June 11, 2013, Meeting
Please join us for the next Tucson Chapter meeting, Tuesday, June 11. At the June meeting, Dale Mason with the Arizona Department of Water Resources will present ADWR's recently released update to the Tucson Active Management Area Groundwater Flow Model.
| Location: |
Montgomery and Associates
1550 East Prince Road
Tucson, AZ |
| Social half hour: |
6:00 PM |
| Program: |
6:30 PM |
Mr. Mason has worked for the ADWR since 1988 in the Field Services, Assured and Adequate Water Supply, and Modeling Sections. Mr. Mason is currently a project leader in the ADWR Modeling Unit, with 20 years of experience in groundwater modeling. Mr. Mason also was the co-author of the initial Tucson AMA groundwater flow model publisher in 2006.
Abstract
The Arizona Department of Water Resources (ADWR) Tucson Groundwater flow model was updated in an on-going effort to provide the best tools possible in the long-term management of the water resources in the Tucson Active Management Area (AMA). The model has been updated to simulate conditions from 1940 to 2010 and includes several major upgrades. The upgrades include: a defined bottom layer for the model, the addition of annual stream infiltration distributed along the major drainages, improved historical pumping volumes and distribution, and improved historical agricultural recharge volumes. The model was re-calibrated using the latest well specific head data.
The transient calibration was able to simulate regional water level fluctuations during the 70 year transient model simulation. The model calibration was evaluated by comparing well specific water levels from 1940 to 2010 to simulated heads, time-series simulated heads to observed heads at wells with long-term hydrographs records, and by comparing hand-drawn measured water level contours with model simulated head contours. Approximately 66 percent of the observed heads had a weighted residual error (simulated - observed water level) of ±10 feet or less, and about 97 percent of the weighted residuals were ± 50 feet. The mean residual error (ME) was 3.6 feet, and the mean of the absolute value of the weighted residuals (MAE) was 11.3 feet. The simulated water budget had a zero percent discrepancy between inflow and outflow and closely matched estimated conceptual water budget values.

Fostering Yuma's State Historic Park as a Forum to Discuss the Past, Present and Future of the Colorado River
Wednesday June 19, 2013
Time: 12 - 1:30 p.m.
Location: WRRC, Sol Resnick Conference Room
Speaker: Charles Flynn, Executive Director, Yuma Crossing National Heritage Area
wrrc.arizona.edu/events/brownbag
Unless otherwise noted, all seminars are held at the
Sol Resnick Conference Room
Water Resources Research Center
350 N. Campbell Ave., Tucson
Contact information: Jane Cripps at jcripps@cals.arizona.edu
or 520-621-2526
wrrc.arizona.edu/events/brownbag
On March 12 TH, AHS participated in the Southern Arizona Regional Science and Engineering Fair (SARSEF). Judges on behalf of AHS were Gary Burchard of Metro Water, Brittney Bates of Montgomery and Associates, and Dick Thompson of Tucson Water. The AHS panel presented 20 awards ranging from $20 to $100 for posters K thru 12 grades. Dick Thompson presented the awards in person at the award ceremonies the following Thursday and Friday nights. The winning projects are summarized below:

Rachel Whitaker: Bugs In Water
Arizona Hydrological Society 1st Place - Cash, SciEnTeK-12 Foundation 1st Place

Gallego Basic Elementary School, Kai Sparacin: Got Fresh H2o?
Arizona Hydrological Society 2nd Place - Cash, SciEnTeK-12 Foundation 3rd Place

University High School, Stephen Yao: An Experimental Study Of Vadose Zone Flux Meter
Arizona Hydrological Society 1st Place - Cash, U of A Water Sustainability 1st Place - Cash, United States Navy Award, Stockholm Water Environment Federation Certificate + Nomination, SciEnTeK-12 Foundation Scholarship, I Sweep Certificate + Nomination, SciEnTeK-12 Foundation 1st Place

Flowing Wells High School, Casey Ellwood: Wipeout
Arizona Hydrological Society 2nd Place, National Oceanic & Atmospheric Administration Medal - Certificate, SciEnTeK-12 Foundation 3rd Place

Immaculate Heart Academy, Amanda Minke: Clean Water From Sand, Sun, And Fleas
Arizona Society of Civil Engineers - AZ Branch CERTIFICATE, Association of Women Geologists 1ST PLACE CERTIFICATE, Arizona Hydrological Society 1st Place - Cash, Pima Co Regional Wastewater Reclamation Dept Certificate, SARSEF Director's Award 1st Place, Intel ISEF Observer, SciEnTeK-12 Foundation 1st Place
"NO PICTURE"
Hollinger Elementary School, Group or Class Project - Teacher Manuela Gilbride: Do Liquids Disappear?
Arizona Hydrological Society 1st Place - Cash, Tucson Electric Power 3rd Place, SciEnTeK-12 Foundation 1st Place
"NO PICTURE"
E C Nash School, Group or Class Project - Teacher Kelly Sudac: Frosty Forms
Arizona Hydrological Society 2nd Place - Cash
"NO PICTURE"
Gallego Basic Elementary School, Group or Class Project - Teacher Kathy Pfotenhauer: Soil What?
Arizona Hydrological Society 1st Place - Cash
"NO PICTURE"
Carden Of Tucson, Arjun Rajagopalan: Water Pressure In A Container
Arizona Hydrological Society 2nd Place - Cash
"NO PICTURE"
Robins K-8 School, Reyven Melendez: Clouds - Weather Or Not
Arizona Hydrological Society 1st Place - Cash

Copper Creek Elementary School, Aidan Brown: The Recirculator
Arizona Hydrological Society 2nd Place - Cash
"NO PICTURE"
Ocotillo Ridge Elementary, Collin Wade: Making Water
Arizona Hydrological Society 1st Place - Cash, International School of Tucson 3rd Place, Southwest Gas 1st Place - Cash, SciEnTeK-12 Foundation 1st Place

Summit View Elementary, Carlos Stahlkopff: Absorption In Different Types Of Soil
Arizona Hydrological Society 2nd Place - Cash

Winifred Harelson Elementary School, Quinn Hudson: Can Water Float On Water?
Arizona Hydrological Society 2nd Place - Cash

Legacy Traditional School - NW Tucson, Dylan Tran: Water Evaporation
Arizona Hydrological Society 1st Place - Cash, SciEnTeK-12 Foundation 1st Place

St. Elizabeth Ann Seton, Jacob Landon: GPS Rain Gauge
Arizona Hydrological Society 2nd Place - Cash

Pusch Ridge Christian Academy, Zach Sawyer: Native Sonoran Desert Water Filtration
Arizona Hydrological Society 1st Place - Cash, SciEnTeK-12 Foundation 2nd Place

Pusch Ridge Christian Academy, Keegan Chafin: Help Me! The Salt Is Coming!
Arizona Hydrological Society 2nd Place - Cash, U of A School of Plant Sciences Honorable Mention

Satori Charter School, Michael Hughes: Ground Water Recharge
Arizona Hydrological Society 1st Place - Cash, SciEnTeK-12 Foundation 1st Place

Sonoran Science Academy - Tucson, Julia Kassa: Soil Liquefaction
Arizona Hydrological Society 2nd Place - Cash, SciEnTeK-12 Foundation 2nd Place
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