There are an endless amount of websites, articles, and resources that describe the water cycle. What is unique about this site is that it describes why the water cycle is important and necessary for the environment and all living organisms. Students tend to become more engaged and motivated to learn when they know how new material is relevant to them or why the information is important. Therefore, this website provides teachers of students (grade 3-5) learning about the water-cycle access to information that is likely to help engage their students and motivate them to learn. This website also goes into more detail about the water cycle, including the different types. This information is also useful if teachers want to learn more about the topic than what they need to teach.
Here is a link to the website.