Ohio Nowcast.
Welcome to the Ohio Nowcast for Mentor Headlands

Mentor Headlands Mentor Headlands is operated by Ohio Department of Natural Resources and monitored by the Lake County General Health District.  This is the first year of the nowcast at Mentor Headlands.

The information on this page is updated by Lake County General Health District by 10:30 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.

For futher information, contact Dan Lark (dlark@lcghd.org).

See you next year...

Date / time
Beach Advisory Information

Mentor Headlands

9/7/2015   8:30:00 AM
A swimming advisory is NOT in effect at this time
Date / time

Probability that E. coli exceeds the  safe level (percent)

Water temperature (degrees F)
Predicted water quality
Mentor Headlands
9/7/2015   8:30:00 AM


Culture method (MPN / 100 mL)
Mentor Headlands
Mentor Headlands
Mentor Headlands

RP: Results pending
NS: No sample collected on this date.

Variables used in the Mentor Headlands nowcast models

The variables below will be used in a model to predict the probability of exceeding the E. coli bathing-water standard of 235 most-probable number/100 mL (MPN/100 mL). If the probability exceeds the established threshold (25%), the beach is posted with a swimming advisory.

Mentor Headlands nowcast model―2015

Model information

Explanatory variables

Mentor Headlands 2012-14

Threshold probability = 25%

         Water temperature


         Wave height

         Birds counted at the time of sampling

The USGS operates a weather station at Mentor Headlands to measure wind speed, wind direction, barometric pressure, air temperature, net solar radiation, incident light, and rainfall. The name and identification number for the weather station is as follows:

Weather station near Headlands State Park OH, 414514081175500


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