Hallo,

General head boundary is better because Constant head boundary conditions can
have a significance influence on the results of a simulation and may lead to
unrealistic predictions, particularly when it is used in locations close to
the study area.

Thank u

S. Halder


--- On Wed, 9/7/08, rezasaghravani <rezasaghravani@...> wrote:

From: rezasaghravani <rezasaghravani@...>
Subject: [visual-modflow] Boundary Conditions
To: visual-modflow@...
Date: Wednesday, 9 July, 2008, 8:27 PM

Hello everyone,

I have 6 wells in study area that i want evaluation amount of
phosphorus as contamination and then simulate the situation of
groundwater contamination in future for example 20 or 50 years later.
i have problem when i wanted to select boundary conditions. two kind of
boundary conditions are existed. 1) constant head boundary condition 2)
General head boundary condition. which one better? or shall i select
both of them?