- 18Holes
- 72Par
- 8Rated tees
- 17Greens mapped
- 197Contours
- 10.6%Steepest slope
About River Island
River Island Golf Course is an 18-hole golf course playing to par 72 in Porterville, California. Bob E. Baldock, Casey O'Callaghan designed it, and it opened in 1963. GolfCore has mapped 17 greens here with contour lines and fall-line arrows. The card below lists 8 rated tees with yardages for all 18 holes. GPS yardages and scoring are free in the GolfCore app.
Plan your visit
31989 River Island Dr, Porterville, CA 93257
+1 559-854-7890
How the greens break
GolfCore traced 17 greens at River Island from USGS 3DEP 1-meter lidar, with 197 elevation contours at a 3-inch interval. The steepest measured slope is 10.6 percent, and the largest rise across a single green is 3.9 ft.
In the app the same map sits under your ball on every green, with the fall line drawn to the hole and the wind modeled at your position. At clubs that run GolfCore, the pins the shop sets each morning show up there too.
Elevation: USGS 3D Elevation Program, U.S. Geological Survey, National Geospatial Program (public domain), processed by GolfCore.
The card
| Hole | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | Out |
|---|---|---|---|---|---|---|---|---|---|---|
| Par | 4 | 4 | 5 | 4 | 4 | 5 | 3 | 4 | 3 | 36 |
| Yards | 386 | 339 | 465 | 385 | 373 | 511 | 174 | 358 | 126 | 3,117 |
| Hcp | 3 | 7 | 15 | 5 | 1 | 13 | 11 | 9 | 17 |
| Hole | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | In |
|---|---|---|---|---|---|---|---|---|---|---|
| Par | 4 | 3 | 5 | 4 | 5 | 4 | 3 | 4 | 4 | 36 |
| Yards | 431 | 149 | 494 | 362 | 563 | 352 | 150 | 369 | 323 | 3,193 |
| Hcp | 2 | 16 | 12 | 10 | 4 | 14 | 18 | 8 | 6 |
Total72 Yards6,310
| Hole | Par | Yards | Hcp |
|---|---|---|---|
| 1 | 4 | 386 | 3 |
| 2 | 4 | 339 | 7 |
| 3 | 5 | 465 | 15 |
| 4 | 4 | 385 | 5 |
| 5 | 4 | 373 | 1 |
| 6 | 5 | 511 | 13 |
| 7 | 3 | 174 | 11 |
| 8 | 4 | 358 | 9 |
| 9 | 3 | 126 | 17 |
| Out | 36 | 3,117 | |
| 10 | 4 | 431 | 2 |
| 11 | 3 | 149 | 16 |
| 12 | 5 | 494 | 12 |
| 13 | 4 | 362 | 10 |
| 14 | 5 | 563 | 4 |
| 15 | 4 | 352 | 14 |
| 16 | 3 | 150 | 18 |
| 17 | 4 | 369 | 8 |
| 18 | 4 | 323 | 6 |
| In | 36 | 3,193 | |
| Total | 72 | 6,310 |
Course rating and slope
| Tee | Yards | Par | Rating / Slope |
|---|---|---|---|
| Blue | 6,746 | 72 | 72.3 / 139 78.5 / 140 (W) |
| White | 6,310 | 72 | 70.4 / 130 76.1 / 136 (W) |
| Gold | 5,738 | 72 | 67.8 / 120 72.9 / 129 (W) |
| Red | 5,240 | 71 | 65.4 / 112 70.6 / 120 (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. Spot a wrong par, yardage or stroke index? Report it from Map Settings in the app, or send us a correction.
Course details
- Location
- Porterville, California, United States
- Address
- 31989 River Island Dr, Porterville, CA 93257
- Phone
- +1 559-854-7890
- Website
- riverislandcountryclub.com
- Architect
- Bob E. Baldock, Casey O'Callaghan
- Opened
- 1963
- Holes
- 18
- Par
- 72
- Tees on the card
- 8, 8 USGA-rated
- Greens mapped
- 17
- Elevation contours
- 197
- Contour interval
- 3-inch
- Largest green elevation span
- 3.9 ft
- Steepest measured slope
- 10.6%
- Course map
- Traced hole by hole
- Wind modeling
- Live wind grid, 16 directions
- Tree canopy
- 1-meter canopy height model
- Course data updated
- 2026-11-10
More courses nearby
Straight-line distance from River Island Golf Course.
-
Porterville Municipal Golf CousePorterville, California8.3 mi straight-line
18 holes, par 70, scorecard, course map, green maps
-
Exeter GCExeter, California21.1 mi straight-line
9 holes, par 29, scorecard, course map, green maps
-
Tulare Golf and Country ClubTulare, California26.2 mi straight-line
18 holes, par 72, scorecard, course map, green maps
-
Visalia CCVisalia, California30.5 mi straight-line
18 holes, par 72, scorecard, course map, green maps
- Delano Public Golf Course
Delano, California31.8 mi straight-line
18 holes, par 64, scorecard, course map, green maps
-
Three Rivers GCThree Rivers, California22.9 mi straight-line
18 holes, par 70, scorecard
Staff at River Island can claim this course by signing in with an email address at the club's own domain, then edit its address, phone, website and crest at no charge. Read how a club keeps its course right. The same system runs a club's tee sheet and caddie yard; read how caddie management on GolfCore works.