Eynon's jail sentence included nine months for an unrelated charge of driving with an excess breath alcohol - his fourth such offence.
On November 2, Eynon was caught driving in Putaruru with a breath alcohol level of 1272- that's more than five times the adult legal limit of 250mcg.
Judge Paul Mabey QC told Eynon that the careless driving and failing to report a crash were minor offences in the scheme of things.
But failing to check on his victim was "one of the most serious offences" in the list of traffic-related crimes with a maximum penalty of five years in prison.
"For all you knew, Mr Eynon, your victim could have critical injuries or she could have been dead," he said.
Eynon was also ordered to pay $2477 reparation, disqualified from driving for 12 months. and his Nissan utility was confiscated.