Steven Michael Larry Waters, 24, of no fixed abode, received a two-year prison sentence at Portsmouth Crown Court on Friday.
He was charged with possession of a controlled drug of Class A (Heroin) and possession with intent to supply of a controlled drug of Class A (Crack Cocaine).
Waters was arrested by officers from the Fortress Drugs-Related Harm team after they spotted him dealing drugs to local users in Church Road on 25th June.
Chief Inspector Jim Pegler said, “Our Fortress Drugs-Related Harm team works hard to target those people who choose to deal drugs.
“This sentence sends a clear message to those dealers that we will not tolerate drug dealing and their related offences in Portsmouth. I also hope it reassures our local community that we will continue to target those involved
“Putting Waters behind bars will undoubtedly improve the quality of life of the people who live in the local area.”