Flow_signatures_1366stations

16 flow signatures compiled using daily hydrograph time-series. The choice of flow signatures has been guided by a study by Olden and Poff (2003), which provides recommendations for selection of nine indices describing flow regimes with importance to hydro-ecology. In addition, five flow signatures commonly used in hydrology have been added for comparability (Qsp, CVQ, Q5, Q95, RBFlash) and two variables describing catchment response were calculated (RunoffCo and ActET).
The selected flow signatures are: mean specific flow (Qsp), coefficient of variation of daily flow (CVQ), skewness of daily flow (skew), base flow index (BFI), 5th percentile (Q5), high flow discharge (HFD), 95th percentile (Q95), low flow frequency (Lowfr), coefficient of variability of high flow frequency (HighFrVar), coefficient of variability of low flow duration (LowDurVar), mean 30-days maximum (Mean30dMax), constancy of daily flow (const), coeficient of variability in annual number of reversals (RevVar), flashiness of flow (RBFlash), Runoff coefficient (RunoffCo), actual evapotranspiration (ActET).
Only gauging stations with at least five whole calendar years of continuous daily data have been selected, and stations with obvious high regulation have been removed. No missing data was allowed over the period and the longest continuous time-series was used at each gauge. This means that time periods differ between gauging stations, the length in year of the used continuous timeseries and the starting year are given in the file (resp. nbYears and startYear). For definitions used for the different flow signatures see reference paper (Kuentz et al., 2016)." This data can be linked to the shapefile "flow_stations_sel1366" available as a separate download. To do so, link the "SUBID_EHYP" filed of the shapefile with the "SUBID" field of this dataset.