Copper Canyon Inlet Lake
Copper Canyon Inlet Lake in San Bernardino County, California has a water quality grade of D (Nutrient-rich). Water clarity: 15.5 ft visibility. Phosphorus: 385 µg/L.
- Clarity
- 15.5 ft
- Type
- Eutrophic
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Copper Canyon Inlet Lake →
Copper Canyon Inlet Lake is a productive, nutrient-rich eutrophic lake in San Bernardino County, California. Water quality is graded D based on 2 sampling years through 2022. Public access is available with 1 public boat landing. Compared to the 3 other monitored lakes in San Bernardino County, Copper Canyon Inlet Lake ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2022-03-25. Grade methodology: LakeGrade methodology.
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Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum
Water Quality Grade: D (Nutrient-rich)
Crystal clear, you can see 15.5 ft down. Phosphorus level: 385 µg/L. Trophic State Index: 64.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 15.5 ft | Not graded |
| Phosphorus | 385 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 64 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Copper Canyon Inlet Lake
Compare lakeside cabins, hotels, and vacation rentals near Copper Canyon Inlet Lake in San Bernardino County, California — 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. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around Copper Canyon Inlet Lake are listed below.
Top-rated places to stay near Copper Canyon Inlet Lake
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Recreation & Access
- Havasu Palms - Palms MarinaSemi-private
Named access points from the USGS National Boat Ramps inventory, snapped within 5 km. More lakes with boat ramps
Fishing Copper Canyon Inlet Lake
County Ranking
Ranked #4 of 4 lakes in San Bernardino County
Nearby Lakes in San Bernardino County
Frequently asked questions about Copper Canyon Inlet Lake
Where is Copper Canyon Inlet Lake?
- Copper Canyon Inlet Lake is a lake in San Bernardino County, California. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Copper Canyon Inlet Lake?
- Copper Canyon Inlet Lake in San Bernardino County, California has a water quality grade of D (Nutrient-rich). Water clarity: 15.5 ft visibility. Phosphorus: 385 µg/L.
Is Copper Canyon Inlet Lake safe to swim in?
- Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. Copper Canyon Inlet Lake has a water quality grade of D (Nutrient-rich). Always check local health department advisories before swimming.
Are there boat ramps on Copper Canyon Inlet Lake?
- Copper Canyon Inlet Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Havasu Palms - Palms Marina.
Explore Copper Canyon Inlet Lake across LakeGrade
More California Lake Rankings
Other Grade D Lakes in California
Riverside County · Nutrient-rich
Los Angeles County · Nutrient-rich
Tuolumne County · Nutrient-rich
Alpine County · Nutrient-rich
Marin County · Nutrient-rich
Lake County · Nutrient-rich
Eutrophic Lakes in California
Where this data comes from
36 measurements from 1 monitoring station, 2020–2022. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- Chemehuevi Indian Tribe
CHEMEHUEVI_WQX36 samples · 2020–2022
Analytical methods
- Unknown - Historic Data
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