Exact(1)
As the river flows from the headwaters to the floodplain, the river gains and loses water, but usually the river width and stream flow gradually increase.
Similar(59)
In Fig. 3, the white bars indicate river gain, and the black bars indicate river loss.
For this reason, methods that estimate river gain or loss over small scales cannot be easily extrapolated to provide flux estimates over the tens to hundreds of kilometres of river length required for regional water management.
The difference between these two numbers represents the river gain or water coming from the groundwater system and can be compared with the flow across the river boundary calculated by zone budget.
Table 4 Surface water components based on numerical modelling results Component Average annual volume (million m3) Model results Field measurements Rivers outflow 718 717 Rivers gain 222 – Rivers loss 17 – Rivers inflow 504a 504 Surface water takes 2a 2 aMeasured values have been used (no simulated values).
Figure 3 shows that rivers gain and lose at different locations in the basin, but in terms of volume the rivers' gain is more than the loss.
Model results also show that rivers gain from the aquifer system is more than river losses.
Quantitatively, rivers gain from the aquifer system much more than what they lose.
The surface water balance may be computed based on the following equation: R_{text{out}} =, R_{text{in}} - R_{text{loss}} +, R_{text{gain}} - S (4 where Rout is the total rivers' outflow, Rin is the total rivers inflow, Rloss is the river losses to the groundwater system, Rgain is the rivers gain from the groundwater system and S is the surface water takes.
Rivers gained national attention after she was fired in 1999 for undergoing a sex-change operation and later sued.
THE fast-flowing currents and rich biodiversity of the Mekong river have gained a temporary reprieve.
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