Table 4 Compact summary of Catchment III
Crops and use history | |||
|---|---|---|---|
Treated crops | Strawberries | ||
Application | 1980–1990; application in late spring and summer, BBCH growth stages > 60 | ||
Observation | |||
Leachate sampling | Matrix water samplings (mixed of 5 m sections) from drilling material of a bore, November 2017 | ||
Position of monitoring wells | Immediately next to the treated field (downstream side) | Close to the raw water abstraction | Raw water collection gallery |
Distance of treated area to downstream monitoring wells [m] | ~ 5 | ~ 150–300 | ~ 200–320 |
Geology/Lithology | |||
Leaching profile | Luvisol of loess loam covering quaternary glacial deposits (mainly silt/marl and gravel); partly as conglomerates, | ||
Aquifer | Quaternary high terrace gravel from Riß Ice Age (Dietmanns-formation) | ||
Basement | Tertiary Upper Freshwater Molasse | ||
Location | Southern Germany, Upper Swabia | ||
Topography | Field is located on an elevation, which is looped by a stream; slope is 1.5°; agricultural land use | ||
Aquifer properties | |||
Groundwater level below treated field [m] | 39.9–47.5 | ||
Thickness [m] | ~ 10 | ||
Slope of aquifer [m]/[m] | 2/300 | ||
Hydraulic conductivity [m/d] | 43–86 | ||
Dispersivity (longitudinal/vertical) [m]; [m] | 30; 0.3 | ||
Used models | |||
Leaching modeling | PEARL and HYDRUS-1D | ||
Aquifer transport modeling | FEFLOW | ||