SeriesSEE Workshop:
Detecting Distant Drawdowns

Hosted During the 2020 Annual Conference Week  

 
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Tuscany Suites & Casino
255 East Flamingo Road
Las Vegas, NV 89169

To make reservations, please call 1-877-887-2261 and mention Nevada Water Resources Annual Conference. To book reservations online, please visit www.tuscanylv.com and use the code: #0219NEVA

$75 Sun-Thurs
&
$135 Fri & Sat

The room rates are available through January 10, 2020

Tuscany Meeting Room Map

Instructors: Keith Halford, Retired, U.S. Geological Survey & Tracie Jackson, U.S. Geological Survey

SeriesSEE Workshop: Detecting Distant Drawdowns
Small pumping signals can be detected reliably with water-level modeling as implemented in SeriesSEE. For example, drawdowns of less than 0.05 ft were detected routinely beneath Pahute Mesa, Nevada where environmental, barometric and tidal, fluctuations exceed 0.5 ft. Water-level models simulate environmental water-level fluctuations and pumping effects. Environmental water-level fluctuations are simulated by summing individual time-series of barometric pressure, tidal potential, and background water levels. Water levels from background wells, unaffected by pumping, are critical because they are affected by tidal potential–rock interaction, imperfect barometric coupling, seasonal trends, and climatic trends. Pumping schedules are transformed to water-level responses with superposition Theis models. Numerical experiments have confirmed that these Theis transforms closely approximate water-level responses through hydrogeologically complex aquifers.
SeriesSEE is an Excel Add-In for viewing, cleaning, and analyzing time series or geophysical logs. Bad data in series can be identified and removed either conditionally or graphically. Series can be added, subtracted, multiplied, or divided even where measurement frequencies are irregular, different, and asynchronous. Many other tools exist in SeriesSEE that facilitate rapid data reduction and the creation of water-level models.
Water-level models are created interactively with SeriesSEE in a new workbook. Synthetic water levels are simulated with a FORTRAN program where differences between synthetic and measured water levels are minimized with PEST. Model fit is defined by RMS error and evaluated graphically. Estimated drawdowns are the summation of all Theis transforms and differences between synthetic and measured water levels.
The methodology and supporting software in SeriesSEE is documented in publically available articles and reports. The validity of simulating pumping signals in geologically complex environments was demonstrated clearly in the article, “Detecting Drawdowns Masked by Environmental Stresses with Water-Level Models,” http://onlinelibrary.wiley.com/doi/10.1111/gwat.12042/full. The software SeriesSEE has been documented, validated, and distributed through a USGS Techniques and Methods report, http://pubs.usgs.gov//tm/tm4-F4. SeriesSEE is public domain software that can be adapted and used freely.


 

Cancellation Policy: All cancellations must be received in writing and sent to NWRA via fax to 775-473-5473, mailed to P.O. Box 8064, Reno, NV 89507, or e-mailed to nevadawaterresources@gmail.com.  Cancellations received within 7 days of the start of the event will not be refunded, however substitutions are welcome.  All other cancellation requests will receive a refund minus a 25% administrative fee.  If you have purchased the registration with a credit card, the convenience fee is non-refundable.


Date:
Tuesday
February 11, 2020

Time:
8:00 a.m. - 12:00 p.m.

Location:
Tuscany Suites & Casino
255 East Flamingo Road
Las Vegas, NV 89169

Registration by
January 10, 2020:

$100 NWRA Member
$150 Non-Member

Registration after
January 10, 2020:

$150 NWRA Member
$200 Non-Member

Student Registration:
$20

$100 with confirmed
Conference/Symposium Registration


JOIN OR RENEW YOUR NWRA MEMBERSHIP TO SAVE MONEY ON EVENTS

JOIN OR RENEW YOUR NWRA MEMBERSHIP TO SAVE MONEY ON EVENTS