About 40% of the residents of New Brunswick obtain their water supply from surface water sources.
The Department of the Environment is responsible for the management of the surface and groundwater resources of New Brunswick.
Monthly summaries of the state of water levels based on the previous six months of precipitation and stream flow data, are accessible from the Department of Environment Water Quantity Information webpage. The information includes the amount of precipitation (rain and snow), streamflow volumes and water levels in selected wells. Data is given as isopleths showing percent of normal.
New Brunswick's Department of Environment Watershed Protection webpage describes the Watershed Protection Program that was developed to protect drinking water quality.
The department's New Brunswick Watersheds webpage provides factsheets on a number of New Brunswick watersheds. The information includes maps of the watersheds and descriptions of the physical settings, climate, geology, fishery and water quality (indices and key indicators).