Old Lake Davenport
Polk County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Old Lake Davenport. Here is what has been measured.
- Eutrophic
- Public access
- Limited data
Old Lake Davenport in Polk County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 4.3 ft visibility. Phosphorus: 22 µg/L.
Old Lake Davenport is a productive, nutrient-rich eutrophic lake in Polk County, Florida. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 176 other monitored lakes in Polk County, Old Lake Davenport ranks #101 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2023-09-18. Methodology: how these readings are compared.
What Old Lake Davenport is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
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 Old Lake Davenport 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 Old Lake Davenport
These are the measurements Florida DEP publishes for Old Lake Davenport, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 4.3 ft. Phosphorus 22 µg/L. TSI 52.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 4.3ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 22µg/L | Good 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. | 52 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Old Lake Davenport
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Old Lake Davenport typically sits around 90°F at the surface in August. Summer average is about 88°F. Usually warmest in Aug (about 90°F) and coldest in Apr (about 75°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (75°F) to its warmest (90°F).
Typical surface water temperature by month, from 9 field readings (2016–2023) via the EPA Water Quality Portal. See the full Old Lake Davenport water temperature breakdown →
Recreation & Access
- Polk County Northeast Regional ParkPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Old Lake Davenport
Compare lakeside cabins, hotels, and vacation rentals near Old Lake Davenport 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.
Top-rated places to stay near Old Lake Davenport
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Fishing Old Lake Davenport
Water Quality Trend: Worsening
Based on 6 years of monitoring (2020–2025).
Water clarity
Worsening6 years
Phosphorus
Worsening+0.91 µg/L/yr6 years
Nearby Lakes in Polk County
Frequently asked questions about Old Lake Davenport
Where is Old Lake Davenport?
- Old Lake Davenport is a lake in Polk County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Old Lake Davenport?
- Old Lake Davenport in Polk County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 4.3 ft visibility. Phosphorus: 22 µg/L.
Is Old Lake Davenport 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 Old Lake Davenport?
- Old Lake Davenport typically sits around 90°F at the surface in August, from 9 EPA Water Quality Portal field readings (2016–2023). That is a typical value for the month, not a live reading.
Are there boat ramps on Old Lake Davenport?
- Old Lake Davenport has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Polk County Northeast Regional Park. Public access is listed as yes.
Can I fish at Old Lake Davenport?
- Old Lake Davenport has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Florida's fish and wildlife agency, so check its current regulations before you go.
Explore Old Lake Davenport across LakeQuality
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Where this data comes from
14 measurements from 1 monitoring station, 2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples14 samples · 2023
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.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory