Dylan, 13, has been missing since Monday morning.
He disappeared during a court-ordered visit to his father, Mark Redwine, who lives in Vallecito, about 22 miles northeast of Durango, said Dan Bender, a spokesman for the La Plata County Sheriff's Office.
The sheriff's office, La Plata County Search and Rescue and citizen volunteers are searching Vallecito Lake by boat, trolling forest roads with off-highway-vehicles and going door-to-door in search of Dylan.
Search K-9's are also expanding their search.
Dylan grew up in the Bayfield, Colo. area and moved to Colorado Springs in the summer with his mother, Elaine Redwine, and brother.
He is 13 years old, five-feet tall with blond hair and blue eyes.
He was last seen wearing a Duke baseball cap, a black Nike T-shirt, black basketball shorts and a black back pack, Bender said.
Mark Redwine told investigators he last saw his son at 7:30 a.m. at Mark Redwine's home on County Road 500. He left for Durango to run errands and returned at 11:30 a.m. and Dylan was missing.
Elaine Redwine and Dylan's brother arrived in Durango shortly after Dylan was reported missing.
Bender said all of Dylan's relatives are cooperating with police.
“Sheriff's office personnel working to find Dylan are fathers, mothers, and grandparents.
Each of us feel Dylan's family's pain and know something could just as easily happen to our loved ones,” Bender said in a prepared statement.
The Colorado Bureau of Investigations issued a media alert Friday with information on Dylan in an effort to better publicize Dylan's picture, Bender said.
Dylan was also added to the Nation Center for Missing and Exploited Children's website. He is one of 18 males and 37 total children who have been reported and are still missing in Colorado since the organization was founded in 1984.