Symbols | MEANINGS | Units |
Lu | The thickness of the useful cracked horizon | m |
QLu | The flow rate of this useful fissured horizon | m3/s |
Qpl | The flow rate of the useful fissured medium | m2/s |
Q/P’ | the instantaneous linear flow | m2/s |
Nf | The number of boreholes | unitless |
| Porosity of fractures and connected pores | unitless |
Ce | Water compressibility coefficient | m3/m3/bar |
Cma | Matrix compressibility coefficient. | m3/m3/bar |
T | Transmissivity | m2/s |
s’ | Continuation of the recording of the drawdown in the control piezometer | m |
Q | Pumping flow rate value that created the initial drawdown | m3/s |
t | Time elapsed from the start of pumping until it stops | s |
t’ | Time counted after this stop | s |
S | The storage coefficient | unitless |
e | The thickness of the aquifer | m |
| Density of water | kg/m3 |
g | gravitational acceleration | m/s2 |
K | The Hydraulic conductivity | m/s |
Np | The piezometric level referring to the edge of the casing | m |
ZTN | The altitude of the natural terrain at the location of the structure | m |
Nmesure | The depth of the water surface measured with the probe | m |
Hd | The height (m) of the casing above ground | m |
RMSE | Root Mean Square Error | unitless |
| The mean | unitless |
| standard deviation | unitless |
I | The index of Nash | unitless |
R | Correlation coefficient | unitless |
ETP | Potential evapotranspiration | mm |
ETR | The real evapotranspiration | mm |
RFU | The reserve easily usable | mm |
R | Runoff | mm |
P | Average annual precipitation | mm |
I | Infiltration | mm |
∆S | Change in water stock | mm |