Lake Crago
Lake Crago in Polk County, Florida has a water quality grade of D (Nutrient-rich). Water clarity: 1.6 ft visibility. Phosphorus: 81 µg/L.
- Clarity
- 1.6 ft
- Typical in June
- 86°F
- Type
- Eutrophic
- Trend
- → Stable
- Public access
- Yes
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Lake Crago →
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Lake Crago is a productive, nutrient-rich eutrophic lake in Polk County, Florida. Water quality is graded D based on 1 sampling years through 2025. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 176 other monitored lakes in Polk County, Lake Crago ranks #170 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-07-10. Grade methodology: LakeQuality 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)
Very murky, less than 1.6 ft of visibility. Phosphorus level: 81 µg/L. Trophic State Index: 69.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.6 ft | Not graded |
| Phosphorus | 81 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 69 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Lake Crago
Compare lakeside cabins, hotels, and vacation rentals near Lake Crago in Polk 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 grade measures nutrients and algae, not lodging — cabins and rentals around Lake Crago are listed below.
Top-rated places to stay near Lake Crago
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Planning a whole trip? See where to stay at Florida’s top lakes →
Water Temperature
Lake Crago typically sits around 86°F at the surface in June. Summer average is about 86°F. Usually warmest in Jun (about 86°F) and coldest in Mar (about 70°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 15 field readings (2021–2025) via the EPA Water Quality Portal. See the full Lake Crago water temperature breakdown →
Recreation & Access
- Lake Crago ParkPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Lake Crago
Water Quality Trend: → Stable
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | +0.001 m/yr | 6 |
| Phosphorus | → Stable | -1.73 µg/L/yr | 6 |
EPA Impairment Status
Lake Crago is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit FL1497D1 · Official waterbody report
County Ranking
Ranked #170 of 177 lakes in Polk County
Nearby Lakes in Polk County
Frequently asked questions about Lake Crago
Where is Lake Crago?
- Lake Crago is a lake in Polk County, Florida. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lake Crago?
- Lake Crago in Polk County, Florida has a water quality grade of D (Nutrient-rich). Water clarity: 1.6 ft visibility. Phosphorus: 81 µg/L.
Is Lake Crago safe to swim in?
- Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. Lake Crago has a water quality grade of D (Nutrient-rich). Always check local health department advisories before swimming.
What is the water temperature of Lake Crago?
- Lake Crago typically sits around 86°F at the surface in June, from 15 EPA Water Quality Portal field readings (2021–2025). That is a typical value for the month, not a live reading.
Are there boat ramps on Lake Crago?
- Lake Crago has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lake Crago Park. Public access is listed as yes.
Explore Lake Crago across LakeQuality
More Florida Lake Rankings
Other Grade D Lakes in Florida
Eutrophic Lakes in Florida
Where this data comes from
30 measurements from 1 monitoring station, 2021–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples30 samples · 2021–2025
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
Impairment status from EPA ATTAINS 303(d) database
Named boat-access points from the USGS National Boat Ramps inventory