ИСТИНА

There are no instrumental observations of hydrometeorological parameters longer than 120 years in the Volga Region and in Russia as well. The length of hydrological records such as river streamflow is even shorter and goes up to 50-60 years. However, dendrochronological method gives the possibility to extend the actual instrumental data in case of strong, stable and significant correlations between tree ring data and reconstructed parameter. During the study, we have built 9 pine (Pinus sylvestris L.) tree ring chronologies and one regional chronology MasterTY. Then, based on tree ring data and linear regression model we tried reconstructing streamflow of Ilet river (1827-2013) and Palmer Drought Severity Index (1825-2013) for the region. The study shows a big potential for such reconstructions in the Volga region. The models explain 27 to 34 % of the PDSI and streamflow variability. The reconstructed datasets reflect the main extremes in the actual data. The study was supported by RFFI project № 16-35-00408.