Table 1 Overview of the criteria used to calculate the ATES suitability potential, their respective classes or value ranges and the corresponding normalized scores

Aquifer productivity

Possible average continuous extraction rates of single wells [l/s]

Significant groundwater resources—very productive

Mostly > 40

1

Significant groundwater resources—productive

Mostly 15–40

0.8

Significant groundwater resources—less or varyingly productive

Mostly 5–15

0.6

Mostly < 5

0.4

No significant groundwater resources

Mostly < 2

0.1

Iron and manganese contents in groundwater

Groundwater without increased iron/manganese contents

1

Groundwater with increased iron/manganese contents

0

Groundwater flow velocity

 < 0.5 m/d

1

0.5–1.5 m/d

0.6

1.5–5.0 m/d

0.4

 > 5.0 m/d or no data available

0

Ratio CDDs/HDDs^a

0.27

1

[…]

[…]

0

0