4,618 followers
RT @USGS_DWSC: This #USGS #map (https://t.co/hW5ZoPK6U5) completed in cooperation with the city of Sioux Falls, SD, showing the hydrogeolog…
RT @USGS_DWSC: This #USGS #map (https://t.co/hW5ZoPK6U5) completed in cooperation with the city of Sioux Falls, SD, showing the hydrogeolog…
This #USGS #map (https://t.co/hW5ZoPK6U5) completed in cooperation with the city of Sioux Falls, SD, showing the hydrogeologic framework of the Big Sioux aquifer near Sioux Falls, is a first step in developing a #groundwater flow model to enable water mgmt