#downstreamness — Public Fediverse posts

Impact Of Reservoir Storage On Propagation From Meteorological To Hydrological Drought
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https://doi.org/10.1016/j.jhydrol.2026.136061 <-- shared paper
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H/T @DrAjayGupta | Post Doctoral Fellow, IIT Bombay | Ph.D. in Hydrology, IIT Roorkee | Commonwealth Split-site Fellow, University of Birmingham I M.Tech in Water Resources Engineering, NIT Silchar | B.E. in Civil Engineering, PCE Nagpur.
“🌍 Why is this important?
While reservoirs are widely recognized for mitigating drought impacts, their role in controlling how drought propagates through the hydrological cycle has remained largely unexplored. In this study, [the authors] investigate how reservoir storage influences the transition of drought from meteorological to agricultural to reservoir to streamflow drought across the semi-arid Krishna River Basin, India.
🔍 THIS STUDY ADDRESSES TWO KEY RESEARCH QUESTIONS:
✅ How do drought propagation time (initiation, peak, and termination) change from meteorological to agricultural, reservoir, and streamflow droughts across different timescales and threshold values?
✅ How does reservoir storage influence drought propagation between upstream and downstream reservoirs using the Downstreamness concept?
📌 KEY FINDINGS
🔹 Drought propagation differs substantially across drought types because each component of the hydrological system responds at different rates.
🔹 Reservoirs significantly delay the propagation of drought by buffering water deficits, particularly between agricultural and streamflow drought.
🔹 Mild and moderate upstream reservoir droughts rarely propagate downstream, whereas severe upstream droughts consistently transmit downstream, leading to longer duration, greater severity, and delayed onset.
🔹 The downstreamness analysis reveals dynamic shifts in water storage between upstream and downstream reservoirs throughout drought development and recovery, providing valuable insights for reservoir operation and basin-scale drought management…”
--
“HIGHLIGHTS
• Reservoir storage impact on drought propagation from meteorological-to-hydrological drought.
• Drought propagation timeframe: initiation, peak and termination are checked.
• Impact assessment using hydrological connection: upstream to downstream reservoirs.
• Severe upstream droughts propagate downstream with increased duration and severity.
• During drought periods water-storage concentration shifts from downstream to upstream..."
#Drought #DroughtPropagation #Reservoirs #WaterResources #WaterManagement #RiverBasinManagement #KrishnaRiverBasin #Downstreamness #India #climatechange #reservoir #storage #hydrology #water #hydrologiccycle #watersecurity #planning #policy #KrishnaRiver #weather #climate #metrology #agriculture #farming #streamflow #model #modeling #spatiotemporal #spatialanalysis

Impact Of Reservoir Storage On Propagation From Meteorological To Hydrological Drought
--
https://doi.org/10.1016/j.jhydrol.2026.136061 <-- shared paper
--
H/T @DrAjayGupta | Post Doctoral Fellow, IIT Bombay | Ph.D. in Hydrology, IIT Roorkee | Commonwealth Split-site Fellow, University of Birmingham I M.Tech in Water Resources Engineering, NIT Silchar | B.E. in Civil Engineering, PCE Nagpur.
“🌍 Why is this important?
While reservoirs are widely recognized for mitigating drought impacts, their role in controlling how drought propagates through the hydrological cycle has remained largely unexplored. In this study, [the authors] investigate how reservoir storage influences the transition of drought from meteorological to agricultural to reservoir to streamflow drought across the semi-arid Krishna River Basin, India.
🔍 THIS STUDY ADDRESSES TWO KEY RESEARCH QUESTIONS:
✅ How do drought propagation time (initiation, peak, and termination) change from meteorological to agricultural, reservoir, and streamflow droughts across different timescales and threshold values?
✅ How does reservoir storage influence drought propagation between upstream and downstream reservoirs using the Downstreamness concept?
📌 KEY FINDINGS
🔹 Drought propagation differs substantially across drought types because each component of the hydrological system responds at different rates.
🔹 Reservoirs significantly delay the propagation of drought by buffering water deficits, particularly between agricultural and streamflow drought.
🔹 Mild and moderate upstream reservoir droughts rarely propagate downstream, whereas severe upstream droughts consistently transmit downstream, leading to longer duration, greater severity, and delayed onset.
🔹 The downstreamness analysis reveals dynamic shifts in water storage between upstream and downstream reservoirs throughout drought development and recovery, providing valuable insights for reservoir operation and basin-scale drought management…”
--
“HIGHLIGHTS
• Reservoir storage impact on drought propagation from meteorological-to-hydrological drought.
• Drought propagation timeframe: initiation, peak and termination are checked.
• Impact assessment using hydrological connection: upstream to downstream reservoirs.
• Severe upstream droughts propagate downstream with increased duration and severity.
• During drought periods water-storage concentration shifts from downstream to upstream..."
#Drought #DroughtPropagation #Reservoirs #WaterResources #WaterManagement #RiverBasinManagement #KrishnaRiverBasin #Downstreamness #India #climatechange #reservoir #storage #hydrology #water #hydrologiccycle #watersecurity #planning #policy #KrishnaRiver #weather #climate #metrology #agriculture #farming #streamflow #model #modeling #spatiotemporal #spatialanalysis