Timberline Gc 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.

18Greens Mapped 250Elevation Contours 18.8%Steepest Slope 18Holes 72Par 5Rated Tees

Green contour map of Timberline Gc in Peosta, Iowa — 250 elevation contours at a 3-inch interval with fall-line arrows, traced from 1-meter lidar — One of 18 mapped greens at Timberline Gc, 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	Peosta, Iowa, United States
Address	19858 East Pleasant Grove Rd., Peosta, IA
Phone	+1 563-876-3422
Holes	18
Par	72
Tees on the card	5, 5 USGA-rated
Greens mapped	18
Elevation contours	250
Contour interval	3-inch
Largest green elevation span	6.0 ft
Steepest measured slope	18.8%
Course map	Traced hole by hole
Wind modeling	Live wind grid, 16 directions
Tree canopy	1-meter canopy height model
Course data updated	2026-08-11

The card

Tees

4,421 yds · Par 73 · Rating 66.2 · Slope 103

Hole	1	2	3	4	5	6	7	8	9	Out
Par	4	5	3	4	3	5	4	4	4	36
Yards	309	335	139	220	152	323	345	220	227	2,270
Hcp	10	16	12	14	4	18	2	8	6

Hole	10	11	12	13	14	15	16	17	18	In
Par	4	5	3	4	3	4	4	5	5	37
Yards	270	322	118	214	142	260	225	240	360	2,151
Hcp	11	17	15	7	13	1	9	5	3

Total73 Yards4,421

Hole	Par	Yards	Hcp
1	4	309	10
2	5	335	16
3	3	139	12
4	4	220	14
5	3	152	4
6	5	323	18
7	4	345	2
8	4	220	8
9	4	227	6
Out	36	2,270
10	4	270	11
11	5	322	17
12	3	118	15
13	4	214	7
14	3	142	13
15	4	260	1
16	4	225	9
17	5	240	5
18	5	360	3
In	37	2,151
Total	73	4,421

Course rating and slope

Tee	Yards	Par	Rating / Slope
Black	6,557	72	72.2 / 120
Silver	6,131	72	70.4 / 114
Red	5,256	73	66.1 / 107 71.2 / 113 (W)
White	4,421	73	66.2 / 103 (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 Timberline Gc

GolfCore's library covers Timberline Golf Course green by green: 18 putting surfaces traced with 250 elevation contours from USGS 3DEP 1-meter lidar. The steepest measured slope on these greens tilts at 18.8 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. Timberline Golf Course 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 Timberline Gc 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 Timberline Gc. Represent this club? Request changes or removal through our contact page.