Dunes Island 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.

19Greens Mapped 169Elevation Contours 6.9%Steepest Slope 18Holes 70Par 12Rated Tees

Green contour map of Dunes Island in Sanibel Island, Florida — 169 elevation contours at a 3-inch interval with fall-line arrows, traced from 1-meter lidar — One of 19 mapped greens at Dunes Island, 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	Sanibel Island, Florida, United States
Address	949 Sand Castle Road, Sanibel Island, FL
Phone	(239) 472-2535
Website	sanibeldunesresort.com
Holes	18
Par	70
Tees on the card	12, 12 USGA-rated
Greens mapped	19
Elevation contours	169
Contour interval	3-inch
Largest green elevation span	3.9 ft
Steepest measured slope	6.9%
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

4,913 yds · Par 70 · Rating 64.0 · Slope 111

Hole	1	2	3	4	5	6	7	8	9	Out
Par	4	3	5	4	4	3	4	4	3	34
Yards	226	72	358	260	250	89	271	171	98	1,795
Hcp	12	18	6	10	4	14	2	8	16

Hole	10	11	12	13	14	15	16	17	18	In
Par	4	3	4	4	4	4	5	3	5	36
Yards	322	109	205	255	310	240	376	77	308	2,202
Hcp	1	17	11	3	5	13	9	15	7

Total70 Yards3,997

Hole	Par	Yards	Hcp
1	4	226	12
2	3	72	18
3	5	358	6
4	4	260	10
5	4	250	4
6	3	89	14
7	4	271	2
8	4	171	8
9	3	98	16
Out	34	1,795
10	4	322	1
11	3	109	17
12	4	205	11
13	4	255	3
14	4	310	5
15	4	240	13
16	5	376	9
17	3	77	15
18	5	308	7
In	36	2,202
Total	70	3,997

Course rating and slope

Tee	Yards	Par	Rating / Slope
Black	5,606	70	67.3 / 123 72.7 / 137 (W)
Blue	5,249	70	65.7 / 119 70.7 / 134 (W)
White	4,913	70	64.0 / 111 68.9 / 126 (W)
White/Gold	4,431	70	61.5 / 105 66.3 / 114 (W)
Gold	3,997	70	59.9 / 95 63.4 / 103 (W)
Red	3,207	70	56.8 / 83 58.8 / 96 (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 Dunes Island

GolfCore's library covers Dunes Island Club green by green: 19 putting surfaces traced with 169 elevation contours from USGS 3DEP 1-meter lidar. The steepest measured slope on these greens tilts at 6.9 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. Dunes Island Club 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 Dunes Island 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 Dunes Island. Represent this club? Request changes or removal through our contact page.