A First Nations group is calling for an environmental audit of Manitoba Hydro.

The Southern Chiefs Organization (SCO) says the provincial utility is putting Manitoba's environment at risk by manipulating water levels to produce electricity.

The SCO, an advocacy group for First Nations people in southern Manitoba, has requested the Public Utilities Board to grant intervener status at upcoming hearings on Hydro.

Grand Chief Morris Swan Shannacappo said his organization has been asking Hydro for an environmental assessment for more than a year without a response.

"I think not only the First Nations, but Manitobans, have to get onside and able to ask those questions: What is the environmental damage you are causing by keeping these waters in the reservoirs really high?"

Swan Shannacappo said communities such as Roseau River Anishinabe First Nation and Peguis First Nation have experienced serious flooding because of Hydro's practices.

The utility should be looking at generating more electricity through wind turbines, he said, adding the federal and provincial governments should force Hydro to complete an environmental audit.