Spatio-temporal variability in the thermal regimes of the
Danjiangkou reservoir and its downstream river due to the
large water diversion project system in central China
by Pan Chen, Lan Li, and Hongbin Zhang
Hydrol Res
Volume 47(1):104-127
February 9, 2016
©2016 by IWA Publishing
Map of the study area.
Pan Chen et al. Hydrol Res 2016;47:104-127
©2016 by IWA Publishing
Spatial distribution of water temperature at the monitoring section (a) and temporal variation at
the hydropower intake (b) for Danjiangkou reservoir.
Pan Chen et al. Hydrol Res 2016;47:104-127
©2016 by IWA Publishing
Monthly water temperature (a), flow (b), and water level (c) during the period from 1969 to 1980.
Pan Chen et al. Hydrol Res 2016;47:104-127
©2016 by IWA Publishing
Comparison of monthly water temperature and monthly air temperature at Huangjiagang station
(a) and Nianpanshan station (b).
Pan Chen et al. Hydrol Res 2016;47:104-127
©2016 by IWA Publishing
Grid map for Danjiangkou reservoir.
Pan Chen et al. Hydrol Res 2016;47:104-127
©2016 by IWA Publishing
Boundary conditions for the EFDC model: (a) inflow for S1 and S2 only, with a small difference
to S3 and S4; (b) inflow temperature for four simulation scenarios; and (c) outflow for four
simulation scenarios.
Pan Chen et al. Hydrol Res 2016;47:104-127
©2016 by IWA Publishing
Meteorological conditions: precipitation (a) and air temperature (b) for three hydrological years.
Pan Chen et al. Hydrol Res 2016;47:104-127
©2016 by IWA Publishing
Comparison of observed and simulated daily water temperature during the calibration period,
including a wet year (a), a normal year (b), and a dry year (c); and validation period, including
another wet year (d), normal year (e), and dry year (f) at Danjiang...
Pan Chen et al. Hydrol Res 2016;47:104-127
©2016 by IWA Publishing
Comparison of observed and simulated monthly water temperature during calibration period (a)
and validation period (b).
Pan Chen et al. Hydrol Res 2016;47:104-127
©2016 by IWA Publishing
Elevation–time isotherm diagrams for Danjiangkou reservoir: (a) wet year, S1; (b) normal year,
S1; (c) dry year, S1; (d) normal year, S2; (e) normal year, S3 and S4.
Pan Chen et al. Hydrol Res 2016;47:104-127
©2016 by IWA Publishing
Release temperature from the Danjiangkou reservoir according to S1 (a), S2 (b), and S3 and S4
(c) in three hydrological years.
Pan Chen et al. Hydrol Res 2016;47:104-127
©2016 by IWA Publishing
Monthly stream temperatures in the study reach at S1 (a), S2 (b), S3 (c), and S4 (d) during three
hydrological years.
Pan Chen et al. Hydrol Res 2016;47:104-127
©2016 by IWA Publishing
Longitudinal stream temperature profiles at the four simulation scenarios in August.
Pan Chen et al. Hydrol Res 2016;47:104-127
©2016 by IWA Publishing
Comparison of longitudinal scale factor (Cx) profiles at S1, S2, and S3.
Pan Chen et al. Hydrol Res 2016;47:104-127
©2016 by IWA Publishing
Comparison of longitudinal stream temperature profiles in August pre- and post-dam
heightening with the same constant release discharge and varying release temperature (solid
and dotted lines represent pre- and post-dam heightening conditions, respectively).
Pan Chen et al. Hydrol Res 2016;47:104-127
©2016 by IWA Publishing
Comparison of longitudinal stream temperature profiles at S2, S2′, and S3 in August.
Pan Chen et al. Hydrol Res 2016;47:104-127
©2016 by IWA Publishing
Fish spawning period and minimum spawning temperature in relation to water temperature in S1
(a) and S4 (b) for different positions in the mid-Han River.
Pan Chen et al. Hydrol Res 2016;47:104-127
©2016 by IWA Publishing