Ground Water Atlas of the United States: Kansas, M
USGS report on the geology and hydrology of principal aquifers in the region.
Ground Water Atlas of the United States: Montana,
Online USGS report describes the groundwater resources of this 4-state region.
Lewis and Clark Rural Water System
Regional water planning organization in South Dakota, Iowa and Minnesota.
Saving Water, U.S. Farmers Are Worried They'l
New York Times article about progress of water conservation and future supply outlook in the region served by the Ogallala Aquifer.