[GRASSLIST:1366] Re: GRASS integration with MODFLOW

[Eric G . Miller]

On Fri, Jan 16, 1998 at 05:23:12PM +0000, Rick Gagne wrote:
> I am starting up a large urban land use groundwater quality study (40
> km by 60 km study area, 50 m cell size, 3000 wells to be sampled 10
> times over 15 years) in Nova Scotia, Canada, for which GRASS is
> beautifully suited.
> 
> GIS information will include: geology (soil and bedrock lithology,
> chemistry, metamorphic grade, mine locations, known mineral deposits,
> depositional and structural fabric), physical hydrogeology (site well
> construction and geology data, average pumping rates, groundwater
> elevation, seasonal level changes), lake water chemistry, topography,
> precipitation and other climatic data, vegetation, groundwater
> recharge characteristics (derived from other layers), prevailing wind
> direction (study sea spray affects), all available urban land use
> data, any other information useful to the study, plus 40 to 50
> chemical parameters (and various interpretation maps derived
> thereafter).
> 
> I will also need to do 3-D groundwater modeling in the study area
> (perhaps at various scales), and I am thinking of using MODFLOW and
> other related USGS groundwater modeling programs for that purpose. In
> that regard, the only Linux pre-post processor for MODFLOW that I am
> aware of is Uncert (are there others?), which I have not tried yet.
> However, it would be great if I could integrate GRASS with MODFLOW
> somehow to facilitate the study.
> 
> I understand that someone did some work to integrate MODFLOW with
> GRASS (version 3.0?). Does anybody know what may have come of this
> work? Has anyone tried to integrate groundwater models (MODFLOW in
> particular) with GRASS versions 4 or 5?  Finally (a concept question
> for those with knowledge of the GRASS inner workings and direction of
> development), would it be difficult to write code to integrate
> MODFLOW, MODPATH and perhaps other related USGS groundwater migration
> model programs with some future version of GRASS?

I'll try to take a look at the MODFLOW, etc... programs.  I'm thinking
they might have alot of DOS'isms which might make it difficult to
compile under unix boxen.  I have a few colleagues who are familiar with
MODFLOW who could also benefit from such an interface.  Definitely a
worthy companion to grid3 functionality...

-- 
Eric G. Miller <egm2 at jps.net>