Carissa is the daughter of Carl and Colleen Westergard of Ireton. Matthew is the son of Kevin and Sandi DeRocher of Akron.
The couple will be married in a 6 p.m. ceremony Oct. 28, 2011, at St. James Catholic Church in Le Mars. The reception will follow at 8 p.m. at Willow Creek Golf Course.
Carissa is a 2008 graduate of Akron-Westfield High School. She is a summer 2011 graduate of Iowa State University, where she earned a degree in kinesiology, specializing in community and public health. She is currently employed with Siouxland District Health and Iowa State University Extension in Plymouth County.
Matthew graduated from Akron-Westfield High School in 2006. He graduated from Iowa State University in 2010 with a degree in business management. He is currently self-employed with DeRocher Construction.