Glen Canyon Dam Adaptive Management Program 

Annual Reporting Meeting 2020

Hilton Garden Inn 

7290 S Price Road, Tempe, AZ 85283

WebEx: https://usbor.webex.com/usbor/j.php?MTID=m1305fe1a7c787179fb8dff6b223f3f17

Phone: 877-932-7704 Passcode: 8410783

TIME Monday, January 13, 2020

9:00 – 9:10

(:10)

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

• Introductions: Michael Moran, Deputy Chief, USGS, GCMRC

Sediment Resources

9:10 – 9:35

(:25) 

Project A. Streamflow, Water Quality, Sediment Transport, and Sand Budgets in the CRe: Is sand 

management in Grand Canyon sustainable? David Topping, USGS, GCMRC

9:40 – 10:00

(:20)

Geomorphic change and biogeomorphic feedbacks in the Little Colorado River: Implications for 

reduced sediment loads and habitat, David Dean, USGS, GCMRC

10:05 – 10:25

(:20) 

Effects of dam releases on in-channel sediment storage and sandbar dynamics, Paul Grams, USGS, 

GCMRC

10:30 – 10:50

(:20) Changes in sandbars and campsites during the HFE Protocol, Joe Hazel and Matt Kaplinski, NAU

10:50 – 11:05

(:15) 

Stakeholder Discussion ─ Management implications of sediment, sand bars, and geomorphology 

monitoring and research: moderator Paul Grams, USGS, GCMRC

Tribal Resources

11:05 – 11:25

(:20) Hopi monitoring update, Jakob Maase, Hopi Tribe

11:30 – 11:50

(:20)

Navajo Nation tribal preferences for and values of resources downstream of Glen Canyon Dam, 

Lucas Bair, USGS, GCMRC

11:50 – 12:00

(:10) 

Stakeholder Discussion ─ Management implications of tribal resources monitoring and research:

moderator Jakob Maase, Hopi Tribe

12:00 – 1:00

(1:00) LUNCH

Hydropower and Energy Resources

1:00 – 1:20

(:20) Glen Canyon hydropower production and value: status & trends, Clayton Palmer, WAPA

1:25 – 1:45

(:20) 

Identifying the total economic value of hydropower at Glen Canyon Dam and implications for 

adaptive management, Lucas Bair, USGS, GCMRC

1:45 – 2:00

(:15) 

Stakeholder Discussion ─ Management implications of hydropower and energy monitoring and 

research: moderator Clayton Palmer, WAPA

Natural Processes/Aquatic Food Base

2:00 – 2:20

(:20) 

Lake Powell as a regulator of downstream water quality and ecosystem productivity, 

Bridget Deemer, USGS, GCMRC

2:25 – 2:45

(:20) 

Potential implications of a warmer future for the Colorado River ecosystem, Kim Dibble, USGS, 

GCMRC

2:50 – 3:00

(:10) BREAK

3:00 – 3:30

(:30) 

Colorado River ecosystem response to the Bug Flow Experiment, Ted Kennedy and Jeff Muehlbauer, 

USGS, GCMRC

3:35 – 4:15

(:40) Energetic constraints on fish populations, Charles Yackulic, USGS, GCMRC

4:15 – 4:30

(:15) 

Stakeholder Discussion ─ Management implications of natural processes and aquatic food base

monitoring and research: moderator Kim Dibble, USGS, GCMRC

4:30 Adjourn

5:00 – 7:00 POSTER SESSION (list of posters attached)
Poster Session - Hilton Garden Inn, 7290 S Price Road, Tempe, AZ, Monday, January 13, 2020, 5-7 PM

Poster Title Author

Sediment Resources

Geomorphic change on the lower Little Colorado River Joel Unema, USGS

Estimates of sand thickness and total sand storage for west-central Grand Canyon Dan Buscombe, NAU 

Tracing the origin of sandbar deposits in the Grand Canyon of the Colorado River 

using XRF signatures and Bayesian mixing models Katie Chapman, NAU 

Riparian Vegetation/Archaeological Resources

5-year status and trends report on vegetation conditions in the Colorado River 

corridor of the Grand Canyon

Brad Butterfield, NAU Emily 

Palmquist, USGS, GCMRC

Genetic structure and gene flow in Grand Canyon riparian plants: Implications for 

Vegetation Management

Emily Palmquist, USGS, 

GCMRC

Documenting Colorado River Ecosystem changes with repeat photography Helen Fairley, USGS,

GCMRC

Tribal Resources

Story map of Hualapai connections to the Colorado River/Grand Canyon Peter Bungart, Hualapai Tribe 

Nonnative Invasive Species

Can Colorado River native fish utilize New Zealand mudsnail as a food source?

Hailey Nelson, Basis High 

School, David Ward, Laura 

Tennant, Clay Nelson, USGS, 

GCMRC

Aquatic Food Base

Hydropower limits on aquatic invertebrates in the Grand Canyon affect fish biomass 

Jan Boyer, David Rogowski, 

AZGFD, Theodore Kennedy, 

Jeff Muehlbauer, USGS, 

GCMRC

Humpback Chub/Other Native Fish

Tools for discriminating between two sucker species and their hybrids Pilar Wolters, AZGFD

Modeling abundance and distribution of juvenile Humpback Chub in Colorado 

River backwaters

Laura Tenant, USGS, 

GCMRC

Data Stewardship

Glen Canyon Dam Adaptive Management Program Wiki: A one-stop shop for 

information Craig Ellsworth, WAPA
Glen Canyon Dam Adaptive Management Program 

Annual Reporting Meeting 2020

Hilton Garden Inn

7290 S Price Road, Tempe, AZ 85283

WebEx: https://usbor.webex.com/usbor/j.php?MTID=m5f1f807e2516595b9df33f3dfb76908f

Phone: 877-932-7704 Passcode: 8410783

TIME Tuesday, January 14, 2020

8:30 – 8:40

(:10)

Welcome and Administrative: Seth Shanahan, TWG Chair

• Introductions: Scott VanderKooi, Chief, USGS, GMCRC

Riparian Vegetation/Archaeological Resources

8:40 – 9:00

(:20) 

Species-level evaluation of riparian vegetation dynamics using remotely sensed imagery from aerial 

overflights, Joel Sankey, USGS, GCMRC

9:05 – 9:25

(:20) Vegetation feedbacks on sandbar deposition and erosion, Brad Butterfield, NAU

9:30 – 9:45

(:15) Experimental riparian vegetation removals, Lonnie Pilkington, NPS, GRCA 

9:50 – 10:10

(:20) 

Geomorphic Effects of Dam Operations and Vegetation Management for Archaeological Sites,

Joel Sankey, USGS, GCMRC

10:10 – 10:20

(:10) 

Stakeholder Discussion ─ Management implications of riparian vegetation and archeological 

resources and monitoring and research: moderator Joel Sankey, USGS, GCMRC

10:20 – 10:30

(:10) BREAK

Rainbow Trout Fishery

10:30 – 10:50

(:20) Lees Ferry trout monitoring, Dave Rogowski, AZGFD 

10:55 – 11:15

(:20) Glen Canyon trout populations, Mike Yard, USGS GCMRC

11:20 – 11:40

(:20) 

What determines the abundance of rainbow trout near the Little Colorado River confluence?

Josh Korman, Ecometric

11:40 – 12:00

(:20) 

Stakeholder Discussion ─ Management implications of rainbow trout fishery monitoring and 

research: moderator Dave Rogowski, AZGFD

12:00 – 1:00

(1:00) LUNCH

Other Native Fish/Nonnative Invasive Species

1:00 – 1:25

(:25) Grand Canyon systemwide fish monitoring, Jan Boyer, AZGFD

1:30 – 2:00

(:30) Effects of warmwater invasive species, David Ward, USGS, GCMRC

2:00 – 2:20

(:20) 

Stakeholder Discussion ─ Management implications of other native and invasive fish species 

monitoring and research: moderator David Ward, USGS, GCMRC

Humpback Chub

2:20 – 3:20

(:60) 

Little Colorado River and mainstem humpback chub population dynamics, Randy Van Haverbeke, 

USFWS and Maria Dzul, USGS, GCMRC

3:25 – 3:40

(:15) BREAK

3:40 – 4:00

(:20) Bright Angel Creek native fish restoration, Brian Healy, NPS

4:05 – 4:25

(:20) NPS humpback chub translocations, Emily Omana Smith, NPS

4:25 – 4:40

(:15) 

Stakeholder Discussion ─ Management implications of humpback chub monitoring and research: 

moderator Emily Omana Smith, NPS

4:40 Adjourn