Water Quality > Tributary and Waterfront Data > Rondout Creek > Alligerville- Route 6 Bridge swimming hole

Alligerville- Route 6 Bridge swimming hole

Physical/Chemical Data

Physical, chemical and biological properties of the surface water that are measured continuously while the patrol boat is underway.

Entero Count (fecal indicator) and Rainfall

36 Samples taken

Sample Date [i] Enterococcus Count

Entero Count

Enterococcus (“Entero”) is a fecal indicating bacterium that lives in the intestines of humans and other warm-blooded animals. It is the EPA preferred indicator for sewage contamination.

QualityRain, day of (in)Prior Day2 Days Prior3 Days Prior Rain4 Days Total Rain
SortSortSortSortSortSortSortSort
10/14/2017276Beach Advisory0.00.00.00.00.1
09/09/20171414Beach Advisory0.00.00.10.50.6
08/12/2017>2420Beach Advisory0.51.00.00.01.5
07/08/2017479Beach Advisory0.00.30.00.00.3
06/10/201775Beach Advisory0.00.00.00.00.0
05/13/201718Acceptable0.10.00.00.00.1
10/15/201655Acceptable0.00.00.00.00.0
09/17/2016687Beach Advisory0.00.00.00.00.0
08/20/2016866Beach Advisory0.00.00.20.00.2
07/16/2016148Beach Advisory0.00.00.50.00.5
06/18/201691Beach Advisory0.00.00.00.00.0
05/21/201672Beach Advisory0.00.00.00.00.0
10/31/2015228Beach Advisory0.00.00.00.00.0
09/26/201537Acceptable0.00.00.00.00.0
08/29/201551Acceptable0.00.00.00.00.0
07/25/201527Acceptable0.00.00.00.00.0
06/27/2015365Beach Advisory0.00.00.00.00.0
05/30/201550Acceptable0.00.00.00.30.3
11/01/201455Acceptable0.00.00.00.00.0
09/27/2014192Beach Advisory0.00.00.00.00.0
08/30/201496Beach Advisory0.00.00.00.00.0
07/26/2014345Beach Advisory0.00.00.00.00.0
06/28/201430Acceptable0.00.00.00.00.0
05/31/201448Acceptable0.00.00.00.00.0
10/26/201333Acceptable0.00.00.00.00.0
09/28/201315Acceptable0.00.00.00.00.0
08/24/201315Acceptable0.00.10.00.00.1
07/27/2013173Beach Advisory0.00.00.00.00.0
06/29/20131414Beach Advisory0.00.50.70.01.3
06/08/2013>2420Beach Advisory0.32.00.10.02.5
10/27/2012167Beach Advisory0.00.00.00.00.0
09/29/20121541Beach Advisory0.21.70.00.12.0
09/01/2012411Beach Advisory0.00.00.00.00.0
07/28/2012204Beach Advisory0.70.00.60.01.3
06/30/201210Acceptable0.00.00.00.00.0
05/26/201249Acceptable0.00.00.00.00.1

Entero Count (fecal indicator) and Rainfall Correlation

36 Samples taken

Water Quality*

Acceptable (0–60) Beach Advisory (61+)

*Single sample thresholds;
Enterococcus count per 100mL

Prior Four Day Rainfall
(in inches)

Dry Weather (0–0.25) Wet Weather (0.25+)

Enterococcus is an EPA-approved fecal contamination indicator.

Samples taken by citizen scientists trained by Riverkeeper, and processed on the Riverkeeper vessel, according to the 2014 Quality Assurance Project Plan.

Rainfall data comes from wunderground.com. Wet weather is a common trigger of fecal contamination.

What do the Numbers Mean?

Water Quality scoring is based on the 2012 Recreational Water Quality Criteria from the US Environmental Protection Agency (EPA) for safe swimming. Learn More

About this location:

This swimming hole is located just downstream of the point where Peters Kill joins the Rondout after flowing through Minnewaska State Park.

Agencies Responsible:

Ulster County Dept. of Health: 845-340-3010; NYSDEC Region 3: 845-256-3000

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