Optimizing Reservoir-Stream-Aquifer Interactions for Conjunctive Use and Hydropower Production

Table 1

Parameters associated with the streams, lake, and aquifer.

Parameters	Values
Reservoir/lake
Area	2.3 × 10^6 m^2
Capacity	42 × 10^6 m^3
Cutoff elevation	29.5 m
Turbine elevation	20.0 m
Initial stage	29.0 m
Diversion channel capacity	14115 m^3/day
Penstock Capacity (release to hydropower)	200,000 m^3/day
Hydraulic Conductivity of lakebed	0.04 m/day
Thickness of lakebed sediment	0.9 m
Streams
Width	9.1 m
Thickness of streambed sediment	0.3 m
Slope of streambed segments	0.0002
Hydraulic conductivity of streambed sediment	0.04 m/day
Manning’s roughness coefficient	0.02
Streambed conductance	180 m^2/day
Stream inflow to lake
Total length	6090 m
Inflows in stress period 1	225840 m^3/day
Inflows in stress period 2	56460 m^3/day
Inflows in stress period 3	112920 m^3/day
Stream outflow from lake
Total length	2435 m
First diversion channel capacity	8750 m^3/day
Second diversion channel capacity	14115 m^3/day
Aquifer
Hydraulic conductivity of unconfined layer	61 m/Day
Specific yield of the unconfined layer	0.15
Transmissivity of the confined layer	371 m^2/day
Storage coefficient of the confined layer	0.0001
Ratio of horizontal to vertical hydraulic conductivity	100
Groundwater recharge	0.8 × 10^−3m/day
Precipitation rate	2.2 × 10^−3m/day
Evaporation rate	1.74 × 10^−3m/day
Irrigated field	𝟔𝟓𝟎×𝟏𝟎^𝟑 m^2