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Tuscon Chapter News Up-coming Monthly Meeting, June 11, 2013WRRC Brown Bag Seminars2013 SARSEF AHS/CAP Awards |
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June 11, 2013, MeetingPlease 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.
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. AbstractThe 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 RiverWednesday June 19, 2013 Unless otherwise noted, all seminars are held at the wrrc.arizona.edu/events/brownbag
2013 SARSEF AHS/CAP AwardsOn 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:
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| Date:
June 11, 2013 For general information about chapter meetings, click here. |
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