The pair was found uninjured around 9 p.m. Sunday walking on private property near the IPL dam.
The deputy, Lloyd Miller, was treated and released from the hospital.
He was taken into custody by the Kansas Highway Patrol.
Heavy rain left part of Central Indiana dealing with flood waters Sunday.
Hospital officials said he has undergone 19 surgeries and over 50 dressing changes for his burn injuries.
DHS is in the area assessing damage, but no injuries have been reported.
The two, both diabetics, survived on rainwater, a butter cream pie and 8 pounds of oranges.
Deputies spotted the 1994 Plymouth Voyager van at N. Barlow and 29th and arrested Noe Andrade Silva.