2020. State of Nebraska. Public data is from the Conservation and Survey Department at UNL. A digitized version of the bedrock geology of Nebraska. Primary source is a 1:25... State of Nebraska.
2020. State of Nebraska. Public data is from the Conservation and Survey Department at UNL. This is a subset of the Bedrock Geology GIS dataset of just the Ogallala group.A... State of Nebraska.
2020. Nebraska Game & Parks Commission. This is a dataset showing the ecoregions of the state of Nebraska as defined in conjunction with the development of a comprehensive wildlife conser... State of Nebraska.
1990. Diffendal, Jr., Robert. SCALE 1:250,000 CONTOUR INTERVAL 200 FEET Geology mapped principally from 1991-2000 by RFD, M.RV, E.JV, H. LG , and C.LT Editing and layout by R.F....