Nassau County · Northeast Florida · Atlantic Coast

Fort Clinch State Park Beach Water Quality

GOOD

Water quality is GOOD — Safe for swimming

The most recent test at Fort Clinch State Park Beach showed enterococcus bacteria levels of 16 CFU/100mL, which is well within the safe range (35.4 or below CFU/100mL). Conditions are considered safe for swimming and water activities.

Tested: Sunday, March 15, 2026
Reading: 16 CFU/100mL
Risk Rating: 17% poor results

Historical Risk Rating

17%

Fort Clinch State Park Beach has an acceptable track record, though 17% of recent tests showed elevated bacteria levels.

Water Quality History — Last 12 Months

35.4
70.5
13
Oct
14
Oct
12
Oct
18
Nov
18
Nov
17
Dec
14
Dec
14
Jan
14
Jan
94
Feb
105
Feb
16
Mar

Values in CFU/100mL. Green = Good (≤35.4), Yellow = Moderate (35.5–70.4), Red = Poor (≥70.5)

Swimming After Rain

Rainfall can wash bacteria, fertilizers, and other pollutants into the ocean through stormwater runoff. The Florida DOH recommends waiting at least 72 hours after heavy rain before swimming, especially near inlets, canals, and river mouths. If it has rained recently in the Nassau County area, use extra caution.

About Fort Clinch State Park Beach

A historic state park on the northern tip of Amelia Island, Fort Clinch offers beautiful beaches, a Civil War-era fort, and camping.

Nassau County Northeast Florida Atlantic Coast

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Learn More

Is It Safe to Swim After Rain?

Wait times, risk areas, and tips

Understanding Advisories

What the numbers and badges mean

Cleanest Beaches in Florida

Water quality rankings

How Bacteria Testing Works

CFU, sampling, and lab methods

Disclaimer: Water quality data is sourced from the Florida Department of Health Healthy Beaches Program. Conditions can change rapidly. This website provides informational estimates only — always check with Florida DOH for official, real-time beach conditions. Safe to Swim Florida is an independent project and is not affiliated with any government agency.