Updated: 4/1/22

GLEN CANYON DAM ADAPTIVE MANAGEMENT PROGRAM

TECHNICAL WORK GROUP MEETING

APRIL 12-13, 2022 

DAY 1 WEBINAR

https://rec.webex.com/rec/j.php?MTID=m0b564076eb8d6b453d16d622a6a83b71

Call in (415) 527-5035 | Participant Passcode: 2762 462 5483

Meeting Number: 2762 462 5483 | Meeting Password: Apr12

FINAL AGENDA

STARTS AT 8:30 a.m. Pacific Daylight Time (PDT)/ 8:30 a.m. Arizona Time / 9:30 am Mountain Daylight Time (MDT)

START

TIME

(Duration)

Tuesday, April 12, 2022 (Day 1)

Topic, Presenter, and Purpose

9:30

MDT

(:45) 

Welcome and Administrative: Michelle Garrison, Technical Work Group (TWG) Vice-Chair 

 Introductions and Determination of Quorum (16 members)

 Adoption of Prior Meeting Minutes 

 Next Meeting Date(s): June 15-16, 2022 

 Ad Hoc Group Membership and Updates 

 Review Action Items, Motions, and Votes Form 

 Update on Program Funding

 Possible Experimental and Management Actions in the Next 12 Months

 Update on Activities Impacted Due to COVID-19 Restrictions 

 Stakeholder River Trip July 13-22, 2022

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

10:15

MDT

(:60) 

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

Powell and Below Glen Canyon Dam: Heather Patno, Robert Radtke, and Clarence Fullard Bureau 

of Reclamation (Reclamation) 

 Presentation (45 minutes)

 Q&A and discussion (15 minutes)

11:15

MDT

(:15) 

BREAK

11:30

MDT

(:45) 

Smallmouth Bass – Lessons Learned from the Upper Basin and Status of Control Efforts: Kevin 

Bestgen, Colorado State University

 Presentation (30minutes)

 Q&A and discussion (15 minutes)

12:15 

MDT

(:45)

An Update About Non-Native Fish Studies in Lake Powell: Phaedra Budy et al., Utah State 

University; and Mike Horn and Connie Svoboda, Reclamation

 Presentation (30 minutes)

 Q&A and discussion (15 minutes)
Updated: 4/1/22

START

TIME

(Duration)

Tuesday, April 12, 2022 (Day 1)

Topic, Presenter, and Purpose

1:00

MDT

(:60) 

LUNCH

2:00 

MDT

(:60)

Discussion About the Near-Term Threat of Smallmouth Bass Establishment below Glen Canyon 

Dam and the Team Organized to Better Understand the Threat and Explore Mitigation 

Opportunities; and a Discussion About the Non-Native Aquatic Species Control Actions Available 

to the National Park Service: Kirk Young, US Fish and Wildlife Service; Rob Billerbeck, National 

Park Service; Charles Yackulic, Grand Canyon Monitoring and Research Center (GCMRC); et al.

 Presentation (30 minutes)

 Q&A and discussion (30 minutes)

3:00

MDT

(:15) 

BREAK

3:15

MDT

(1:45) 

Tabletop Exercise to Explore Information and Management Gaps, Part 1 of 3: TWG Members

 Discussion (1 hour 45 minutes)

Purpose: To provide an opportunity for the TWG to discuss, in a non-threatening environment, 

simulated emergency situations regarding near-term, high-priority issues of concern such as the 

establishment of non-native fish, high water temperatures, and low dissolved oxygen. Tabletop 

exercises are typically used to clarify roles and responsibilities and to explore additional 

information and management preparedness needs. This discussion will be facilitated through the 

Science Advisors Program. 

5:00

MDT

(:05) 

Public Comment

5:05

MDT

ADJOURN 
Updated: 4/1/22

GLEN CANYON DAM ADAPTIVE MANAGEMENT PROGRAM

TECHNICAL WORK GROUP MEETING

APRIL 12-13, 2022 

DAY 2 WEBINAR

https://rec.webex.com/rec/j.php?MTID=m3ef316eb74b0ae3283406b19dbcc8acf

Call in (415) 527-5035 | Participant Passcode: 2763 106 1351

Meeting Number: 2763 106 1351 | Meeting Password: Apr13

FINAL AGENDA

STARTS AT 8:30 a.m. Pacific Daylight Time (PDT)/ 8:30 a.m. Arizona Time / 9:30 am Mountain Daylight Time (MDT)

START

TIME

(Duration)

Wednesday, April 13, 2022 (Day 2)

Topic, Presenter, and Purpose

9:30

MDT

(:30) 

Welcome and Administrative: Michelle Garrison, TWG Vice-Chair 

 Introductions and Determination of Quorum (16 members)

 Unresolved Issues from Yesterday’s Meeting 

10:00

MDT

(:60)

Tabletop Exercise to Explore Information and Management Gaps, Part 2 of 3: TWG Members

 Discussion (60 minutes)

11:00

MDT

(:15)

BREAK

11:15

MDT

(:60)

Tabletop Exercise to Explore Information and Management Gaps, Part 3 of 3: TWG Members

 Presentation (30 minutes)

 Q&A and discussion (15 minutes) 

12:15

MDT

(:30) 

Informational Updates

 Long-Term Experimental and Management Plan Biological Opinion Conservation Measures: 

Kerri Pedersen, Reclamation

 Rainbow and Brown Trout Status in Lees Ferry: Ryan Mann, Arizona Game and Fish Department 

(AZGFD) 

 Rainbow Trout Management Actions in Lees Ferry: Ryan Mann, AZGFD

 Aquatic Vegetation Removal Project Status in Lees Ferry: Charles Yackulic, GCMRC

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

Healy, National Park Service

12:45

MDT

(:60)

LUNCH
Updated: 4/1/22

START

TIME

(Duration)

Wednesday, April 13, 2022 (Day 2)

Topic, Presenter, and Purpose

1:45

MDT

(:60)

Bug Flows Discussion: Ted Kennedy, Grand Canyon Monitoring and Research Center (GCMRC); and 

Lee Traynham, Bureau of Reclamation (Reclamation) 

 Presentation (30 minutes)

 Q&A and discussion (30 minutes)

2:45 

MDT

(:45)

Budget Ad Hoc Group – Initial Findings and Status Report: Craig Ellsworth, Western Area Power 

Administration (WAPA)

 Presentation (30 minutes)

 Q&A and discussion (15 minutes)

3:30

MDT

(:15)

BREAK

3:45

MDT

(:15)

Discussion About Addressing the Adaptive Management Work Group’s Motion Directing the 

TWG to Pursue Water Quality Studies: TWG Members

 Q&A and discussion (15 minutes) 

AMWG motion approved on February 10, 2022: The Adaptive Management Work Group (AMWG) 

directs the Technical Work Group (TWG), with support from the Grand Canyon Monitoring and 

Research Center and Reclamation, to identify the scope of work, potential funding sources and 

priorities, schedule, and staffing needed to evaluate water quality released from Glen Canyon Dam 

and potential effects on resources in the Colorado River ecosystem (CRE) on a short-term and 

longterm basis. To address short-term needs, the TWG and GCMRC will prepare an assessment 

report that focuses on water quality parameters and impacts, including potential thresholds, on 

affected resources throughout the CRE, subject to available funding. (Estimated cost: $250,000). In 

the long-term, this evaluation will inform any future AMWG recommendations to the Secretary of 

the Interior regarding infrastructure modifications.

4:00

MDT

(:30)

Monitoring Metrics: Helen Fairley, GCMRC

 Presentation (15 minutes)

 Q&A and discussion (15 minutes) 

4:30

MDT

(:45)

Discussion of Emerging or Other 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 (45 minutes)

5:15

MDT

(:05) 

Public Comment

5:20

MDT

ADJOURN