The IWSF site provides an official slalom course diagram. The site of Canadian Water Ski also provides an online visual graph of a slalom course.
USA Waterski also has a chart with diagram - Official Slalom Course Dimensions.
Slalom Waterski Course Dimensions
| Description | Dimension | Range | |
| Total Length | 849' 8 7/8" | 847' 7 38" - 851' 10 3/8" | |
| Starting Gate to Ball 1 | 88' 7" | 88' 1 5/8" - 89' 1/4" | |
| Ball 1 to Ball 2 Gates | 134' 6 1/8" | 133' 10 1/8" - 135' 2 1/4" | |
| Center of Entrance Gate to Ball 1 | 96' 3 3/8" | 95' 9 5/8" - 96' 9 1/8" | |
| Ball 2 to Ball 3 Diagonal | 154' 2 3/4" | 153" 5 3/8" - 155' 1/8" | |
| Entrance Gate, Center of Course to Ball 4 | 4" 1 1/4" | 3' 10 3/4" - 4' 3 3/4" | |
| Center Line of Course to Turn Ball | 37' 8 3/4" | 37' 4 1/4" - 38' 1 3/8" | |
| Center Line of Course to Boat Gates | 3' 9 1/4" | 3' 4 3/4" - 4' 1 3/4" | |
| 55 Meter Buoys | 180' 5 3/8" | 179' 6 1/2" - 181' 4 1/4" | |