Hydrological Processes, Journal Year: 2025, Volume and Issue: 39(3)
Published: March 1, 2025
ABSTRACT Estimates of dynamic groundwater volumes supplying baseflow to streams are important for water availability projections during extended periods drought. The primary goals this study were provide storage volume estimates, inferred from streamflow recession analysis, regimes within seven gaged catchments the Neversink Reservoir Watershed (NRW), a critical municipal source New York City. Additionally, geomorphological properties, surficial geology and hydro‐meteorological processes quantified described in relation time spatially variable behaviour estimates across NRW. To explore these relationships, we (1) evaluated seasonal trends modelled potential evapotranspiration (PET) catchment runoff rates, (2) derived empirical models cool‐season using both linear nonlinear reservoir assumptions (3) calculated metrics related geomorphology each compared area normalised estimates. Results show that behaves as reservoir, applying may underestimate total what would be predicted reservoir. Increases PET caused decreases conditions resulted increased rates nonlinearity growing season. found while no single physical characteristic solely dynamics, sediment stream gradients stronger predictors than surface or topography alone. Within NRW, with highest exhibited lowest higher volumes, smallest catchment, mostly devoid sediment, had fastest rate volume.
Language: Английский