Private courtyard water feature design refers to the artistic creation and arrangement of water elements in a small, private garden. It involves selecting appropriate water features like ponds, fountains, and waterfalls, as well as considering the garden's layout, landscape architecture, and the integration of plants and stones to create a harmonious and visually appealing environment. Key aspects include choosing the right location, size, and style of water features, ensuring proper water management, and considering the environmental and aesthetic impacts.