St. Lucie County · Treasure Coast · Atlantic Coast
Should you swim at Frederick Douglass Beach after rain?
This page is built for the day when a beach looks tempting but recent rain makes the normal badge harder to trust.
Current picture
GOOD on the latest sample at 10 CFU/100mL.
Long-term context
2 poor samples and 3 non-good samples in the displayed history.
Rain still matters
Stormwater can make this page stale faster than the normal testing schedule, especially after heavy rain.
Wait window
72 hours
Use that as the default buffer after heavy rain before trusting routine samples too much.
Latest poor sample
November 30, 2025
A recent poor sample is a stronger reason to be conservative after runoff.
Long-term spike risk
17%
Lower is better when weather makes your same-day decision harder.
Lower-Risk Nearby Options After Rain
Rain guide →Fort Pierce Inlet State Park Beach
St. Lucie County · Atlantic Coast · 2 mi away
No poor samples in the displayed history · risk 0%
Vero Beach
Indian River County · Atlantic Coast · 15 mi away
No poor samples in the displayed history · risk 0%
Jensen Beach
Martin County · Atlantic Coast · 16 mi away
No poor samples in the displayed history · risk 0%
Jaycee Beach Park
Indian River County · Atlantic Coast · 14 mi away
Last poor sample Oct 31 · risk 8%
Bathtub Reef Beach
Martin County · Atlantic Coast · 22 mi away
Last poor sample Nov 15 · risk 8%
Hobe Sound Beach
Martin County · Atlantic Coast · 28 mi away
Last poor sample Nov 30 · risk 8%
Water Quality History — Last 12 Months
Values in CFU/100mL. Green = Good (≤35.4), Yellow = Moderate (35.5–70.4), Red = Poor (≥70.5)
Recent Warning-Sign Samples
Full history →December 15, 2025
64 CFU/100mL · MODERATE
November 30, 2025
109 CFU/100mL · POOR
October 1, 2025
115 CFU/100mL · POOR
Keep Exploring Nearby
How To Use This Page
This page is built for the day when a beach looks tempting but recent rain makes the normal badge harder to trust.
Use this view as a decision aid, not a guarantee. The latest sample, visible runoff, and recent weather still matter more than any single list or chart.
If you want the main same-day answer instead, go back to the Frederick Douglass Beach beach page.
Data from FL DOH Healthy Beaches Program. This is an independent project — check with Florida DOH for official conditions.