River Islands, designed by Big_Smooth_one3, is a popular course released by TGC 2019 simulation software. The golf club is situated in Porterville, California, and was built in 1963. It boasts an 18-hole championship golf course with a total yardage of 6,917. The golf course is situated among undulating hills and has a number of lakes and streams that are used as hazards on several holes. It comprises 135 slopes, has a par value of 72, and has achieved a rating of 73.6.

The course is renowned for its challenging design and immaculate fairways and greens. It enjoys an all-year-round golf season, along with a teaching professional helping players sharpen their skills. The driving range, putting green, and chipping area of River Island Country Club are available for use in addition to the golf course. The club also has a pro shop, a restaurant, and golf lessons for players of all skill levels.