Vulnerability of shallow ground water and drinking-water wells to nitrate in the United States: Model of predicted nitrate concentration in shallow, recently recharged ground water -- Input data set for carbonate rocks (gwava-s_crox)
This data set represents the presence or absence of Valley and
Ridge carbonate rocks in the conterminous United States.
The data set was used as an input data layer for a national
model to predict nitrate concentration in shallow ground water.
Nolan and Hitt (2006) developed two national models to predict …