The course, by the numbers
| Region | Illinois, United States |
|---|---|
| Holes | 18 |
| Par | 71 |
| Greens mapped | 24 |
| Elevation contours | 212 |
| Contour interval | 3-inch |
| Largest green elevation span | 4.7 ft |
| Steepest measured slope | 13.9% |
| Wind modeling | Live wind grid |
| Course data updated | 2026-07-20 |
What GolfCore has for Crystal Lake
GolfCore's library covers Crystal Lake Country Club green by green: 24 putting surfaces traced with 212 elevation contours from USGS 3DEP 1-meter lidar. The steepest measured slope on these greens tilts at 13.9 percent — the difference between a putt that dies at the hole and one that runs four feet past.
In the app, players and caddies read the same data live on the course: contour bands with fall-line arrows, wind simulated at the player's position, and pin positions that clubs on GolfCore set each morning. Crystal Lake Country Club is one of more than four thousand courses mapped across all fifty US states, Britain, and Ireland.
For clubs, the same system runs the tee sheet and the caddie yard — assignments off real tee times, SMS confirmations, and a caddie network that spans every club on the platform. Read how caddie management on GolfCore works.