However, Ms Bargh questioned what the purpose of the map was if it was not to define a particular boundary.
"It's a huge area and it goes right through the Te Arawa territory. We are saying once the bill goes through the effect of the deed of settlement will kind of make it a fact," Ms Bargh said.
"This map has no purpose ... it does not describe an area that needs to be defined for this settlement, it is not part of the redress. So why is it there?"
Ms Bargh said it blamed the Crown for allowing it to be included as part of the Raukawa deed of settlement.
"It hasn't helped, in fact it has contributed to deterioration of iwi relationship," she said.
"Besides being an affront to Te Arawa, a significant outcome of this map is that some Te Arawa iwi do not appear to have any exclusive areas of interest - in other words Raukawa claims associations with all of the lands of those iwi," she said.
"In our view, this is modern-day imperialism with Ngati Raukawa trying to create an empire of their own."
Raukawa Settlement Trust chairwoman Vanessa Eparaima said the map was an acknowledgment of the close whakapapa connections to its neighbours.
"As a result, it is impossible for us to define an area of interest which does not overlap with others, as we overlap both in our whakapapa and geography. In these overlapping areas, it is often that very connection and overlap with our neighbours that makes these areas important to us. It would therefore be wrong, and disrespectful of us, to exclude these areas."
The Maori Affairs Select Committee has ordered an inquiry into the iwi's tribal territory.