Yes, an ATV or UTV snow plow can handle heavy, wet snow, but there are several factors to consider for optimal performance. 
1. **Power and Engine Size**: ATVs and UTVs with larger engines (500cc and above) are better suited for plowing heavy, wet snow. They provide the necessary power and torque to push through dense snow without overstraining the engine.
2. **Plow Blade Size and Material**: A wider and robust plow blade, typically made of steel, is more effective in handling heavy snow. Adjustable blades that can angle left or right help in directing the snow efficiently.
3. **Weight and Traction**: Adding weight to the ATV or UTV, such as sandbags, can improve traction. Chains on the tires can also enhance grip, preventing slippage on icy surfaces.
4. **Winch System**: A reliable winch system is crucial for lifting and lowering the plow blade, especially when dealing with heavy snow. Ensure the winch is rated for the weight of the plow and snow.
5. **Speed and Technique**: Operating at a moderate speed and using a gradual approach to plowing can prevent the machine from bogging down. It's often effective to plow in layers, removing the top layer first before tackling the bottom.
6. **Maintenance and Upkeep**: Regular maintenance of the ATV or UTV, including checking the engine, tires, and plow attachment, ensures it remains in good working condition to handle heavy snow.
While ATVs and UTVs can manage heavy, wet snow, they may not be as effective as larger vehicles like trucks with plows for extremely deep or compacted snow. However, with the right setup and technique, they can be a practical solution for residential and light commercial snow removal tasks.