Boundary Oak Golf Course
Walnut Creek, California · 18 holes · par 72 · Public. Opened 1969.
A caddie's yardage book for every hole: plays-like distance from USGS lidar elevation, reach and carry numbers for every bunker and water hazard, green front, middle and back, which way each green falls, and the lay-up zone on par 5s. Distances are from the back tees along the mapped hole; for a shorter tee, take off the scorecard difference.
Course profile
- At about 230 ft the ball carries about 0% farther than at sea level, so a 150-yard shot plays like about 150. Golfers visiting from low elevation should expect to club down.
- Biggest climb: hole 18, where the green sits 76 ft above the tee and plays about 25 yards longer.
- Biggest drop: hole 5, where the green sits 71 ft below the tee and plays about 24 yards shorter.
- Driving-zone hazards sit on the right on 5 holes and on the left on 2: a tee shot missed right costs more here.
- 17 greens tilt 2% or more. Each hole below says which side of the hole leaves an uphill putt.
Maps: tee at the bottom, green at the top. The dashed line is the mapped hole; the gold band is the lay-up zone; the arrow on the green points downhill.
Scorecard
| Hole | Par | Hcp | Black | Blue | White | Gold | Red |
|---|---|---|---|---|---|---|---|
| 1 | 4 | 6 | 424 | 405 | 396 | 382 | |
| 2 | 3 | 18 | 181 | 160 | 140 | 119 | |
| 3 | 5 | 8 | 565 | 519 | 483 | 473 | |
| 4 | 4 | 2 | 413 | 402 | 392 | 331 | |
| 5 | 5 | 12 | 520 | 503 | 470 | 424 | |
| 6 | 3 | 16 | 202 | 188 | 167 | 148 | |
| 7 | 4 | 10 | 366 | 357 | 343 | 315 | |
| 8 | 4 | 14 | 357 | 335 | 294 | 272 | |
| 9 | 4 | 4 | 417 | 391 | 373 | 332 | |
| 10 | 4 | 13 | 381 | 365 | 343 | 305 | |
| 11 | 4 | 11 | 437 | 400 | 376 | 323 | |
| 12 | 3 | 17 | 212 | 186 | 170 | 128 | |
| 13 | 4 | 9 | 436 | 415 | 393 | 355 | |
| 14 | 5 | 1 | 578 | 563 | 548 | 489 | |
| 15 | 4 | 3 | 439 | 428 | 408 | 361 | |
| 16 | 4 | 7 | 423 | 408 | 394 | 351 | |
| 17 | 3 | 15 | 220 | 200 | 185 | 146 | |
| 18 | 5 | 5 | 529 | 514 | 497 | 445 |
Tees
| Tee | Yards | Rating | Slope | |
|---|---|---|---|---|
| Black | Male | 7100 | 73.8 | 134 |
| Blue | Male | 6739 | 72.2 | 130 |
| White | Female | 6372 | 76.8 | 130 |
| White | Male | 6372 | 70.9 | 127 |
| Gold | Male | 5699 | 67.7 | 123 |
| Red | Female | 5699 | 73.3 | 124 |
Hole 1 · Par 4
- Plays like
- 414-31 ft
- Green · Black tee
- 407 · 424 · 441front · middle · back
- Green size
- 35 × 25yards deep × wide
- Fairway
- 34 ydswide at 275
- Green slope
- 4%falls to the front-left
In play
- Water across the hole: 62 to reach, 119 to carry
- Bunker front-left of the green
Playing notes
- Plays about 10 yards shorter: the green sits 31 ft below the tee.
- Water crosses the hole: 62 to reach, 119 to carry.
- No hazards mapped in the driving zone (180 to 300 yards).
- The fairway is about 34 yards wide at 275.
- The green is guarded on the left by bunkers; miss right.
- The green falls from back-right to front-left, about 4%. Finish on the front-left side of the hole for an uphill putt.
- The green is 35 yards deep: a back pin can play about 2 clubs more than a front pin.
Hole 2 · Par 3
- Plays like
- 172-27 ft
- Green · Black tee
- 174 · 181 · 191front · middle · back
- Green size
- 27 × 48yards deep × wide
- Green slope
- 3.5%falls to the left
In play
- Bunker front-left of the green
- Bunker across the hole in front of the green: 168 to carry
Playing notes
- Plays about 9 yards shorter: the green sits 27 ft below the tee.
- The green is guarded on the left by bunkers; miss right.
- Bunkers short of the green; take enough club to carry it.
- The green falls from right to left, about 3.5%. Finish on the left side of the hole for an uphill putt.
Hole 3 · Par 5
- Plays like
- 545-60 ft
- Green · Black tee
- 549 · 565 · 583front · middle · back
- Green size
- 36 × 28yards deep × wide
- Fairway
- 28 ydswide at 342
- Green slope
- 3.5%falls to the front-right
In play
- 2 bunkers across the hole: 280 to reach, 308 to carry
- Water front-right of the green
- Water front of the green
- Bunker front of the green
- Bunker left of the green
- Bunker back of the green
Playing notes
- Plays about 20 yards shorter: the green sits 60 ft below the tee.
- Dogleg left at about 348 yards.
- No hazards mapped in the driving zone (180 to 300 yards).
- The fairway is about 28 yards wide at 342 and narrows to 18 at 312.
- Best lay-up: 70 to 170 yards from the green, where the fairway is about 31 yards wide with no bunkers or water within 16 yards.
- Hazards guard both sides of the green; aim for the middle.
- Bunkers and water short of the green; take enough club to carry it.
- The green falls from back-left to front-right, about 3.5%. Finish on the front-right side of the hole for an uphill putt.
- The green is 36 yards deep: a back pin can play about 3 clubs more than a front pin.
Holes 4 to 18
4 · Par 45 · Par 56 · Par 37 · Par 48 · Par 49 · Par 410 · Par 411 · Par 412 · Par 313 · Par 414 · Par 515 · Par 416 · Par 417 · Par 318 · Par 5
The rest of this guide has the same caddie detail for every hole:
- 15 plays-like yardages
- 35 hazards with reach and carry
- 14 green slope reads
- 3 par-5 lay-up zones
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Hole maps, hazards and playing notes come from mapped course data and USGS 3DEP elevation (public domain), not a visit. Plays-like numbers use the Skitty caddie's rule of one yard per 3 ft of rise, from the longest tee; altitude uses 1.16% of carry per 1,000 ft. Tees, hazards and conditions change; check with the course before you play. Map data © OpenStreetMap contributors (ODbL 1.0) via OpenGolfAPI. Scorecard yardages and ratings as published. See a mistake? Email [email protected].