The use of water stable isotopes for a better understanding of hydrogeological processes in Haiti: overview of existing δ18O and δ2H data

Abstract Isotope hydrological studies carried out since 1987 in Haiti have proven to be effective improving conceptual models of the principal aquifers this Caribbean island nation. However, many these been limited and are mostly unpublished. It is, therefore, important share available datasets with scientists water managers support further guide decision-making. Eleven were compiled a unique database for continued advancement application. This dataset now contains 248 δ 18 O 2 H results from samples collected at 190 locations throughout country. values range, respectively, –3.8 –8.95‰ –67.4 –16.8‰ precipitation ( n = 5), 0.9 2.76‰ 8.8 18.4‰ lakes 4), –2.61 4.98‰ –26.63 28.2‰ rivers 11), –5.11 –2.6‰ –29.8 –6.9‰ springs 82) excluding hot springs, –5.1 –1.37‰ –29.4 –2.9‰ boreholes 142). The overall presentation data is complemented an overview which stable isotope acquisition was performed. global presented under three primary contexts: (1) elaboration local meteoric line equation 7.2δ + supported predominately Ouest jurisdictional department, (2) spatial variability analysis dataset, (3) definition altitude gradient (per 100 m) using freshwater Plaine du Cul-de-Sac/Massif de la Selle area –6.67‰ –0.09‰ O.