Approximately 100 water wells were visited and photographed. Most wells are equipped with windmills and are used for stock supply purposes. Salinities range from 500 mg/1 to 16 000 mg/1 but most f a l l within the range 1 000 to 5 000 mg/1. Standing water levels vary from 6 m to 152 m. There are no flowing wells. There are three aquifer systems. The first is the Algebuckina Sandstone/Cadna-owie Formation which is the main aquifer; within it salinities are variable, ranging from 190 to 12 000 mg/1. Standing water levels range from 6 to 152 m below the surface. Overlying these formations is the Bulldog Shale which generally has good quality water (100-1 000 mg/1) at shallow depth (0-30 m); supplies are limited. Nitrate may be present in small quantities as i t is leached from the roots of legumes. The t h i r d aquifer system is the shallow Quaternary sediments which are associated with drainage lines. Recharge to these systems occurs through downward percolation of rainfall which is concentrated along drainage lines. Thunderstorm activity , a common phenomenon in the area, is probably an important source of recharge. Under normal r a i n f a l l events recharge would be small