Average Temperature All Lakes 1990-2014

Water temperature (measure of heat energy) is a major regulator of physical, chemical, and biological processes occurring in lakes. The unique temperature-related properties of water, including its high specific heat, high latent heat of vaporization, and particular density-temperature relationships govern all life processes. Temperature not only plays a critical role in determining the types of aquatic life that can survive in a lake, but strongly influences spawning times, metamorphosis, and migration and it also controls the reproduction, growth, and development rates of all aquatic species. In general, warmer water temperatures accelerate living processes (chemical and biological reactions double for every 10°C [18°F] increase in temperature), while cooler temperatures suppress these processes.