Castle Oaks drawn from GolfCore's traced course vectors — fairways, tees, greens, bunkers and water, in the app's own colors. This is the same geometry the app maps a round on.

17Greens Mapped 147Elevation Contours 5.7%Steepest Slope 18Holes 71Par 11Rated Tees

Green contour map of Castle Oaks in Ione, California — 147 elevation contours at a 3-inch interval with fall-line arrows, traced from 1-meter lidar — One of 17 mapped greens at Castle Oaks, drawn from GolfCore's contour data baked from USGS 3DEP 1-meter lidar, in the same colors the app uses. Elevation bands run cool-low to warm-high; white lines are contours at a 3-inch interval, and dark arrows point down the fall line.

The course, by the numbers

Location	Ione, California, United States
Address	1000 Castle Oaks Drive, Ione, CA
Holes	18
Par	71
Tees on the card	11, 11 USGA-rated
Greens mapped	17
Elevation contours	147
Contour interval	3-inch
Largest green elevation span	3.1 ft
Steepest measured slope	5.7%
Course map	Traced hole by hole
Wind modeling	Live wind grid, 16 directions
Tree canopy	1-meter canopy height model
Course data updated	2026-09-01

The card

Tees

5,982 yds · Par 71 · Rating 68.8 · Slope 125

Hole	1	2	3	4	5	6	7	8	9	Out
Par	5	3	4	4	5	4	4	3	4	36
Yards	540	159	385	339	488	340	388	171	355	3,165
Hcp	3	7	5	15	9	17	1	13	11

Hole	10	11	12	13	14	15	16	17	18	In
Par	4	3	4	5	4	4	3	4	4	35
Yards	362	126	318	492	305	345	109	369	391	2,817
Hcp	4	18	14	10	12	8	16	6	2

Total71 Yards5,982

Hole	Par	Yards	Hcp
1	5	540	3
2	3	159	7
3	4	385	5
4	4	339	15
5	5	488	9
6	4	340	17
7	4	388	1
8	3	171	13
9	4	355	11
Out	36	3,165
10	4	362	4
11	3	126	18
12	4	318	14
13	5	492	10
14	4	305	12
15	4	345	8
16	3	109	16
17	4	369	6
18	4	391	2
In	35	2,817
Total	71	5,982

Course rating and slope

Tee	Yards	Par	Rating / Slope
Black	6,746	71	72.5 / 132
Blue	6,381	71	70.6 / 128 76.4 / 135 (W)
Blue/White Combo	6,181	71	69.9 / 126 75.3 / 131 (W)
White	5,982	72	68.8 / 125 74.3 / 128 (W)
Gold	5,450	72	66.6 / 114 71.4 / 122 (W)
Red	5,017	72	64.7 / 108 69.2 / 116 (W)

Hole data is what GolfCore holds for the course's layout. Picking a tee shows that tee's own yardages, pars and stroke indexes where the club has rated them. Clubs correct their own data in the app.

What GolfCore has for Castle Oaks

GolfCore's library covers Castle Oaks GC green by green: 17 putting surfaces traced with 147 elevation contours from USGS 3DEP 1-meter lidar. The steepest measured slope on these greens tilts at 5.7 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. Castle Oaks GC is one of more than six thousand courses GolfCore has mapped green by green.

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.

Courses nearby

Staff at Castle Oaks can claim this course by signing in with an email address at the club's own domain. That sets the club up on GolfCore with you as an administrator.

GolfCore maps courses from public elevation data and is not affiliated with or endorsed by Castle Oaks. Represent this club? Request changes or removal through our contact page.