Ideq Lake
Kootenai County, IdahoView mapDirections
Idaho DEQ publishes the water-quality measurements for Ideq Lake. Here is what has been measured.
- Impaired · Mercury
- Public access
- Limited data
Ideq Lake in Kootenai County, Idaho has water-quality measurements published by Idaho DEQ, shown here as reported. Phosphorus: 5.5 µg/L. Chlorophyll-a (algae): 1.1 µg/L.
Ideq Lake is a lake in Kootenai County, Idaho. Limited fish-species data available. Public access is available with 5 public boat landings.
Source: EPA Water Quality Portal sampling records, IDEQ, last sampled 2012-09-19. Methodology: how these readings are compared.
What Ideq Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch5 documented ramps
Swimming conditions
No readingRecreation use not supported
Nutrient and algae readings are not a swimming clearance. Ideq Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, metals (other than mercury). Check local advisories before you swim.
Whether Ideq Lake is safe to swim in today is a call for the Idaho Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Ideq Lake
These are the measurements Idaho DEQ publishes for Ideq 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 5.5 µg/L. Chlorophyll-a 1.1 µg/L. TSI 30.
| 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 | 5.5µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 1.1µg/L | Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water. |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 30 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Ideq Lake
Answers come straight from the public measurements and survey records on this page.
Recreation & Access
- Mica BayPublic
- Loffs BayPublic
- Turner BayPublic
- Carlin BayPublic
- Goulds LandingPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Ideq Lake
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Fishing Ideq Lake
EPA Impairment Status
Ideq Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life, Recreation.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit ID17010303PN001L_0L · Official waterbody report
Nearby Lakes in Kootenai County
Frequently asked questions about Ideq Lake
Where is Ideq Lake?
- Ideq Lake is a lake in Kootenai County, Idaho. Its water-quality measurements are published by Idaho DEQ and shown on this page as reported.
What is the water quality of Ideq Lake?
- Ideq Lake in Kootenai County, Idaho has water-quality measurements published by Idaho DEQ, shown here as reported. Phosphorus: 5.5 µg/L. Chlorophyll-a (algae): 1.1 µg/L.
Is Ideq Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Ideq Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, metals (other than mercury). Check local advisories before you swim.
Are there boat ramps on Ideq Lake?
- Ideq Lake has 5 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Mica Bay, Loffs Bay, Turner Bay, Carlin Bay, among others. Public access is listed as yes.
Can I fish at Ideq Lake?
- Ideq Lake has 5 documented boat landings in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Idaho's fish and wildlife agency, so check its current regulations before you go.
Explore Ideq Lake across LakeQuality
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Where this data comes from
28 measurements from 2 monitoring stations, 2012. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Idaho Department Of Environmental Quality
IDEQ_CDAOFFICE_WQX28 samples · 2012
Analytical methods
- 4500 P E ~ Phosphorus in Water by Colorimetry- Ascorbic Acid Method
- 10200 H 3 ~ Chlorophyll a-b-c Determination by fluorometer
Monitoring station identifiers (2)
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.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Named boat-access points from the USGS National Boat Ramps inventory