Twin Lake W Shore
Twin Lake W Shore in Polk County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 21 µg/L.
- Typical in July
- 86°F
- Trend
- ↓ Declining
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Why Twin Lake W Shore has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Twin Lake W Shore, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded phosphorus, but not water clarity and algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by FDEP and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Twin Lake W Shore is a lake in Polk County, Florida. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2020-07-06. Grade methodology: LakeQuality methodology.
Watch Twin Lake W Shore water quality
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Twin Lake W Shore
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Phosphorus level: 21 µg/L. Trophic State Index: 48.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 21 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 48 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Twin Lake W Shore
Compare lakeside cabins, hotels, and vacation rentals near Twin Lake W Shore 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 Twin Lake W Shore
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 Florida’s top lakes →
Water Temperature
Twin Lake W Shore typically sits around 86°F at the surface in July. Summer average is about 86°F. Usually warmest in Jul (about 86°F) and coldest in Jan (about 68°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 16 field readings (2014–2020) via the EPA Water Quality Portal. See the full Twin Lake W Shore water temperature breakdown →
Fishing Twin Lake W Shore
Water Quality Trend: ↓ Declining
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.171 m/yr | 6 |
| Phosphorus | ↓ Declining | +6.97 µg/L/yr | 6 |
EPA Impairment Status
Twin Lake W Shore 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 FL1617A · Official waterbody report · Matched by proximity (1.95 km)
Graded lakes near Twin Lake W Shore
Twin Lake W Shore has no grade, but these lakes within a short drive do.
Nearby Lakes in Polk County
Frequently asked questions about Twin Lake W Shore
Where is Twin Lake W Shore?
- Twin Lake W Shore is a lake in Polk County, Florida. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Twin Lake W Shore?
- Twin Lake W Shore in Polk County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 21 µg/L.
Is Twin Lake W Shore safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Twin Lake W Shore is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
What is the water temperature of Twin Lake W Shore?
- Twin Lake W Shore typically sits around 86°F at the surface in July, from 16 EPA Water Quality Portal field readings (2014–2020). That is a typical value for the month, not a live reading.
Explore Twin Lake W Shore across LakeQuality
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Where this data comes from
3 measurements from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples3 samples · 2020
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