Updated: 4/10/23

GLEN CANYON DAM ADAPTIVE MANAGEMENT PROGRAM

TECHNICAL WORK GROUP MEETING

APRIL 12-13, 2023

Arizona Department of Water Resources 

1110 W. Washington Street, Suite 310, Phoenix, AZ 85007 

DAY 1 WEBINAR

https://rec.webex.com/rec/j.php?MTID=m94fb241ac9ab3eb3257036cfa0141ea3

Call in: (877) 932-7704 | Participant Passcode: 8410783

Meeting Number: 2762 373 0059 | Meeting Password: TWG12 (89412 from video systems)

FINAL AGENDA

STARTS AT 9:45 a.m. Pacific Daylight Time (PDT)/ 9:45 a.m. Arizona Time / 10:45 am Mountain Daylight Time (MDT)

START

TIME

(Duration)

Wednesday, April 12, 2023 (Day 1)

Topic, Presenter, and Purpose

9:45

PDT

(:45) 

Welcome and Administrative: Seth Shanahan, Technical Work Group (TWG) Chair 

 Introductions and Determination of Quorum (16 members)

 Adoption of Prior Meeting Minutes 

 Next Meeting Date(s): June 14-15, 2023 

 Ad Hoc Group Membership and Updates 

 Review Action Items, Motions, and Votes Form

 Update on Monitoring and Research Trips to Occur From Today Until Next Meeting

10:30

PDT

(:60) 

Update on Hydrology, Glen Canyon Dam Operations, and Water Quality Conditions in Lake 

Powell and Below Glen Canyon Dam: Heather Patno and Robert Radtke, Bureau of Reclamation

(Reclamation)

 Presentation (30 minutes)

 Q&A and discussion (30 minutes)

11:30

PDT

(:30) 

Status Report for Resolving Potential Adverse Effects According to Section 106 of the National 

Historic Preservation Act: Zachary Nelson, Reclamation 

 Presentation (15 minutes)

 Q&A and discussion (15 minutes)

12:00

PDT

(1:30) 

LUNCH

1:30

PDT

(:60)

Status Report for Developing a Plan to Amend the High-Flow Experiment Protocol: FLAHG Chair, 

TWG Members

 Presentation (15 minutes)

 Q&A and discussion (45 minutes)

2:30

PDT

(:15) 

BREAK
Updated: 4/10/23

START

TIME

(Duration)

Wednesday, April 12, 2023 (Day 1)

Topic, Presenter, and Purpose

2:45

PDT

(:30)

Monitoring Metrics: Helen Fairley, GCMRC

 Presentation (15 minutes)

 Q&A and discussion (15 minutes) 

3:15

PDT

(:30) 

Informational Updates

 Green Sunfish Status and Incentivized Harvest Program Implementation: Jeff Arnold, NPS

 Paria Beach Restoration: Grand Canyon Wildlands Council

 Lees Ferry Herpetology Study: Jakob Maase, Hopi Tribe

 Possible Experimental and Management Actions in the Next 12 Months: Reclamation

3:45

PDT

(:30)

2007 Interim Guidelines Draft Supplemental Environmental Impact Statement: Reclamation

 Presentation (15 minutes)

 Q&A and discussion (15 minutes)

4:15

PDT

(:15)

Bugs Pay for Days of Steady Reservoir Releases to Reduce Costs to Hydropower Customers and 

Sustain Funds to Maintain Infrastructure: David Rosenberg, Utah State University (USU)

 Presentation (10 minutes)

 Q&A and discussion (5 minutes)

4:30

PDT

(:05) 

Public Comment

4:35

PDT

ADJOURN 
Updated: 4/10/23

GLEN CANYON DAM ADAPTIVE MANAGEMENT PROGRAM

TECHNICAL WORK GROUP MEETING

APRIL 12-13, 2023

Arizona Department of Water Resources 

1110 W. Washington Street, Suite 310, Phoenix, AZ 85007 

DAY 2 WEBINAR

https://rec.webex.com/rec/j.php?MTID=m0cf46f9ca885749a72046efeb2b8693e

Call in: (877) 932-7704 | Participant Passcode: 8410783

Meeting Number: 2762 475 6370 | Meeting Password: TWG13 (89413 from video systems)

DRAFT AGENDA

STARTS AT 9:00 a.m. Pacific Daylight Time (PDT)/ 9:00 a.m. Arizona Time / 10:00 am Mountain Daylight Time (MDT)

START

TIME

(Duration)

Thursday, April 13, 2023 (Day 2)

Topic, Presenter, and Purpose

9:00

PDT

(:15) 

Welcome and Administrative: Seth Shanahan, TWG Chair 

 Introductions and Determination of Quorum (16 members)

 Unresolved Issues from Yesterday’s Meeting

9:15

PDT

(1:30)

Evaluation and Discussion of 2022 Nonnative Fish Detections and Response Activities: Arizona 

Game and Fish Department (AZGFD), Reclamation, Grand Canyon Monitoring and Research Center 

(GCMRC), National Park Service (NPS)

 Presentation (30 minutes)

 Q&A and discussion (60 minutes)

10:45

PDT

(:15)

BREAK

11:00

PDT

(1:30)

Discussion of 2023 Nonnative Fish Detections, Monitoring Activities, Potential Response Capacity 

Building Needs, and Other Nonnative Fish Planning Topics: Arizona Game and Fish Department 

(AZGFD), Bureau of Reclamation (Reclamation), Grand Canyon Monitoring and Research Center 

(GCMRC), National Park Service (NPS), Barret Friesen (Utah State University)

 Presentation (30 minutes)

 Q&A and discussion (60 minutes)

12:30

PDT

(1:30)

LUNCH

2:00

PDT

(:60)

Potential Glen Canyon Dam Operational Modifications to Address Smallmouth Bass 

Establishment: Bill Stewart, Reclamation

 Presentation (15 minutes)

 Q&A and discussion (45 minutes)
Updated: 4/10/23

START

TIME

(Duration)

Thursday, April 13, 2023 (Day 2)

Topic, Presenter, and Purpose

3:00

PDT

(:15)

BREAK

3:15

PDT

(:60)

Discussion of Budget and Work Plan Adjustments: Reclamation and GCMRC; TWG Members

 Presentation (15 minutes)

 Q&A and discussion (45 minutes) 

4:15

PDT

(:15)

Discussion of Emerging Issues, Updates on Items of Interest That Are in Consideration 

for Implementation Before Next TWG Meeting, and Request for Agenda Items for Next Meeting: 

TWG Members

 Discussion (15 minutes)

4:30

PDT

(:05) 

Public Comment

4:35

PDT

ADJOURN