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• Verde River Headwaters Field School

  • Start
    4 Jun 2026
  •  
    12:00 PM
  • End
    7 Jun 2026
  •  
    12:00 AM
  • Location
    Little Thumb Butte Bed & Breakfast 1252 Morgan Ranch Road Paulden, AZ 86334

  Register

  The Verde Headwaters Field School is being run by the Flagstaff Chapter of the Arizona Hydrological Society from June 4-7 at various locations in the Paulden, Chino Valley and Prescott area.   The "field school" will cover the following topics:

  • the area’s major drainages (the upper Verde and Granite Creek plus a few others);
  • area watersheds;
  • springs;
  • groundwater conditions; 
  • discussions about the Prescott water supply and management of the Prescott AMA;
  • geology of the area;
  • mine reclamation. 

  Fieldtrip goers can join us for the day (all must pay the $75 fee to be covered by insurance) or stay with us at the unique setting and accommodations of the Little Thumb Butte Bed & Breakfast (reserved for AHS members). You can have a private single room to yourself or share with a friend, park your RV (water/sewer/electricity sites available!), pitch a tent, or have a sleeping cot ready for you in John's ShiftPod superdome! You can also purchase meals from the B&B, brought to you farm-fresh by owner, Ann, and her staff. Gluten free, vegetarian, other diets can be accommodated.

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• Verde Headwaters Field School Sponsorships

  • Start
    4 Jun 2026
  •  
    5:00 PM
  • End
    7 Jun 2026
  •  
    3:00 PM
  • Location
    Little Thumb Butte Bed and Breakfast

  Register

  The Chapter is seeking several sponsors to help cover costs for this amazing trip!

  Sponsor levels include:

  • Verde Headwaters $750 (logo on field trip hat and top-tier in field trip guide; full-page advertisement in field trip guide, logo on registration page and  event Story Map), 
  • Stillman Lake at $500 (logo in field trip guide; ½ page advertisement in field trip guide, logo on registration page and event Story Map) or 
  • Granite Creek at $250 (logo in field trip guide, registration page and event Story Map). 

  Sponsorships will cover costs for van rental(s), fuel, field trip hats, spiral field guide printing costs, tips for the cooks and crew at the bed-n-breakfast. We might also refund the field trip fee for all if we have enough sponsor funds.

  This trip is being run as a break-even event.
  

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• 2026 Annual Beer Tasting Fundraiser

  • When
    10 Jun 2026
  •  
    6:00 PM - 9:00 PM
  • Location
    Lake Pleasant Brewing, 1950 W Rose Garden Ln #130, Phoenix, AZ 85027
  • Spaces left
    49

  Register

  Come join us for the Phoenix Chapter's Annual Beer Tasting Fundraiser!

  The AHS Beer Tasting event is a fundraising opportunity for all individuals, businesses, and water resource leaders who value our incredible resources, Arizona watersheds and its water. The AHS Phoenix Chapter is hosting this beer tasting event to raise funds to support the AHS Foundation endowment for the Herman Bouwer Intern scholarships.

  Two drinks and food are included with ticket price.

  The sponsorship includes a brief description of each organization, company logos and event tickets for the sponsors attending personnel.

  All net proceeds will benefit the AHS Foundation.

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• Tucson Chapter Meeting - June 12, 2026

  • When
    12 Jun 2026
  •  
    6:00 PM - 7:30 PM
  • Location
    Montgomery & Associates, 1550 E Prince Rd
  • Spaces left
    50

  Register

  Join us to hear talks from two U of A hydrology students, Mardy Nadel on Determining site-specific soil screening levels for PFAS at an airport source area and Ben West on Determining site-specific soil screening levels for PFAS at an airport source area.

  If joining on Zoom, the presentation will start at 6:30pm.

  Marcy's Abstract

  Soils impacted by aqueous film-forming foam (AFFF) use at military and civilian airports are a major, ongoing source of per- and polyfluoroalkyl substances (PFAS) in the environment. This study determines site-specific soil screening levels (SSLs) for three PFAS using field and laboratory data from an AFFF source area at U.S. Air Force installation. We apply multiple PFAS-specific approaches: a one-dimensional analytical solution transport model, modified U.S. Environmental Protection Agency (EPA) dilution-attenuation factor (DAF) equation, and field-measured soil and porewater concentrations. The modeling effort is supported by high-resolution soil characterization, including measurements of physical, hydraulic, and geochemical properties. Such SSLs are used to quantify the risk of PFAS leaching to groundwater, which often results in human and environmental exposures. Our PFAS-specific approaches reflect the complexity of PFAS partitioning and vadose zone transport, an area of active research. Differences among the SSLs generated for each PFAS by the different approaches highlight the dominant processes controlling soil retention and mass discharge at this site.

  Ben's Abstract: 

  Droughts have had a growing impact on both natural resources and human infrastructure. In a changing climate drought duration and intensity are both expected to change, and the past 40 years have already shown an unusually large number of droughts of extreme intensity and duration. However, the connections between drought severity and drought recovery are not well understood. This is only further complicated by the fact human operations can influence drought evolution and impacts through a complex system of trade-offs. Our understanding of the trade-offs in water management decision-making and watershed dynamics is extremely limited because most models of human operations make critical simplifications in their representation of the surrounding environment.  Here, we use ParFlow, a fully integrated physical hydrology model, to examine watershed storage and streamflow dynamics during drought with varying levels of water management. ParFlow is well suited for this purpose as it directly represents the vadose zone and its role groundwater-surface water interactions that are crucial to the full picture of watershed dynamics. With ParFlow, we model several idealized watersheds under various drought conditions. Drought conditions are simulated for a baseline scenario (with no human operations), and with different groundwater pumping strategies. By comparing these simulations, we gain important insights into the role of drought duration on recovery as well as the impacts of water management decision-making. We are also able to look at how changed antecedent conditions, either from natural causes such as preceding dry or wet years, or anthropogenic causes such as groundwater depletion due to long term pumping, change drought evolution and recovery. This work could help design drought mitigation strategies that enhance water resource sustainability in an era of increasing drought intensity.

  
  

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• 2026 AHS Annual Symposium

  • Start
    9 Sep 2026
  • End
    11 Sep 2026
  • Location
    High Country Conference Center, Flagstaff AZ

  Register

  Early Bird Pricing will go live on April 20th.

  **Please note, Casino Night registration is automatically included in a FULL Regular Registration ticket. You will only need to purchase this add-on if you would like to invite a partner, if you are a student, or purchased a one-day ticket**

  Cancellation policy: If you cancel before September 2, AHS will refund your registration fee minus a 10% processing fee; from September 3-8, AHS will refund 50% of your registration fee.
  

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• AHS 2026 Symposium A La Carte

  • Start
    9 Sep 2026
  • End
    11 Sep 2026
  • Location
    High Country Conference Center, Flagstaff AZ

  Register

  
  

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• 2026 Symposium: Sponsors & Exhibitors

  • Start
    9 Sep 2026
  •  
    8:00 AM
  • End
    11 Sep 2026
  • Location
    High Country Conference Center, Flagstaff AZ

  Register

  PLEASE READ THE FOLLOWING:

  I understand that my fee includes admission for the following number of attendees, who I must name as GUESTS on this registration form:

  • 1 for Exhibitors and Copper Sponsors
  • 2 for Silver Sponsors
  • 3 for Gold Sponsors
  • 4 for Platinum Sponsors

  I also understand that, in addition to the above GUESTS, I can add one ADDITIONAL ATTENDEE for an extra charge (this will appear as an option during the registration process). 

  Depending on the Registration you choose, please select spots that are available for your level:

  • Platinum and Gold Sponsors (S8–S11),
  • Silver Sponsors (S1-S7 and S12-S16),
  • Premium Exhibitors (P1-P12),
  • Regular Exhibitors (R1-R4 
  • Table Top Exhibitors (T1-T3)

  If we need to cancel your registration because you exceed these limits, you will be charged a 15% cancellation fee!

  You must pay in full by cash, check, or credit card within 30 days to secure your reservation. No refunds for cancellations will be issued after August 11th

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• 2026 Symposium: Event & Other Sponsors

  • Start
    9 Sep 2026
  •  
    8:00 AM
  • End
    11 Sep 2026
  • Location
    High Country Conference Center

  Register

  Each event sponsorship includes one full symposium registration.

  You must pay in full by cash, check, or credit card within 30 days to secure your reservation.
  

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