The Colorado WaterWise Council says Xeriscaping is a combination of seven common-sense gardening principles that conserve water while creating a lush and colorful landscape environment, check out the links to their website below. Although this organization appears to target mostly homes and business, the same principles can be used in planning landscaping at golf courses.
Plan and Design
Practical Turf Areas
Select and Group Plants Appropriately
Improve the Soil
Maintain the Landscape
Here are a few more xeriscaping and efficient irrigation resources courtesy of Colorado WaterWise Council.