Ground-water flow directions and estimation of aquifer hydraulic properties in the lower Great Miami River Buried Valley aquifer system, Hamilton Area, Ohio

• DOI: 10.3133/sir20055013
• Publication Date: 2018-08-15T18:04:49Z
• Authors: Rodney A. Sheets; Karen E. Bossenbroek
• Keywords: Lithology; Aquifer properties; Infiltration (HVAC); Aquifer test

The Great Miami River Buried Valley Aquifer System is one of the most productive sources potable water in Midwest, yielding as much 3,000 gallons per minute to wells. Many water-supply wells tapping this aquifer system are purposely placed near rivers take advantage induced infiltration from rivers. City Hamilton's North Well Field consists 10 River, all completed lower System. A well-drilling program and a multiple-well test were done investigate ground-water flow directions estimate hydraulic properties part Descriptions lithology well borings indicate varying amounts thickness clay or till, therefore, levels potential confinement. Borings also that can change dramatically over relatively short distances. Grain-size analyses an average bulk conductivity value materials 240 feet day; geometric mean values material was 89 day. Median grain sizes units 1.3 millimeters 0.1 millimeters, respectively. Water Hamilton affected by stream stage barometric pressure. Bank storage response evident. Results at field indicate, do lithologic descriptions, semiconfined some areas unconfined others. Transmissivity coefficient 50,000 squared day 5x10-4, (450 day) based on reasonable for glacial outwash but higher than calculated grain-size analyses, implying scale effect. Although where located semiconfined, unconfined, locally confined not directly connected discontinuity clay/till layers beneath river indicates other, deeper parts may be River.