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Thunder Bay Resort

Every green at Thunder Bay in Hillman, Michigan traced contour by contour, with fall lines, daily pins, and live wind in the GolfCore app.

GolfCore is not affiliated with or endorsed by Thunder Bay Resort.

Thunder Bay 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.

Open Thunder Bay in GolfCore

17Greens Mapped 190Elevation Contours 9.1%Steepest Slope 18Holes 72Par 10Rated Tees
Green contour map of Thunder Bay in Hillman, Michigan — 190 elevation contours at a 3-inch interval with fall-line arrows, traced from 1-meter lidar
One of 17 mapped greens at Thunder Bay, 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

LocationHillman, Michigan, United States
Address27800 M-32, Hillman, MI
Phone+1-989-742-4875
Websitethunderbayresort.com/golf
Holes18
Par72
Tees on the card10, 10 USGA-rated
Greens mapped17
Elevation contours190
Contour interval3-inch
Largest green elevation span4.7 ft
Steepest measured slope9.1%
Course mapTraced hole by hole
Wind modelingLive wind grid, 16 directions
Tree canopy1-meter canopy height model
Course data updated2026-09-01

The card

6,091 yds · Par 72 · Rating 70.0 · Slope 124

Hole 123456789 Out
Par 443453444 35
Yards 334335138384463201323401303 2,882
Hcp 12141681041826
Hole 101112131415161718 In
Par 445435345 37
Yards 351393448392178526161393470 3,312
Hcp 1111571351739

Total72 Yards6,194

Hole Par Yards Hcp
1 4 334 12
2 4 335 14
3 3 138 16
4 4 384 8
5 5 463 10
6 3 201 4
7 4 323 18
8 4 401 2
9 4 303 6
Out 35 2,882
10 4 351 11
11 4 393 1
12 5 448 15
13 4 392 7
14 3 178 13
15 5 526 5
16 3 161 17
17 4 393 3
18 5 470 9
In 37 3,312
Total 72 6,194

Course rating and slope

TeeYardsParRating / Slope
Black 6,347 72 71.2 / 128 77.5 / 139 (W)
White 6,091 72 70.0 / 124 76.1 / 135 (W)
Gold 5,403 72 67.1 / 112 72.3 / 126 (W)
Red 4,793 72 64.3 / 107 68.4 / 116 (W)
New Short 4,102 72 61.2 / 100 63.6 / 109 (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 Thunder Bay

GolfCore's library covers Thunder Bay Resort green by green: 17 putting surfaces traced with 190 elevation contours from USGS 3DEP 1-meter lidar. The steepest measured slope on these greens tilts at 9.1 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. Thunder Bay Resort 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 Thunder Bay 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.

Open this course in GolfCore Caddie Management

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