We had no problem finding the Daytona International complex on our maps andsatellite imagery, but we're not familiar with all of its components and their layout,so we were at a loss to select the best point to represent the speedway's locationas a whole.We chose the north(west) corner of Lake Lloyd as an easily recognizable point,and we hope it suits the questioner's purpose. That corner of the rectangular lakeis located at29.18817° north latitude81.06534° west longitude.Other places on the Speedway grounds will have slightly different coordinates.
This is somewhat coplicated besides cold weather. Water reaches its maximum density at thirty-nine degrees (F). Then the water sinks and "turns over" and the process is repeated until the temperature is a homogenius 39, then the top layer cools and eventuall freezes. Deep lake take much longer to freeze, if at all (Lake Tahoe) for example. That's why shallow lakes freeze quicker and the ice is thicker. Salinity also plays a part...salt Walter freezing point averages 28 degrees (F)