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Part Three: Citizen and Professional Science in Glen Canyon National Recreation Area

October 21, 2022
by John S. Weisheit



PROJECT PROGRAMMING: Lake Powell Sedimentation

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1992 to 2004: Dr. Robert H. Webb (USGS, retired), Dr. Jayne Belnap (USGS, retired), and John Weisheit.
Repeat photography and data when reservoir was nearly full in the 1990s.

REPEAT PHOTOS (jpg images)


1994 to 2000 - San Juan River Sedimentation Project by Donald Baars and Gene Stevenson


1998 to 2000: Glen Canyon Institute; Citizen's Environmental Assessment on the decommissioning of Glen Canyon Dam.


2002 to 2006: Dr. John Dohrenwend (USGS, retired) & John Weisheit (Colorado Riverkeeper)
Original photos; repeat photography and presentations.

Photography, Photo Matches and Presentations
Dirty Devil River mouth; original Hite Marina; sand and gravel operations for highway and bridge construction.

Note: The trailer camp in the photos above ware occupied by the workers of Highway 95 and for road and bridge construction. You will notice that heavy equipment is gathering and sorting Colorado and Dirty Devil river gravels (Quaternary Period) for road base and for the bridge approaches. A marina was also available for boaters and operated by commercial outfitters, namely John Frank Wright (Mexican Hat Expeditions) and Gaylord Stavely (Canyoneers).

Additional Information about Glen Canyon Photography by Tad Nichols




Utah State University: 2005 to 2022


2017 - Rebecca Solnit


2017 to present: The Returning Rapids Project; Mike DeHoff (Principal Investigator) and colleagues


2017 and 2018: Filmmaker Taylor Graham for National Geographic


2021 to present: Glen Canyon Rejuvenation Project; Dr. Dan McCool and colleagues

Aerial Photos: Light Hawk Overflight of September 10, 2021, PDF Portfolios.

Reservoir boating trip; photos and report: 6-day camping trip to Bullfrog Marina, Moki Canyon, Forgotten Canyon, and Lake Canyon.


October 2021 - 100th Anniversary of the Kelly W. Trimble 1921 USGS San Juan Expedition


October of 2021 - 100th anniversary of the William R. Chenoweth 1921 USGS Canyonlands Expedition.

October 2021 - Dirty Devil Boat Ramp to Bullfrog Creek Boat Ramp
By Tom Martin (River Runners for Wilderness) and John Weisheit (Living Rivers & Colorado Riverkeeper).

  • Trip dates: September and October of 2021
  • By staff and volunteers for the fiscally sponsored projects of Living Rivers: River Runners for Wilderness and Colorado Riverkeeper.
  • CLICK HERE to view this repeat photograpjy presentation via VIMEO. Tom Martin.
Note: Stay tuned for more repeat photgraphy

A repeat photography boat trip; October 10 to 14, 2021; reservoir elevation 3545 feet.
Note: PDF Portfolios of general reservoir conditions; file size reduced; still takes awhile to download.
The Repeat Photos
Original images before 1964 and the match occurred in 2021 at elevation 3545 feet
Note: Matches to be perfected with new additions in October of 2022
October of 2022: Aerial Photos at Elevation 3530 feet
All photos by John Weisheit and public domain.

October of 2022 Matches

Matching photos from the Nielsen Collection near Farley, White and Trachyte canyons. Also 1921 USGS photos between The Horn and Bullfrog Creek.

Other Locations and photographers


2023 - Erik Bernhoft and Tom Martin match lower half of Lake Powell


Stay tuned for a more detailed narratives that will include landscape and aerial photos.

End of Part Three


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Dam Operations
Public Notices


Back of Beyond Books
Barbara Anne Morra Memorial
Canyon Country Rising Tide
Canyonlands Watershed Council
Celebrating the Grand Canyon
Center for Biological Diversity
Colorado River Connected
Colorado Riverkeeper
Corey Allen Hale Memorial
Dive Into Democracy
Five Quail Books
Frank West Bering, Jr. Memorial
Friends of the Earth
Going Solar
Great Basin Water Network
Green River Action Network
Holiday River Expeditions
Las Vegas Water Defender
Living Rivers
New Belgium Brewing Company
O.A.R.S White Water Rafting
Paul Henderson Memorial
Peaceful Uprising
People's Energy Movement
Resource Renewal Institute
Returning Rapids Project
Rig To Flip
River Runners for Wilderness
Save The Colorado
Serena Supplee Gallery
Sheep Mountain Alliance
Steaming Bean Coffee Company
Tom Till Photography
Upper Colorado River Watershed Group
Upper Green River Network
Uranium Watch
Utah Rivers Council
Utah Tar Sands Resistance
Wabi Sabi
Waterkeeper Alliance

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