$3\mathrm{.}2$ EThekwini Water is expanding its operations and needs to manage various types of water resources, including rivers, lakes, and reservoirs. Design a Java class hierarchy to represent these water resources, with appropriate methods to calculate the total volume and average depth of each type of water resource.

Include a base class called WaterResource, which contains common properties and methods shared by all types of water resources. Derive subclasses for specific types of water resources, such as River, Lake, and Reservoir, each with unique properties and methods tailored to its characteristics.

Implement polymorphic behaviour by overriding appropriate methods, such as calculateTotalVolume$()$ and calculateAverageDepth$(),$ in each subclass to reflect the specific calculations required for that type of water resource.

In your solution, ensure that each class provides methods for setting and getting relevant properties, as well as any necessary validation or error handling. $-$ JAVA LANGUAGE