Ohio Nowcast.
Welcome to the Ohio Nowcast for Edgewater

Edgewater WebcamEdgewater is part of Lakefront Reservation, operated by Cleveland Metroparks. The nowcast has been used at Edgewater since 2008.

The information on this page is updated by the Northeast Ohio Regional Sewer District by 11:00 AM (EDT) every day during the swimming season. This nowcast issues advisories and predicts the probability once a day at the posted time only. Storms are likely to result in a quick change in water quality.

 

Beach
Date / time
Beach Advisory Information

Edgewater

9/1/2014   6:48:00 AM
A swimming advisory is NOT in effect at this time
 
Beach
Date / time

Predicted E. coli from qPCR (CEU / 100 mL) or probability (%)

Water temperature (degrees F)
Wave height (feet)
Predicted water quality
Edgewater
9/1/2014   6:48:00 AM
6.76% probability

73.04

0.083
Good
 
Beach
Date
Culture method (MPN / 100 mL)
Edgewater
9/1/2014
Edgewater
8/31/2014
38
Edgewater
8/30/2014
54
 

CEU: Cell equivalent units
RP: Results pending
NS: No sample collected on this date.

Variables used in the Edgewater nowcast models

Results from a rapid analytical method for E. coli—quantitative polymerase chain reaction (qPCR)—are used to provide water-quality advisory information at Edgewater. A standard curve is created by analyzing known quantities of E. coli by culture and qPCR; daily sample values are then extrapolated from the standard curve. If results indicate inhibition of qPCR or results for qPCR are not available for any other reason, a backup model is used (table below). To determine inhibition, a known amount of salmon DNA is added to an aliquot of the environmental sample and to a negative control sample. If the difference in Ct values between the two samples is greater than 2, the sample is considered inhibited.

 

Variables used in the backup model for Edgewater

 

Model information

Explanatory variables

Edgewater 2005-13

 

Backup model when qPCR results are not available

 

Threshold probability = 37%

         Wave height

         Turbidity

         Water pH, field

         Rainfall in the past 24 hours, Hopkins International Airport

         Day of the year

 

View seasonal data on E. coli concentrations and water quality.

Data Upload (restricted access)
For comments or changes regarding this Web page, please contact:
Donna Francy, USGS Ohio Water Science Center, 6480 Doubletree Avenue, Columbus, OH 43229; Phone: (614) 430-7769