TCP Machine Learning Model

This project uses explanatory layers to predict 1,2,3-Trichloropropane (TCP) grountwater concentrations the Central Valley, California, US. The explanatory layers used in the model can be found using the links below.

Groundwater Age estimate

Geostatistical estimation of tritium-helium age dating of groundwater sampled under the State Water Board GAMA Program, by Lawrence Livermore National Laboratory. https://waterboards.maps.arcgis.com/home/item.html?id=69fa92fc02e946b29c4911af13f50b1a

Land Use

CAML 1945, 1960, 1975, 1990, 2005 (Viers et al., 2012) UC Davis center for watershed science: http://ucd-cws.github.io/nitrates/maps/ Coordinate system: NAD 1983 California (Teale) Albers (Meters)

Irrigation

CAML 1945, 1960, 1975, 1990, 2005 (Viers et al., 2012) UC Davis center for watershed science: http://ucd-cws.github.io/nitrates/maps/ Coordinate system: NAD 1983 California (Teale) Albers (Meters)

Soil Drainage Class

USGS SSURGO - Soil drainage class https://www.arcgis.com/home/item.html?id=55d0c2d32c234ce497cd30dc9bc06729

Soil Hydrologic Group

USGS SSURGO - Soil hydrologic group https://www.arcgis.com/home/item.html?id=be2124509b064754875b8f0d6176cc4c Direct data download from box: https://nrcs.app.box.com/v/soils

Dissolved oxygen concentration at selected thresholds

USGS Probability distribution grids of dissolved oxygen (Rosecrans et al., 2018) https://www.sciencebase.gov/catalog/item/57f433c3e4b0bc0bec033fc9?community=USGS+California+Water+Science+Center

Nitrate concentration

USGS Groundwater nitrate data https://www.sciencebase.gov/catalog/item/58c1d920e4b014cc3a3d3b63

Precipitation

PRISM Climate Group: Northwest Alliance for Computational Science and Engineering 1945, 1960, 1975, 1990, 2005 https://prism.oregonstate.edu/