Coverage
Zomma Golf holds 12,437 golf courses across all 50 states and Washington, DC, and they are not all built to the same depth.
6,885 are fully mapped, 925 have some of their holes drawn, 12 have every hole predicted from aerial imagery and fewer greens than holes, 1,799 have the property outline and no holes traced yet, and the other 2,816 have a scorecard and no map yet. This page counts exactly what is there.
Every page on this site renders only what we hold — no placeholder, no estimate standing in for a figure nobody published. That is the right way round for a reader and it makes a gap invisible, so each course, club and shaft page now carries a short panel saying which parts of it are built and which are not. This is the same count over the whole database.
The site is in beta. The database is still being built and it grows on most days, so a page that looks thin today is a record nobody has got to yet — not a course we know nothing about.
courses
| What | Built | Partly | Outline only | Share |
|---|---|---|---|---|
| Scorecard — par and yardage per hole | 12,034 | 97% | ||
| Course rating and slope | 9,435 | 76% | ||
| Course map | 6,885 | 937 | 1,799 | 55% |
| Measured per-hole distances | 6,860 | 534 | 55% | |
| Green contours | 383 | 264 | 3% |
clubs
| What | Built | Partly | Outline only | Share |
|---|---|---|---|---|
| The maker's own spec sheet | 29 | 2,393 | 1% | |
| Published loft and lie options | 4,297 | 100% | ||
| Stock shaft resolved, or none published | 4,278 | 19 | 100% |
shafts
| What | Built | Partly | Outline only | Share |
|---|---|---|---|---|
| The maker's own spec sheet | 14 | 856 | 2% | |
| Flex options with a published weight | 846 | 91% | ||
| Launch, spin and torque | 664 | 16 | 71% |
Why a gap is a gap
On a course, it is usually ours. A course gets a map when its holes have been traced in OpenStreetMap and we have imported them, or, on 1,406 courses OpenStreetMap never mapped, when a model has predicted every hole from aerial imagery; it gets green contours when public LiDAR over that ground is detailed enough to measure a green to half a foot. Neither happens by itself, and we are working through the country. The one exception is a survey too coarse to measure — that gap is not waiting on us, and the course page says so rather than promising a date.
On a club or a shaft, it is usually the maker's. Manufacturers publish different specs from one another and from one model to the next: a blank in a spec table is almost always a figure they never listed, and the page names them rather than us. What we count above is the part that is ours — whether we have found and read their own spec sheet.
Nothing is ever filled in with a guess. Every figure on this site comes from a source we can name and link, or the page says it is not published. That is why a gap stays a gap until somebody finds where the answer was published.
You can close one
Every course and club page carries a short form at the foot for exactly this. The most useful thing anybody sends is a link — one scorecard URL fills in eighteen pars and eighteen yardages at once, and one spec-sheet URL fills a whole club's table. We don't ask anyone to retype a table, because a retyped number has no source behind it and we would not publish it. Nothing sent is published as it stands; somebody checks it against the page you cite first.