Ice anglers should expect a good fishing season on Wyoming lakes and reservoirs this winter. But, along with the good fishing, anglers are advised to use caution while on the ice. The cold snap of early December has iced over the lakes in much of the state and good catches have already been reported on a number of waters. Ice conditions often fluctuate throughout the winter months as water levels in lakes and reservoirs change, and freezing and thawing weather patterns come and go and can contribute to unstable ice conditions. The Game and Fish advises anglers to check the thickness of any ice before venturing onto it, and continue checking it every 100 to 150 feet. Four inches of clear ice is usually safe for fishing. Clear ice is stronger than cloudy or white ice, which has frozen, thawed and refrozen and is not always stable. White ice can also be from air bubbles or frozen snow and is much weaker than clear ice. For white ice, double the recommended thickness. While the ice on rivers may appear safe, the Game and Fish Department warns to steer clear of it. The Game and Fish recommends to stay off rivers altogether as water flowing under the ice can and often does cause unsafe ice conditions.