Geodatabase of the datasets used to represent the 4 subareas of the Lower Cretaceous aquifer, Iowa, Kansas, Minnesota, Montana, Nebraska, North Dakota, South Dakota, and Wyoming
This geodatabase includes spatial datasets which represent the Lower Cretaceous 
aquifer system in the States of Iowa, Kansas, Minnesota, Montana, Nebraska, 
North Dakota, South Dakota, and Wyoming. Included are: (1) a polygon dataset 
that represents the aquifer system extent, (2) raster datasets for the altitude of …