Also, check the county travel status map which is updated by each county EMA office in Indiana to reflect each county's travel conditions. http://www.in.gov/dhs/traveladvisory/ There is also a mobile app for this map (Travel Advisory) which can provide a notification when counties that you are interested in change their status.-----
Otter Springs is a second-magnitude natural spring with a near-constant temperature of 73 degrees and 10 million gallons of sparkling pure water flowing daily into the Suwannee River. The spring is surrounded by a 636-acre park and campground managed by Gilchrist County.
For example, the brook, brown and rainbows that inhabit Big Spring Creek in Cumberland County, Pennsylvania (a limestone spring creek) for the most part live their entire lives in water temperature from 46 to 50 f. The trout's metabolism in these waters is geared to these temperatures and the trout grow all year round. Take the same temperature and move a few miles away to a freestone stream and those trout are barely active in such cold water! So how does a fly angler ascertain which temperatures are best.