Please search “Australian groundwater modelling guidelines” for further details.

Check Flow through Porous Media by Harr

In Book "3D Groundwater Modeling with PMWIN", see the examples "5.1.7 Flood in a River" and "5.1.8 Simulation ofLakes". It's possible modelling with Modflow. I'm used model with Visual Modflow.

Hi Khansaa

You could use the HYDRUS model to analyse the flow between the lake and canal.

See http://www.pc-progress.com/en/Default.aspx?HYDRUS-3D to find out more about the HYDRUS model and how to obtain a copy.

You could use radium isotopes and or Rn measurements to estimate submarine groundwater discharge flow into the channel.

See Moore works.

As pointed out by Colleague Kenneth Watts , to model groundwater flow the lake to the canal, you need to know the following before deciding what model to use:

Geometry of lake and canal, including relative elevations of bottoms.

Hydraulic conductivity (K) and thickness of lake bottom material.

Hydraulic conductivity (K) and thickness of canal sides and bottom.

Aquifer geometry (x, y, & z), hydraulic conductivity (Kx,y,z, ), storage coefficient (S) or specific storage (Ss ),  and specific yield (Sy). 

Time-series of elevations of water surfaces in lake, canal, and, if possible, groundwater in aquifer between the lake and canal. I would suggest  time-series monitoring during a period in which stage in either or both water bodies vary.

If the geometry of the lake and canal are is simple (for example, they are parallel) and the aquifer is horizontal, homogeneous and isotopic then you can use the analytical methods (Pls. Refer to Jacob Bear” Groundwater flow ……….”.  However, if the aquifer is heterogeneous and anisotropic then you have to use numerical method: finite difference or finite element depending on the software availability (MODFLOW or FEFLOW).

Whether you are using finite difference or finite element model, make sure that grid dimensions are small enough to represent the geometry of important features. 

Thanks All :)