Realistic 4K Waterfall Animation

I need a realistic waterfall animation for a presentation/slideshow.

Requirements:
- Realistic waterfall animation
- 4K resolution (3840x2160)
- Suitable for use in presentations/slideshows

Ideal skills and experience:
- Proficiency in animation software
- Experience in creating realistic animations
- Attention to detail and high-quality output

Please provide samples of previous work.