Swimming conditions
Readings onlyLimited data
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lake Inez Off Helms Rd S End of Lake 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.
Water quality measurements for Lake Inez Off Helms Rd S End of Lake
These are the measurements Montana DEQ publishes for Lake Inez Off Helms Rd S End of 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.
Ask about Lake Inez Off Helms Rd S End of Lake
Answers come straight from the public measurements and survey records on this page.
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Fishing Lake Inez Off Helms Rd S End of Lake
Water Quality Trend: Stable
Based on 12 years of monitoring (2012–2025).
Water clarity
Stable8 years
Phosphorus
Worsening+1.54 µg/L/yr4 years
Chlorophyll-a
Improving-0.9 µg/L/yr2 years
Nearby Lakes in Missoula County
Frequently asked questions about Lake Inez Off Helms Rd S End of Lake
Where is Lake Inez Off Helms Rd S End of Lake?
- Lake Inez Off Helms Rd S End of Lake is a lake in Missoula County, Montana. Its water-quality measurements are published by Montana DEQ and shown on this page as reported.
What is the water quality of Lake Inez Off Helms Rd S End of Lake?
- Lake Inez Off Helms Rd S End of Lake in Missoula County, Montana has water-quality measurements published by Montana DEQ, shown here as reported.
Is Lake Inez Off Helms Rd S End of Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
4 measurements from 1 monitoring station, 2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Montana Volunteer Water Quality Monitoring
MTVOLWQM_WQX4 samples · 2021
Analytical methods
- 4500 N C ~ Persufate Method for Total Nitrogen
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.