Arizona Hydrological Society upcoming events

Flagstaff Chapter Presentation (7 Aug 2026)

Sat, 08 Aug 2026 01:00:00 GMT

Join us for a presentation by

Hannah Chambless, M.S., Hydrologist with the Science & Resource Management Division in Grand Canyon National Park, on Grand Canyon North Rim Dye Trace Study. Talk starts promptly at 6:30

$5 for members and non-member students; $10 non-members

Appetizers included!

2026 AHS Annual Symposium (9 Sep 2026)

Wed, 09 Sep 2026 07:00:00 GMT

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.

AHS 2026 Symposium A La Carte (9 Sep 2026)

Wed, 09 Sep 2026 07:00:00 GMT

2026 Symposium: Sponsors & Exhibitors (9 Sep 2026)

Wed, 09 Sep 2026 15:00:00 GMT

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

2026 Symposium: Event & Other Sponsors (9 Sep 2026)

Wed, 09 Sep 2026 15:00:00 GMT

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.

2026 AHS Symposium Watershed Modeling Workshop (9 Sep 2026)

Wed, 09 Sep 2026 15:00:00 GMT

Distributed Watershed Modeling for Flood Simulation: Bringing Research Tools to Practice

Watershed modeling is a critical tool for engineers and scientists working in flood risk assessment, infrastructure design, and water resources planning. In Arizona, practitioners commonly rely on HEC-HMS for event-based hydrologic simulations following methodologies established by the Arizona Department of Transportation (ADOT) and the Flood Control District of Maricopa County (FCDMC). While effective, these semi-distributed approaches may not capture the full spatial variability of watershed processes that influence flood behavior.

This workshop introduces participants to a new generation of watershed modeling tools by comparing HEC-HMS with tRIBS (TIN-based Real-time Integrated Basin Simulator), a fully-distributed, open-source hydrologic model developed over 20+ years of research and now available on GitHub. Participants will work through a real-world case study in the South Mountain Fan (SMF) watershed in the Phoenix metropolitan area, applying the tRIBS model to the largest observed streamflow event on August 12, 2014, and two subsequent events within the same summer. Attendees will gain first-hand insight into the capabilities, limitations, and the value added to consulting and design projects by applying distributed hydrologic models.

A key feature of this workshop is the use of modern cyberinfrastructure. Participants will use GitHub Codespaces and Jupyter Notebooks to interact with tRIBS, eliminating the need for complex software installations and demonstrating how cloud-based tools are changing the landscape of hydrologic modeling. All workshop materials have been developed and tested in a university course at Arizona State University during the Spring 2026 semester.

Flagstaff Water Resources & Upper Lake Mary Paired Watersheds Trip (9 Sep 2026)

Wed, 09 Sep 2026 16:30:00 GMT

Join us Wednesday before the Annual Meeting and Ice Breaker Reception for a tour of the Upper Lake Mary Paired Watershed research projects presented by Dr. Abe Springer and City of Flagstaff Water Resources hosted by City of Flagstaff Water Resources' Erin Young. We meet at the High Country Conference Center at 9:30 AM, hop in a van field school style, and drive to Upper Lake Mary paired watersheds. After a provided lunch at a lakeside ramada, we will visit the City's water, wastewater, stormwater and recycled water systems. Bring water and sturdy footwear/outdoor clothing appropriate for the Flagstaff weather in September (perfect and temperate, but potentially rainy and windy).

*You MUST be a member to attend a field trip*

2026 AHS Symposium Groundwater Workshop (9 Sep 2026)

Wed, 09 Sep 2026 19:30:00 GMT

Introduction to Building and Running Groundwater Models

This course will give students knowledge necessary for setting up, executing and using groundwater models. The half-day workshop will focus on using the use of groundwater models to model groundwater flow and transport. The groundwater model MODFLOW will be used as the primary modeling tool, but other surface water and groundwater models will be discussed. Students will be guided through example models using accessible files. Discussion of calibration of groundwater models and other more advanced topics will be included.

Post-Symposium CAMPIN’ in the PINES - CHOOSE YOUR OWN ADVENTURE (11 Sep 2026)

Fri, 11 Sep 2026 23:00:00 GMT

Saddle up for the post-symposium shindig! Extend your stay in the beautiful Ponderosa Pines with a camp out at Dogtown Lake. BYO camping gear, campsites have been reserved in advance! Carpooling is HIGHLY encouraged. Opt in for a river kitchen-style dinner on Friday night. Saturday, choose your own adventure followed by dinner at Historic Brewery in Williams (dinner not included in field trip cost)! For the extreme adventurer, hop in a side by side with SRP to check out a flume in the woods. Or, get your steps in with Abe Springer and visit Big Spring (sturdy footwear, outdoor clothing, and plenty of water recommended). A third option is to explore the Williams area water resources with Erin Young. Post-daytime activities, meet up at Historic Brewing Company for dinner, then head back to camp for a jam out under the stars. Depart at your leisure Sunday morning.

Friday, arrive at Dogtown Lake in Williams, AZ after 4:00 and check in with the camp host. Set up camp. Optional dinner served at 18:30.

Saturday 8:00 AM: choose your adventure (breakfast & packed lunch provided):

Option 1: Side x Side to the FLUME:

This will require a sense of adventure!
Wear sturdy shoes & adequate attire for off-roading (pants, long sleeves).
Short hike (<0.5 Mile)
Bring plenty of water

Option 2: Hike to BIG SPRING with Abe

Car pool to trailhead
Bring plenty of water
Wear sturdy shoes/outdoor attire
Involves creek crossings (water shoes or sandals recommended
1.5 miles round trip with approximately 60 feet of elevation down a rocky trail

Option 3: Explore Williams water resources and BASALT COLUMNS in Sycamore Canyon

Car pool to well sites and hydrological/geologic locations of interest

Saturday night

Dinner in town at Historic Brewing Company
Return to camp for another night of camping under the stars
Bring an instrument or your dancing shoes!
Depart Sunday A.M. at your leisure.

*Must be a member to attend the field trip*