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Meetings & Events

If you would like to present at a future chapter meeting, contact us at [email protected]. Note that we can no longer issue refunds for cancellations; in addition, you must pay in advance — we cannot take payments at the door or invoice you after an event.

May Events

June Events

Darcy Lecture – Steven P Loheide II, PhD

On June 3rd from 10 – 11 am, the National Ground Water Association is offering a free webinar to NGWA members and non-members.  The webinar features this year’s Darcy Lecture, Steven P Loheide II, PhD. 

Dr. Loheide will speak on how groundwater dependent ecosystems depend on groundwater to thrive.  Groundwater dependent ecosystems include wetlands and riparian forests that border streams and are well recognized in arid regions where lush vegetation may only exist where shallow groundwater is accessible to plant roots. However, in humid, temperate regions it’s often assumed that forests do not rely on groundwater because precipitation is typically sufficient to meet the plant water demand.  His research tested this assumption by quantifying groundwater’s influence on tree growth and transpiration in northern humid forests with sandy soils. Time-series of groundwater levels show that groundwater levels fall during the daylight hours when transpiration occurs and recover during nighttime periods in some of the observation wells were monitored.  The research used these diurnal groundwater fluctuations to quantify groundwater consumption and found that northern Wisconsin’s forests consume groundwater when and where it is within 3m of the land surface. For more information click here.

Furthermore, tree growth response was analyzed by coring trees and measuring annual tree ring increments. The results were that trees in regions with shallow groundwater had up to twice as much growth as indicated by tree rings compared to regions where groundwater was deeper than 5m.  Lastly, remote sensing techniques were employed that compared vegetation indices during wet and dry periods and mapped the degree of groundwater influence across the study area.  Counter to conventional wisdom, this research demonstrates that shallow groundwater subsidizes evapotranspiration even in humid forests and enhances forest productivity. Recognition of forests as groundwater users is important in guiding sustainable water and forest management decisions in the region.

Register Here

2026 Annual Beer Tasting Fundraiser

June 10th at Lake Pleasant Brewing Company

The Arizona Hydrological Society (AHS) Phoenix Chapter is hosting a beer tasting event to raise funds to support the AHS Foundation endowment for the Herman Bouwer Intern scholarships. Sponsorships are available! All net proceeds raised during the event will go to the AHS Foundation. The AHS Phoenix Chapter will get an update on current drought and precipitation conditions, as presented by SRP employees. Guests will be treated to current chapter’s activities, a short presentation, dinner (BBQ) and Lake Pleasant Brewing Company’s outstanding craft beers. The price of admission will include 2 beers and food.

 

Cost

AHS Member/Non-member: $40
Student: $20

Sponsorships are also available:

Tier 1: $500 Sponsorship

Sponsorship includes 2 individual tickets to the event and a standalone slide that would display your company’s logo and any other information you would like to include. The slide would be displayed throughout the evening.

Tier 2: $250 Sponsorship

Sponsorship includes 1 individual ticket to the event and your company’s logo would be displayed on a shared slide in a larger format. The slide would be displayed throughout the evening.

Thank you to our current sponsors!

Tier 1 Sponsor:

Tier 2 Sponsor:

Register Today

Chapter Officers & Board Members

2026 Officers

  • President: Michel Hulst
  • Vice President: Lauren Handley, LRE Water
  • Treasurer: Ed Mears, HDR
  • Secretary: Andrea Wrenn, Matrix New World
  • Chapter Board Member at Large: Bridget Hoagland Stamatovski, Matrix New World
  • Chapter Board Member at Large: Bryon Baden, GES
  • Chapter Board Member at Large: Shannon Reif, SRP

2026 Corporate Board Members

  • Board Member: Chris Brooks, CAP
  • Board Member: Nathan Miller, Matrix New World
  • Board Member: Enrique Vivoni, Director for Center for Hydrologic Innovations

You can contact board members via email at [email protected].

Chapter News