Chateau Sur Mer Lake
Lee County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Chateau Sur Mer Lake. Here is what has been measured.
- Hypereutrophic
- Limited data
Chateau Sur Mer Lake in Lee County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Phosphorus: 123 µg/L.
Chateau Sur Mer Lake is a highly nutrient-loaded hypereutrophic lake in Lee County, Florida. Overall water quality is improving over recent sampling years. Compared to the 73 other monitored lakes in Lee County, Chateau Sur Mer Lake ranks #47 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-04-22. 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 Chateau Sur Mer Lake is safe to swim in today is a call for the Florida Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Chateau Sur Mer Lake
These are the measurements Florida DEP publishes for Chateau Sur Mer 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 123 µg/L. TSI 74.
| 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 | 123µg/L | Poor GoodFairPoor |
| Chlorophyll-a (algae) | No reading 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. | 74 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Chateau Sur Mer Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Chateau Sur Mer Lake typically sits around 87°F at the surface in August. Summer average is about 86°F. Usually warmest in Jul (about 89°F) and coldest in Feb (about 69°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (69°F) to its warmest (89°F).
Typical surface water temperature by month, from 12 field readings (2020–2025) via the EPA Water Quality Portal. See the full Chateau Sur Mer Lake water temperature breakdown →
Stays via Stay22
Stays near Chateau Sur Mer Lake
Compare lakeside cabins, hotels, and vacation rentals near Chateau Sur Mer Lake in Lee County, Florida — 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 readings cover nutrients and algae, not lodging. Cabins and rentals around Chateau Sur Mer Lake are listed below.
Top-rated places to stay near Chateau Sur Mer Lake
Prices for Oct 16–18, 4 adults. Change dates on the map below.
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Fishing Chateau Sur Mer Lake
Water quality readings over time
2 seasons of samples on record (2020–2022). Calling a direction takes at least 4 years of the same measurement.
Phosphorus
Improving-54 µg/L/yr2 years
Nearby Lakes in Lee County
Frequently asked questions about Chateau Sur Mer Lake
Where is Chateau Sur Mer Lake?
- Chateau Sur Mer Lake is a lake in Lee County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Chateau Sur Mer Lake?
- Chateau Sur Mer Lake in Lee County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Phosphorus: 123 µg/L.
Is Chateau Sur Mer Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Chateau Sur Mer Lake?
- Chateau Sur Mer Lake typically sits around 87°F at the surface in August, from 12 EPA Water Quality Portal field readings (2020–2025). That is a typical value for the month, not a live reading.
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Where this data comes from
5 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples5 samples · 2020–2025
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.