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Subject
- Groundwater24
- Geology, Stratigraphic23
- Aquifers22
- Cretaceous Geologic Period15
- Outcrops (Geology)10
- Volcanic ash, tuff, etc9
- Granite8
- Granite outcrops7
- Basalt6
- Basalt outcrops6
- Water chemistry5
- Sedimentary rocks4
- Formations (Geology)3
- Jurassic Geologic Period3
- Siliceous rocks3
- Stream measurements3
- Breccia2
- Runoff2
- Wells2
- Argillite1