RCMP Sgt. Josee Valiquette says the officer underwent surgery and will likely be in hospital for some time.
Another officer had his arm grazed by a bullet when police went to a farmhouse Monday after getting a call about someone threatening to kill someone with a handgun.
Valiquette says the names of both officers will be released when charges are sworn.
She says the man wounded in the shootout with Mounties will be charged when he is medically fit to appear in court.
Police have previously said the alleged gunman will likely be charged with attempted murder and firearms offences.
On Monday, five Mounties approached a farm, with two officers staying at a distance as three others went to the house.
The officers spotted the suspect's truck parked near a shed. When two of the Mounties looked inside, they found the suspect hiding there and a fight began.
The suspect managed to get away, got into his truck and there was a gunfight with RCMP.
The wounded suspect was arrested after a lengthy standoff.
A couple arrested on the farm with the alleged gunman were later released without being charged.
Alberta's Serious Incident Response Team will investigate the shooting, which is standard procedure in Alberta when anyone is shot by police. ASIRT can make recommendations to the RCMP.
Also on HuffPost