Hillsborough County·Tampa Bay Area·Gulf Coast
Should you swim at Davis Islands 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 8 CFU/100mL.
Recent-sample context
1 poor samples and 4 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
October 7, 2026
A recent poor sample is a stronger reason to be conservative after runoff.
Displayed-sample spike risk
8%
Lower is better when weather makes your same-day decision harder.
Lower-Risk Nearby Options After Rain
Rain guide →Ben T. Davis Beach
Hillsborough County · Gulf Coast · 6 mi away
No poor samples in the displayed history · risk 0%
Picnic Island Beach
Hillsborough County · Gulf Coast · 7 mi away
No poor samples in the displayed history · risk 0%
St. Pete Beach
Pinellas County · Gulf Coast · 22 mi away
Nearby-station context from PASS-A-GRILLE BEACH, about 1.9 mi away; not an exact-beach sample.
Nearby-station data · No poor samples in the displayed history · risk 0%
Sand Key Beach
Pinellas County · Gulf Coast · 22 mi away
No poor samples in the displayed history · risk 0%
Treasure Island Beach
Pinellas County · Gulf Coast · 21 mi away
Nearby-station context from MADEIRA BEACH, about 3.5 mi away; not an exact-beach sample.
Nearby-station data · Last poor sample May 26 · risk 8%
Madeira Beach
Pinellas County · Gulf Coast · 22 mi away
Last poor sample May 26 · risk 8%
Water Quality History — Latest Samples
Sample source: Davis Islands Beach
Values in CFU/100mL. Green = Good (≤35.4), Yellow = Moderate (35.5–70.4), Red = Poor (≥70.5)
Recent Warning-Sign Samples
Full history →October 7, 2026
120 CFU/100mL · POOR
September 30, 2026
52 CFU/100mL · MODERATE
August 26, 2026
40 CFU/100mL · MODERATE
August 6, 2026
40 CFU/100mL · MODERATE
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 Davis Islands Beach beach page.
Data from FL DOH Healthy Beaches Program. This is an independent project, not official real-time clearance — check with Florida DOH for official conditions.