SSP&A is very excited to be able to host the following course in Bethesda,
Maryland (USA) this September, 2008:

"Building and Applying Analytical Element Models with Examples and Exercises
using Python"

Analytic element models are often refreshingly easy to understand and very
insightful. The best approach to learn the analytic element method is to
implement it in a simple computer program. This may sound daunting, but
using the easy and powerful Python language, it becomes possible for any
hydrogeologist with just a basic understanding of the building blocks of a
computer program. In this new course, you will actually build your own
analytic element model, and have a great time doing it!

The course is taught by Dr. Mark Bakker. Mark has taught for 10 years at
American Universities and now teaches at the Delft University of Technology
in his home country of The Netherlands. In addition, Mark is a consultant
for Kiwa WR in Holland and for WHPA in Bloomington, IN. Mark received his
Ph.D. at the University of Minnesota under the guidance of Prof. Otto
Strack, the originator of the analytic element method. Mark has written a
number of analytic element programs, of which TimML, the free, open-source
analytic element model for steady multi-aquifer flow is the most extensive.
Mark has taught workshops in Python for Hydrologists and used Python in his
Computational Methods class at the University of Georgia, where students
were programming in Python after a basic 2 hour lecture.

For further information on the course, please visit the following web page,
or write to matt@... :

  <http://www.sspa.com/Software/analytic.shtml>
http://www.sspa.com/Software/analytic.shtml

Registration will be limited to 12 attendees. A block of rooms will be
arranged at a nearby hotel for course participants - details will be
provided on the web page soon.

Best wishes -

Matt Tonkin

SSP&A

email:  <mailto:matt@...> matt@...





[Non-text portions of this message have been removed]

I concur, w/Mark -

   Jim provides by far the best technical support I have ever had, far superior
than WHI's Visual MODFLOW.  The main difference is that Vistas does so much
more.  As such the layout is more "complicated" than Visual which has a simple
layout but does far too little.  Although you should realize that Vistas is not
big on 3D animation.  I think this is where Visual exceeds Vistas.  Jim will
answer any questions you may have.  He has a trouble shooting manual, but
honestly if you are not sure take one of his 3-4 day classes they are excellent.

   Mike

Mark Pritzl <Mark.Pritzl@...> wrote:
           No, but if you email them with questions they will respond quickly and
appropriately. I used Visual for 10 years and now I'm teaching myself
(through work with other Hydrogeologists) GV. The transition is not
easy, but worth it. I feel your pain and still stumble with GV. If you find a
different manual, PLEASE let me know.

Best Regards:

Mark Pritzl, Associate Hydrogeologist
Northwest Florida Water Management District
Bureau of Ground Water Management
81 Water Management Drive
Havana, Florida 32333-4712

Office # 850-539-2660
Mark.Pritzl@...

-----Original Message-----
From: groundwater-vistas@...
[mailto:groundwater-vistas@...] On Behalf Of Cole
Sent: Wednesday, February 13, 2008 11:23 AM
To: groundwater-vistas@...
Subject: [groundwater-vistas] GV Training Manual

Has anyone heard of a training manual for GV other than the one

included with the software package (which was written by Jim and his

brother)?

Thanks,

Cole

Dear Member,

Can you please refer me to any relevant literature (case
studies/papers/web resources) pertaining to unsaturated and saturated
groundwater flow modelling to study the impact of rainwater
harvesting structures and artificial recharge structures on
groundwater system.

My apologies for cross-postings.

Thanks & Regards
Kumar
================================================
C. P. KUMAR
Scientist 'E1'
National Institute of Hydrology
Jal Vigyan Bhawan
Roorkee - 247667 (Uttarakhand)
INDIA

Web Page : http://www.angelfire.com/nh/cpkumar/
================================================
Unfold the Goddess Within:
http://groups.yahoo.com/group/Shambhavi/
================================================

No, but if you email them with questions they will respond quickly and
appropriately.  I used Visual for 10 years and now I'm teaching myself
(through work with other Hydrogeologists) GV.  The transition is not
easy, but worth it.  I feel your pain and still stumble with GV.  If you find a
different manual, PLEASE let me know.

Best Regards:

Mark Pritzl, Associate Hydrogeologist
Northwest Florida Water Management District
Bureau of Ground Water Management
81 Water Management Drive
Havana, Florida  32333-4712

Office # 850-539-2660
Mark.Pritzl@...


-----Original Message-----
From: groundwater-vistas@...
[mailto:groundwater-vistas@...] On Behalf Of Cole
Sent: Wednesday, February 13, 2008 11:23 AM
To: groundwater-vistas@...
Subject: [groundwater-vistas] GV Training Manual



Has anyone heard of a training manual for GV other than the one

included with the software package (which was written by Jim and his

brother)?

Thanks,

Cole

Has anyone heard of a training manual for GV other than the one
included with the software package (which was written by Jim and his
brother)?

Thanks,

Cole

A 3 day PEST course will be held in Bethesda, Maryland, USA, the week of
April 7th, 2008. Recent PEST development has focused on stabilizing the
inverse problem for highly-parameterized models and evaluating model
predictive error. In doing so, the methods embodied in PEST take into
account the null space contribution to potential predictive error. All
course participants will receive a CD with a seven comprehensive PEST
workshops. Participants will also receive the latest version of PEST and all
of its support utilities. The workshops show how to use these utilities. For
more information on the course, including registration, please visit the
following web page.



http://www.sspa.com/pest/training.html



Current course registration fees reflect a 10% "early-bird" registration
discount available through January 31st, 2008. Fees will rise to the full
rate February 1st, 2008. Please write to pest@... with any questions
about the course.



Best wishes ---

Matt Tonkin, SSP&A

Moderator, pest@...



[Non-text portions of this message have been removed]

Hi everybody,

I am learning GW Vistas and I want to have access to more learning
resources beyond the material you can find in the program tutorial.
Do you know if there are further learning resources somewhere else?

Thanks in advance
XAVIER

Hi Does anyone have a model in Vistas Verion 4 or 5 that runs SEAWAT?
I have the opportunity to do some SEAWAT modeling.  I have done quite a
bit w/MODFLOW and MT3D but have not spent time learning SEAWAT, so I
thought if I could get me hands on a running model I could gleam what I
need from the model to set up my own.

If any one can be of assistance it would be greatly appreciated.  This
could also include any tutorial that may be available.

Mike

Hi: This is a brief email to make some announcements related to the PEST
freeware:

September Course, Copenhagen, 2007:  Spaces are still available for the 1.5
day PEST course before the MODELCARE conference, in Copenhagen, Denmark,
September 8-9, 2007. All course participants will receive a CD with a seven
comprehensive PEST workshops. Participants will also receive the latest
version of PEST (Version 11.3 described below) and all of its support
utilities. For more information on the course, including registration,
please visit  <http://www.sspa.com/pest/training.html>
http://www.sspa.com/pest/training.html or write to  <mailto:pest@...>
pest@....

Release of PEST version 11.3: The new version of PEST includes many new
additions including many new utilities; such as JACTEST, which makes it easy
to check the integrity of derivatives computed for a model; two global
optimizers (CMA and SCE), both of which can be used interchangeably with
PEST and both can undertake model runs in parallel for maximum efficiency;
programs that implement a new "null space Monte Carlo" technique for
nonlinear uncertainty analysis; and FORTRAN 90 modules (including source
code) that allow you to write software which communicates with a model like
PEST does, and to parallelize model runs.

See the PEST web site at  <http://www.sspa.com/pest>
http://www.sspa.com/pest for more details

Dear Member,

Based upon the information received, I have initiated preparing the
directory of groundwater hydrologists. You can access the directory at

http://tech.groups.yahoo.com/group/gwmodel/files/

I again request the remaining groundwater hydrologists in this group
to please forward the following details to my e-mail address
cpkumar@... at your earliest convenience.

* Name
* Official Address
* Phone Number
* FAX Number
* E-mail Address
* Website Address
* Area(s) of Specialization

If you press the reply button, then ensure that default group address
is replaced by cpkumar@... in the "To" field, otherwise the
message will go for posting to entire group.

Regards
Kumar
==================================================
C. P. KUMAR
Scientist 'E1'
National Institute of Hydrology
Jal Vigyan Bhawan
Roorkee - 247667 (Uttarakhand)
INDIA

Web Page : http://www.angelfire.com/nh/cpkumar/
==================================================

Dear Member,

I intend to prepare a directory of groundwater hydrologists. After
compilation, I can upload the directory in the Files section of
gwmodel group (http://tech.groups.yahoo.com/group/gwmodel/files/), so
that anyone can refer to it whenever needed. I therefore request all
the groundwater hydrologists in this group to please forward the
following details to my e-mail address cpkumar@... at your
earliest convenience.

********************************
Name
Official Address

Phone Number
FAX Number
E-mail Address
Website Address

Area(s) of Specialization
********************************

If you press the reply button, then ensure that default group address
is replaced by cpkumar@... in the "To" field, otherwise the
message will go for posting to entire group.

Regards
Kumar
==================================================
C. P. KUMAR
Scientist 'E1'
National Institute of Hydrology
Jal Vigyan Bhawan
Roorkee - 247667 (Uttarakhand)
INDIA

Web Page : http://www.angelfire.com/nh/cpkumar/
==================================================

***NEW LINKS AT THE AQTESOLV USERS' GROUP***

Members will find 21 new links to free hydrological publications at
the AQTESOLV Users' Group. Other link categories include free
hydrological software and calculators, hydrological discussion groups
and free hydrological data sources. We will continue to update these
links from time to time, so check back often.

If you have any relevant links to contribute to these categories,
please contact us at AQTESOLV-owner@yahoogroups.com.

Best regards,
Glenn M. Duffield
Developer of AQTESOLV
HydroSOLVE, Inc.
AQTESOLV: http://www.aqtesolv.com/
HydroSOLVE: http://www.hydrosolveinc.com/
Aquifer Test Forum: http://www.aquifertest.com/
AQTESOLV Users' Group: http://groups.yahoo.com/group/AQTESOLV/
Bookstore: http://www.aquifertest.com/forum/bookstore.htm

Please find below information on a course focused on model calibration and
uncertainty analysis using PEST.

Apologies for any double postings.

Regards,

Matt Tonkin

  <mailto:pest@...> pest@...

Calibration and Predictive Uncertainty Analysis Using PEST, Minneapolis,
Minnesota, April 16-18, 2007.

Watermark Numerical Computing will conduct a three-day short course in
Minneapolis, Minnesota.  The instructors will be Dr. John Doherty, the
author of PEST, Matthew Tonkin (SSP&A), and Dave Dahlstrom (Barr Engineering
Company). Course Pricing includes a 10% discount for early registration
(before March 1, 2007). A block of rooms has been reserved at the very
comfortable LeBourget Hotel in Bloomington, MN.

For more details about the course, travel arrangements, or to register for
the course using PayPal secure online payment, go to
<http://www.sspa.com/PEST/training.html>
http://www.sspa.com/PEST/training.html. For any detailed questions regarding
the course, write to  <mailto:pest@...> pest@.... For detailed
questions regarding travel or logistics, please write to Sue Nelson at Barr
Engineering Co. ( <mailto:snelson@...> snelson@... ).

The PEST Mailing List

Further information about PEST can be found by contacting
<mailto:PEST@...> PEST@.... PEST has been freeware since February
2001, and is available for download together with accompanying utility
software from  <http://www.sspa.com/PEST> http://www.sspa.com/PEST.

Greetings!

You and your colleagues are cordially invited to attend an exciting
three-day continuing education workshop on aquifer testing methods and
data analysis techniques featuring AQTESOLV at the University of San
Diego in San Diego, California, USA on February 27 through March 1, 2007.

For this course, we are privileged to have Dr. Shlomo P. Neuman from
the University of Arizona join us as a special guest lecturer. He will
discuss his important contributions to the pumping test literature
including the Neuman-Witherspoon (1972) ratio method and the Neuman
(1972; 1974; 1975) method for unconfined aquifers with delayed gravity
response.

Dr. Jim Butler, the 2007 NGWA Darcy Lecturer, will be with us again to
present cutting-edge concepts for designing, conducting and analyzing
slug tests. In addition, Glenn M. Duffield, the developer of AQTESOLV,
will lead hands-on classroom sessions in the computerized analysis of
field data with the AQTESOLV software.

We offer the only courses that feature hands-on computerized data
analysis with AQTESOLV, the world's leading software for the analysis
of aquifer tests (http://www.aqtesolv.com/).

WORKSHOP TITLE:
Advanced Aquifer Testing Procedures Featuring AQTESOLV: New Concepts,
Field Methods and Data Analysis Procedures

WHERE:
Manchester Executive Center at the University of San Diego in San
Diego, California, USA

WHEN:
February 27 through March 1, 2007 (3 Days)

PRESENTED BY:
Midwest Geosciences Group

CONTINUING EDUCATION UNITS:
2.4 CEUs by University of San Diego

CEUs pre-approved for MA LSPs, CT LEPs, TX CAPMs, IA CGWPs, OK USTCs,
DE PGs

COURSE SYNOPSIS:
Conducting pumping tests and slug tests in complex hydrogeologic
settings such as heterogeneous or fractured media is a key element to
site characterization, water resources assessment and remediation
system design; however, poorly planned aquifer testing programs often
lead to suspect data or unanswered questions after the field work is
complete. Even when you are confident of the geologic conditions, you
may have difficulty designing effective tests, running field equipment
or selecting the best available model to analyze the test data. When
can you turn to improve your approach and skills for aquifer testing?

Midwest GeoSciences Group can help! We have designed a powerful
three-day course on aquifer testing design, field methods and data
analysis techniques featuring AQTESOLV. This course will provide you
with the knowledge to master pumping tests and slug tests from
beginning to end. Gain an advantage by learning up-to-date methods and
procedures for designing, conducting and analyzing aquifer tests.

For complete course details, please visit the Midwest GeoSciences web
site at http://www.midwestgeo.com/.

INSTRUCTORS:
Jim Butler, Ph.D., Kansas Geological Survey and author of "The Design,
Performance, and Analysis of Slug Tests"

Glenn M. Duffield, president of HydroSOLVE, Inc. and author of AQTESOLV

Shlomo P. Neuman, Ph.D., University of Arizona and author of numerous
important contributions to the analysis of pumping tests

As our special guest lecturer for this course, Dr. Neuman will bring
his unique perspective on state-of-the-art methods for the analysis of
pumping tests in unconfined and multiaquifer systems. He will discuss
his landmark contributions to the literature on the estimation of
aquitard properties using the Neuman-Witherspoon (1972) ratio method
and his recent ground-breaking work on the role of 3D
saturated/unsaturated flow in the analysis of unconfined aquifers.

REGISTRATION:
Register before February 6, 2007 to take advantage of the early
registration rate of US$980!

Register on-line at http://www.midwestgeo.com/upcomingcourse.htm

Registrants are encouraged to bring laptop computers to use during the
course. Computers may be rented prior to February 6, 2007 for an
additional fee of $300.

Those who attend the course will receive a special discount on the
purchase of AQTESOLV.

Registrations accepted on a first-come, first-served basis.

QUESTIONS/MORE INFORMATION:
Visit us at the Midwest GeoSciences Group web site
(http://www.midwestgeo.com) or contact Dan Kelleher (dan@...).

Kind regards,
Glenn M. Duffield
HydroSOLVE, Inc.
AQTESOLV: http://www.aqtesolv.com/
HydroSOLVE: http://www.hydrosolveinc.com/
Aquifer Test Forum: http://www.aquifertest.com/
AQTESOLV Users' Group: http://groups.yahoo.com/group/AQTESOLV/
Bookstore: http://www.aquifertest.com/forum/bookstore.htm

Please find below a brief announcement for a parameter estimation and
uncertainty analysis course to be held in the USA in 2007.
Apologies for any double postings, best wishes,

Matt Tonkin
SSP&A
matt@...

		 Calibration and Predictive Uncertainty Analysis Using PEST,
		 Minneapolis, Minnesota, April 16-18, 2007.

		 Watermark Numerical Computing will conduct a three-day short
course in Minneapolis, Minnesota.  The instructors will be Dr. John Doherty,
the author of PEST, Matthew Tonkin (SSP&A), and Dave Dahlstrom (Barr
Engineering Company). Course Pricing includes a 10% discount for early
registration (before March 1, 2007). A block of rooms has been reserved at
the very comfortable LeBourget Hotel in Bloomington, MN.

		 This intensive short course will instruct participants on
the automated calibration of environmental models, and on the analysis of
the predictive uncertainty associated with such models.  The principal
instructor is the developer of PEST, the industry standard software package
for model-independent, automated calibration and predictive uncertainty
analysis.  This short course will focus upon the use of PEST, including the
new capabilities added to Versions 9 and 10.
		 What you will learn
		 The course will include a thorough coverage of the theory
and applications of nonlinear parameter estimation techniques in the
calibration of different types of models. There is also a strong practical
aspect of the course.  Participants will gain hands-on experience in the use
of PEST, including its advanced regularization and predictive analysis
features. Experience will be gained in the use of these features in the
calibration of groundwater flow and transport models, surface water quality
and quantity models, as well as other types of models including a vadose
zone model and a biological growth model.

		 Course Details and Registration
		 For more details about the course, travel arrangements, or
to register for the course using PayPal secure online payment, go to
http://www.sspa.com/PEST/training.html. For any detailed questions regarding
the course, write to pest@.... For detailed questions regarding travel
or logistics, please write to Sue Nelson at Barr Engineering Co.
(snelson@... ).

		 Information about PEST plus technical support can be found
by writing to pest@... <mailto:pest@...> . This account was
established for PEST users to obtain information on courses and software
updates. The account is used to circulate occasional brief information. To
be added to this mailing list send an email to pest@... with
"subscribe" as the subject. To ensure you receive no future emails, please
write to pest@... with the subject heading "unsubscribe".

You are cordially invited to attend an intensive two-day aquifer
testing short course in Ft. Collins, CO, USA on October 17 and 18, 2006.

TITLE:
Aquifer Testing for Improved Hydrogeologic Site Characterization
Featuring AQTESOLV and the In-Situ Level TROLL

LOCATION:
In-Situ, Inc. Headquarters
Ft. Collins, CO, USA

DATES:
October 17 and 18, 2006

COURSE INSTRUCTORS:
Glenn M. Duffield, HydroSOLVE, Inc., developer of AQTESOLV

James J. Butler, Jr., Kansas Geological Survey, author of "The Design,
Performance, and Analysis of Slug Tests"

David Wardwell, In-Situ, Inc., groundwater application specialist

CONTINUING EDUCATION UNITS:
Continuing Education Units (CEUs) and a Course Completion Certificate
will be administered by the Colorado School of Mines.
16 Contact Hours
1.6 CEUs

COURSE SYNOPSIS:
Conducting aquifer tests in complex hydrogeologic settings such as
heterogeneous or fractured media often leads to suspect data or
unanswered questions after the field work is complete. Even when you
are confident of the geologic conditions, you may have difficulty
designing effective aquifer tests, running field equipment, or
selecting the best available model to analyze the test data. Where can
you turn to improve your approach and skills for hydrogeologic site
characterization?

Midwest GeoSciences Group can help! We have designed a powerful
two-day training course on aquifer testing design, field methods, and
data analysis techniques featuring AQTESOLV (http://www.aqtesolv.com)
and the In-Situ Level TROLL® (http://www.in-situ.com). This course
will provide you with the knowledge to master aquifer testing from
beginning to end--using world-class field equipment and aquifer test
analysis software.

This course will teach you state-of-the-art methods and procedures for
designing, conducting, and analyzing aquifer tests. For more
information on the course, please visit the Midwest Geosciences Group
(http://www.midwestgeo.com).

TESTIMONIALS FROM PREVIOUS PARTICIPANTS:
"These are the guys who literally wrote the book - excellent course,
very helpful, and cutting edge."
Paul Blubaugh, Michael Pisani & Associates, Inc.

"This [is] the best course that I've ever attended and I look forward
to future course offerings. Excellent!"
Mark Larson, Larson & Associates

"I enjoyed the course. Excellent insight and feedback with informative
discussions."
Jason Whitman, Shaw Environmental

REGISTRATION:
Register before September 15, 2006 to take advantage of the early
registration rate of $750.

Online: http://www.midwestgeo.com
Phone: 800.446.7488 ext 0
Fax: 970.498.1598 (Attn: Jody Burrows)
Mail your registration form to:
In-Situ, Inc.
Attn: Jody Burrows
221 East Lincoln Avenue
Ft. Collins, CO 80524

QUESTIONS:
If you have technical questions about the course, contact Dan Kelleher
at either 763.607.0092 or dan@.... For registration and
travel questions, please contact Jody Burrows at 800.446.7488 ext. 0
or jburrows@....

Regards,
Glenn

Glenn M. Duffield
HydroSOLVE, Inc.
AQTESOLV: http://www.aqtesolv.com/
Aquifer Test Forum: http://www.aquifertest.com/
HydroSOLVE: http://www.hydrosolveinc.com/
Users Group: http://groups.yahoo.com/group/AQTESOLV/

You are invited to visit the AQTESOLV Users Group at

http://groups.yahoo.com/group/AQTESOLV/

to find over 40 links to free hydrological publications including
topics such as aquifer testing and groundwater modeling.

Please send a message to AQTESOLV-owner@yahoogroups.com if you would
like to contribute a link to this list.

Many thanks,
Glenn

AQTESOLV v4.0 now available!
AQTESOLV: http://www.aqtesolv.com/
Aquifer Test Forum: http://www.aquifertest.com/forum/
Bookstore: http://www.aquifertest.com/forum/bookstore.htm

Apologies for double postings:  Please find below a brief announcement for a
parameter estimation and uncertainty analysis course to be held in the San
Francisco this year. Please note that the June 30th deadline for the 10%
‘early bird’ registration discount is looming!

Best wishes, Matt Tonkin ( pest@... <mailto:pest@...> )

Calibration and Predictive Uncertainty Analysis Using PEST, San Francisco:
September 2006
In collaboration with the Groundwater Resources Association of California
(GRAC) the third annual California PEST Course will be presented in San
Francisco, September 13-15, 2006.   The instructors will be Dr. John
Doherty, the author of PEST, and Matt Tonkin. Early-bird Discount: receive a
10% discount by signing up before June 30th, 2006.
Wine-and-Cheese Reception: What better way to get to know your classmates
and the instructors than during a wine-and-cheese social, the night before
the hard work begins! (included in the course registration fee).

For more details go to http://www.sspa.com/PEST/training.html
<http://www.sspa.com/PEST/training.html>  or to register for the course,
visit http://www.grac.org/pest.html <http://www.grac.org/pest.html>

The PEST Mailing List
Information about PEST can be found through PEST@...
<mailto:PEST@...> : This account was established for users to obtain
info on courses and updates. The account is occasionally used to circulate
update info. PEST has been free since Feb 2001, and is available together
with utility software from http://www.sspa.com/PEST
<http://www.sspa.com/PEST>





[Non-text portions of this message have been removed]

Please find below a brief announcement for a parameter estimation and
uncertainty analysis course to be held in the UK and USA this year.
Apologies for any double postings, best wishes,

Matt Tonkin ( pest@... <mailto:pest@...> )

Calibration and Predictive Uncertainty Analysis Using PEST, San Francisco,
Fall, 2006
In collaboration with the Groundwater Resources Association of California
(GRA) the third annual California PEST Course will be presented in San
Francisco, September 13-15, 2006.   The instructors will be Dr. John
Doherty, the author of PEST, and Matthew Tonkin. Early-bird Discount:
receive a 10% discount by signing up before June 30th, 2006. Wine-and-Cheese
Reception: What better way to get to know your classmates and the
instructors than during a wine-and-cheese social, the night before the hard
work begins (included in the course registration fee).

For more details go to http://www.sspa.com/PEST/training.html
<http://www.sspa.com/PEST/training.html>  or to register for the course,
visit http://www.grac.org/pest.html <http://www.grac.org/pest.html>

The PEST Mailing List
Information about PEST can be found through PEST@...
<mailto:PEST@...> : This account was established for users to obtain
info on courses and updates. The account is occasionally used to circulate
update info. PEST has been free since Feb 2001, and is available together
with utility software from http://www.sspa.com/PEST
<http://www.sspa.com/PEST>





[Non-text portions of this message have been removed]

If you're sure the amounts of water coming in and going out are VERY close to
equal in a steady state simulation, then try the GMG solver. It closed much more
definitively than the PCG2 solver for me in a recent basin simulation with SFR1.
PCG2 is a great workhorse, but it just can't terminate on some problems even
when it's "done".




[Non-text portions of this message have been removed]

I've encountered the same problem for a recent model simulation using
the Stream Flow Routing Package.
I've tried to modify solver parameters but without success ...

If the model mass balance error is acceptable, as it was in my case, the
answer obtained from other fellow using GW, that is pointed also by on
line help of GW (see below), is to force closure.


Bye,

Stefano Menichetti


...
The PCG2 solver has the annoying tendency to meet the closure criteria
for both head and flux (residual) within outer iterations but not
between successive outer iterations.  This results in the model
iterating until the maximum number of outer iterations has been reached
or you press the converge or abort buttons on the MODFLOWwin32 interface.

ESI has added a modification to the PCG2 solver in MODFLOWwin32 to
automatically force convergence in this situation.  You simply specify
the maximum number of consecutive PCG2 outer iterations achieving
closure and recreate your MODFLOW data files.  The next time you run
MODFLOWwin32, the model will converge automatically without the need to
press the converge button or the model runs out of outer iterations.
You specify this option by selecting Model->MODFLOW->Solver Options.
The last line of the dialog specifies the maximum number of outer
iterations achieving closure.

Be sure to check the mass balance error before trusting your results!
By forcing convergence, you may not have a valid simulation.
...

Heydinger, Andrew G. wrote:

>I am trying to conduct a steady state simulation of a three-layer system
>where the top layer pinches out.  I have checked my simulation and
>removed error message many times but I continue to get a convergence
>problem.  The solution for heads will not converge.
>
>Can someone suggest what the problem is or what a fix would be?
>
>Andrew

I am trying to conduct a steady state simulation of a three-layer system
where the top layer pinches out.  I have checked my simulation and
removed error message many times but I continue to get a convergence
problem.  The solution for heads will not converge.

Can someone suggest what the problem is or what a fix would be?

Andrew

This is a brief email to provide information on the upcoming model
calibration and uncertainty analysis course – using PEST – in late summer
2006.
Regards – Matt Tonkin
pest@... <mailto:pest@...>

Calibration and Predictive Uncertainty Analysis Using PEST, San Francisco,
Fall, 2006
In collaboration with the Groundwater Resources Association of California
(GRA) the third annual California PEST Course will be presented at the Savoy
Hotel in San Francisco, September 13th to 15th, 2006. The instructors will
be Dr. John Doherty, the author of PEST, and Matt Tonkin.

For more details visit http://www.sspa.com/PEST/training.html
<http://www.sspa.com/PEST/training.html>  or to register for the course,
visit http://www.grac.org/pest.html <http://www.grac.org/pest.html> .

Further info about PEST can be found at pest@... <mailto:pest@...>
. This account is used to circulate occasional information on courses and
software updates. PEST has been freeware since February 2001 and is
available at http://www.sspa.com/PEST <http://www.sspa.com/PEST> .



[Non-text portions of this message have been removed]

GWV4 has an input screen for creating tributaries in the stream
package. On the right side of the input screen are listed tributary 1,
tributary 2,... and a space to enter a number. What number goes into
the tributary entry. The users manual and help section omit any
reference to these tributary entries.

I had some problems using the UTCHEM in GMS 5.1 and 6.0. I intended to
model a TCE spill in an artificial aquifier and for the shape of the
plume it doesn't look like a DNAPL spill.

I hear that some researcher, Zaluski et al. used a UTCHEM GUI version
but I am unable to plot the results using tecplot. In theory, there is
a chance to use Surfer or Tecplot in the GUI version but I did not get
results using Tecplot, which I have.

Any input is going to be greatly appreciated

Dear Sir/Madam
I would like to prepare the input files of Modflow (PM5.1)
externally (by another application). The input files are
*.con,*.htc,*.lea and so on.

It's done now, but a problem has occured. In short, Modflow doesn't
look at my input files - bas.dat, bcf.dat and etc. I found out that
I should "regenerate input files" before running modflow.
This may be done by ticking the relative checkbox in run dialog,
while running modflow manually.
1- Is there any way to enforce Modflow to regenerate input files
automatically? (a switch, a preferences or ...)
2- If not, what are the format of these files. (Fortunately they are
text files).

Sincerely,

Last call! - spaces are still available for two parameter estimation and
uncertainty analysis course to be held in the UK and USA this summer.
Best wishes,
Matt Tonkin, SSP&A
matt@...

Courses: Model Calibration and Predictive Uncertainty using PEST
Shrewsbury, England, September 13-15, 2005
Stony Brook, Long Island, NY, September 19-21, 2005 (near MacArthur Airport
and Port Jefferson)

Principal Instructor: Dr. John Doherty (author of PEST)
Guest Instructor: Jim Rumbaugh (author of Groundwater Vistas) (New York
course only)
Assistant Instructor: Matt Tonkin

This intensive course instructs participants on the automated calibration of
environmental models, and the analysis of the predictive uncertainty
associated with such models.  The principal instructor is the developer of
PEST, the industry standard package for model-independent, automated
calibration and predictive uncertainty analysis.  The course focuses on the
use of PEST, including the new capabilities added to Versions 8 and 9 this
year. The course includes thorough coverage of the theory and application of
nonlinear parameter estimation techniques in the calibration of different
types of models. There is a strong practical aspect of the course -
participants gain hands-on experience in the use of PEST, including its
advanced regularization and predictive analysis features, in the calibration
of groundwater flow and transport models, surface water quality and quantity
models, as well as other types of models including a vadose zone model and a
biological growth model.

Course Details and Registration
For detailed information on course content visit
www.sspa.com/pest/training.html to download a prospectus, or write to
pest@....

To register on-line for the New York course please visit
www.sspa.com/pest/training.html
To register on-line for the UK course please visit
http://www.esinternational.com/training/CourseDetail.asp?course_id=49

Information about PEST can be found at pest@.... This account was
established for PEST users to obtain information on courses and software
updates. The account is used to circulate occasional information. To be
added to the PEST list write to pest@... with the subject "subscribe".

Please find below an announcement for the release of V10 of PEST and
associated UK and USA courses in parameter estimation and uncertainty
analysis.
Apologies for any double postings, best wishes,
Matt Tonkin, SSP&A, matt@...




PEST Version 10 Beta Release

PEST v10 will be released later this year. A beta version can be downloaded
from ( http://www.sspa.com/pest/download.html) for those interested in
exploring recent developments in model predictive uncertainty analysis.
Enhancements to the capabilities of PEST in v10 include:

* PEST’s SVD-assist scheme has been enhanced, enabling regularized inversion
to be used with highly parameterized models with efficiencies commensurate
with traditional parameter estimation.
* PEST’s predictive analyser is more powerful, with an improved line-search
algorithm and added functionality to encompass the effects of predictive
noise on predictive variability.
* A greatly expanded suite of utility software supports:
	 * Comprehensive post-processing of PEST results including analysis and
plotting of the resolution matrix and other by-products of the regularized
inversion process.
	 * Quantification of the contribution to pre- and/or post-calibration error
variance of important model predictions by individual parameters or
different parameter types.
	 * Data acquisition analysis - assess the value of making extra measurements
of system state (e.g., water level) or of system properties (e.g.,
transmissivity) in terms of predictive error variance reduction, in advance
of acquiring those data.

Moore and Doherty (Water Resources Research, May 2005) show that traditional
predictive uncertainty analyses can underestimate true variability by
neglecting complexity that it is beyond the ability of the calibration
process to capture. PEST Version 10 provides access to the methodologies
presented in that paper that support the analysis of predictive error
variance as an adjunct to regularized inversion.

Courses: Places are still available at the upcoming PEST courses in the UK
and USA
Principal Instructor:       Dr. John Doherty (author of PEST)
Guest Instructor:            Jim Rumbaugh (author of Groundwater Vistas) (NY
course only)
Assistant Instructor:       Matt Tonkin (SSPA)
For more information on the courses visit:
http://www.sspa.com/pest/training.html
To register on-line for the UK course visit:
http://www.esinternational.com/training/CourseDetail.asp?course_id=49
To register on-line for the NY course visit:
www.sspa.com/pest/training.html
Information about PEST plus technical support can be found by writing to
pest@... <mailto:pest@...> . This account was established for PEST
users to obtain information on courses and software updates. The account is
used to circulate occasional information. To be added to this list write to
pest@... with "subscribe" as the subject. To ensure you receive no
future emails write to pest@... with “unsubscribe” as the subject.



[Non-text portions of this message have been removed]

Hello,

I created the necessarty files for a run with modflow and MT3DMS in
Groundwater Vistas. But now I want to run a SEAWAT simulation, and
that isn't working as I want. I followed the GroundWaterVistas manual
and installed the latest seawat version.

I'll try to explain my error...
In the seawat screen, I got an error in Stress Period 1, that says:
forrt1: severe (29): file not found, unit 40, file C:\gwv4\models\fort.40
Then there are some colums with 'image' 'pc' 'routine' 'line' and
'source'. The three latest colums all contain the words unknown.

Is there someone who had the same problem or perhaps just could tell
me what the problem is ?
Thanks a lot,
Best Regards,

Liesbeth

Please find below a brief announcement for a parameter estimation and
uncertainty analysis course to be held in the UK and USA this year.
Apologies for any double postings, best wishes,
Matt Tonkin
SSP&A
matt@...

Courses: Model Calibration and Predictive Uncertainty using PEST
Shrewsbury, England, September 13-15, 2005
Stony Brook University, Long Island, New York, September 19-21, 2005

Principal Instructor: Dr. John Doherty - author of PEST
Guest Instructor: Jim Rumbaugh (author of Groundwater Vistas) (New
York course only)
Assistant Instructor: Matt Tonkin

This intensive short course will instruct participants on the automated
calibration of environmental models, and on the analysis of the predictive
uncertainty associated with such models.  The principal instructor is the
developer of PEST, the industry standard software package for
model-independent, automated calibration and predictive uncertainty
analysis.  This short course will focus upon the use of PEST, including the
new capabilities added to Versions 8 and 9.
What you will learn
The course will include a thorough coverage of the theory and applications
of nonlinear parameter estimation techniques in the calibration of different
types of models. There is also a strong practical aspect of the course.
Participants will gain hands-on experience in the use of PEST, including its
advanced regularization and predictive analysis features. Experience will be
gained in the use of these features in the calibration of groundwater flow
and transport models, surface water quality and quantity models, as well as
other types of models including a vadose zone model and a biological growth
model.

Course Details and Registration
For more detailed information on the content of the courses please visit
www.sspa.com/pest/training.html to download a detailed course prospectus, or
write to pest@... an email account dedicated to PEST and maintained by
Matt Tonkin (co-instructor).

To register on-line for the New York course please visit
www.sspa.com/pest/training.html
To register on-line for the UK course please visit
http://www.esinternational.com/training/CourseDetail.asp?course_id=49

Information about PEST plus technical support can be found by writing to
pest@... <mailto:pest@...> . This account was established for PEST
users to obtain information on courses and software updates. The account is
used to circulate occasional brief information. To be added to this mailing
list send an email to pest@... with "subscribe" as the subject. To
ensure you receive no future emails, please write to pest@... with the
subject heading "unsubscribe".




[Non-text portions of this message have been removed]