Tirau Golf Club
Waikato · 18 greens mapped
Read these greens →
The greens here
18 greens at Tirau have been mapped from the national LiDAR survey — 6,233 m² of putting surface altogether, with a median green of 344 m². The national median is 397 m², so these run 13% smaller than average.
- Steepest green: hole 4, averaging 5.9% and falling west.
- Flattest green: hole 9, at 1.8%.
- Most internal fall: hole 4, 1.67 m between its low and high point.
- Largest green: hole 4, 463 m².
Every green
| Green | Size | Fall | Avg grade | Runs off to the |
|---|---|---|---|---|
| Hole 1 | 329 m² | 0.98 m | 4.9% | east |
| Hole 2 | 412 m² | 1.33 m | 5.5% | north-east |
| Hole 3 | 348 m² | 0.88 m | 4.6% | east |
| Hole 4 | 463 m² | 1.67 m | 5.9% | west |
| Hole 5 | 349 m² | 1.00 m | 4.0% | west |
| Hole 6 | 293 m² | 1.11 m | 4.8% | south-east |
| Hole 7 | 364 m² | 0.65 m | 2.4% | south-west |
| Hole 8 | 334 m² | 0.89 m | 2.9% | south-west |
| Hole 9 | 243 m² | 0.42 m | 1.8% | west |
| Hole 10 | 340 m² | 0.74 m | 3.8% | north |
| Hole 11 | 300 m² | 0.67 m | 4.2% | east |
| Hole 12 | 434 m² | 1.11 m | 3.8% | north |
| Hole 13 | 404 m² | 1.13 m | 4.7% | north-east |
| Hole 14 | 348 m² | 0.93 m | 4.1% | south |
| Hole 15 | 433 m² | 0.83 m | 2.9% | north-east |
| Hole 16 | 316 m² | 0.67 m | 3.1% | south |
| Hole 17 | 288 m² | 0.58 m | 2.2% | east |
| Hole 18 | 237 m² | 0.57 m | 3.0% | west |
“Fall” is the height difference between the lowest and highest point of the putting surface. “Avg grade” is the best-fit plane across it — a green can average 2% and still have a shelf on it, which is what the app shows and a table cannot.
Where these numbers come from
Heights come from Land Information New Zealand’s 1 m LiDAR elevation survey (Waikato, 2021), published openly under CC BY 4.0. Green outlines and hole numbers come from OpenStreetMap under the Open Database Licence. Slope uncertainty on this course works out at ±0.15%.
Slope is measured. Break is modelled — the read in the app is a physics simulation of a ball rolling over the measured surface, and it knows nothing about grain or moisture. The survey predates any green rebuilt since 2021. More about how this is made.