Troost Lake
Troost Lake in Jackson County, Missouri has a water quality grade of F (Algae-prone). Phosphorus: 120.5 µg/L. Chlorophyll-a (algae): 75.3 µg/L.
- Typical in August
- 82°F
- Type
- Hypereutrophic
- Trend
- ↓ Declining
Grade F measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Troost Lake →
Next lake in Jackson County
Swipe left or right on this bar to open the next or previous lake.
Troost Lake is a highly nutrient-loaded hypereutrophic lake in Jackson County, Missouri. Water quality is graded F based on 2 sampling years through 2024. Overall water quality is declining over recent sampling years. Compared to the 22 other monitored lakes in Jackson County, Troost Lake ranks #15 for water quality.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2024-09-14. Grade methodology: LakeGrade methodology.
Watch Troost Lake water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Grade onlyAlgae risk
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.
Algae and nutrients are often high — check current advisories before swimming. Skip the water if you see scum or a paint-like bloom
Water Quality Grade: F (Algae-prone)
No clarity data. Phosphorus level: 120.5 µg/L. Chlorophyll-a: 75.3 µg/L. Trophic State Index: 73.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 120.5 µg/L | Poor |
| Chlorophyll-a (Algae) | 75.3 µg/L | Poor |
| Trophic State Index (TSI) | 73 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Troost Lake
Compare lakeside cabins, hotels, and vacation rentals near Troost Lake in Jackson County, Missouri — 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 Troost Lake are listed below.
Top-rated places to stay near Troost Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Missouri’s top lakes →
Water Temperature
Troost Lake typically sits around 82°F at the surface in August. Summer average is about 82°F. Usually warmest in Jul (about 84°F) and coldest in May (about 72°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 30 field readings (2013–2024) via the EPA Water Quality Portal.
Fishing Troost Lake
Water Quality Trend: ↓ Declining
Based on 4 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | ↓ Declining | +15.99 µg/L/yr | 4 |
| Chlorophyll-a | ↓ Declining | +5.33 µg/L/yr | 4 |
County Ranking
Ranked #15 of 23 lakes in Jackson County
Nearby Lakes in Jackson County
Frequently asked questions about Troost Lake
Where is Troost Lake?
- Troost Lake is a lake in Jackson County, Missouri. LakeQuality grades it F for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Troost Lake?
- Troost Lake in Jackson County, Missouri has a water quality grade of F (Algae-prone). Phosphorus: 120.5 µg/L. Chlorophyll-a (algae): 75.3 µg/L.
Is Troost Lake safe to swim in?
- Algae and nutrients are often high — check current advisories before swimming. Skip the water if you see scum or a paint-like bloom. Troost Lake has a water quality grade of F (Algae-prone). Algae concentration (chlorophyll-a) is 75.3 µg/L. Always check local health department advisories before swimming.
What is the water temperature of Troost Lake?
- Troost Lake typically sits around 82°F at the surface in August, from 30 EPA Water Quality Portal field readings (2013–2024). That is a typical value for the month, not a live reading.
Explore Troost Lake across LakeGrade
Species activity outlook by water temperature and season
Where to stay at Missouri's top lakes, each with its grade
Very high nutrients, dense algae, poor clarity
Missouri's cleanest and most-polluted lakes, ranked
More Missouri Lake Rankings
Other Grade F Lakes in Missouri
Hypereutrophic Lakes in Missouri
Where this data comes from
43 measurements from 1 monitoring station, 2022–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Univ. of Missouri, Columbia
UMC43 samples · 2022–2024
Analytical methods
- 4500 P E ~ Phosphorus in Water by Colorimetry- Ascorbic Acid Method
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
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.