Chatcolet Lake
Benewah County, IdahoView mapDirections
Not enough samples to grade — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). No letter yet. Here is what we do have.
- Public access
- Limited data
Chatcolet Lake in Benewah County, Idaho is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 23.5 µg/L.
- Phosphorus
- 23.5 µg/L
- Public access
- Yes
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Watch Chatcolet Lake’s letter
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Why Chatcolet Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Chatcolet Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded phosphorus, but not water clarity and algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by IDEQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Chatcolet Lake is a lake in Benewah County, Idaho. Limited fish-species data available. Public access is available with 3 public boat landings.
Source: EPA Water Quality Portal sampling records, IDEQ, last sampled 2012-11-27. Grade methodology: LakeQuality methodology.
What Chatcolet Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch3 documented ramps
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Chatcolet Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Phosphorus 23.5 µg/L. TSI 50.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 23.5 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 50 | Mesotrophic |
Moderate nutrients, good water quality
Recreation & Access
- Round Lake - O'Gara Bay RoadPublic
- ChatcoletPublic
- Rocky PointPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Chatcolet Lake
Nearby Lakes in Benewah County
Frequently asked questions about Chatcolet Lake
Where is Chatcolet Lake?
- Chatcolet Lake is a lake in Benewah County, Idaho. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Chatcolet Lake?
- Chatcolet Lake in Benewah County, Idaho is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 23.5 µg/L.
Is Chatcolet Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Chatcolet Lake?
- Chatcolet Lake has 3 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Round Lake - O'Gara Bay Road, Chatcolet, Rocky Point. Public access is listed as yes.
Explore Chatcolet Lake across LakeQuality
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Where this data comes from
16 measurements from 1 monitoring station, 2012. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Coeur D'Alene Tribe (Tribal)
CDATWATRES16 samples · 2012
Analytical methods
- Total Phosphorus After Block Digestion
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory