The drought indicator system in the Júcar River Basin Authority

Autores UPV
Año
CONGRESO The drought indicator system in the Júcar River Basin Authority

Abstract

The applications of different drought indices have been compared in the Júcar River Basin District where they serve as an elemental tool for the detection of drought situations and for the evaluation of water scarcity conditions depending on the final users of the water resources. Particularly, the Status Index (SI), implemented in the interregional hydrological basins, has implied a significant contribution for the formal declaration of drought situations in Spain and essentially for the prevision and tracking of the drought risk evolution and mitigation of the devastating effects of all the classified types of these environmental phenomena. Strong correlations have been obtained within the Standard Precipitation Index (SPI) and the SI for long term accumulated precipitation periods and similar results prevail with the Palmer Drought Severity Index (PDSI). Overall, moderate correlations have been calculated within the edaphic indices PDSI and Normalised Difference Vegetation Index (NDVI) and are slightly improved for medium term accumulated periods (NDVI-3) associated to the seasonal behavior of the vegetation