Table 4.6 (continued)
Case
Study Predictors
Method
Reference
Livestock density within 3 km radius of the
livestock farms
Livestock density within 5 km radius of the
livestock farms
3
Depth of groundwater
Boosted regression trees
Sajedi-Hosseini
et al. (2018)
Net recharge
Multivariate discriminant
analysis
Aquifer media
Support vector
machine
Soil media
Topography
Impact of vadose zone
Hydraulic conductivity
Topographic wetness index
Distance to river
Slope percent
Drainage density
Soil type
Elevation
Land use
Lithology
4
Calendar year of sample
Censored ML
regression
Messier et al.
(2019)
Calendar month of sample
Random forest
Longitude value of well location
Latitude value of well location
Log of modeled mean well depth
Standard deviation of modeled well depth
Geometric mean of modeled well depth
Back log-transformed mean of modeled well
depth
Back log-transformed variance of modeled well
depth
Proportion of 1992 agricultural lands within the
well buffer
Annual county-level nitrogen fertilizer apportioned in 1992 to agrarian lands within the well
buffer
Physiographic region of well
pH
Hydrologic soil group A
Hydrologic soil group B
(continued)
4 Application of Artificial Intelligence in Predicting Groundwater Contaminants
95