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

October 21, 2022
by John S. Weisheit

PART TWO

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

To View Part One of this featured article, CLICK HERE.

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

REPEAT PHOTOS (jpg images)

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

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

Photography, Photo Matches and Presentations
Dirty Devil River

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

Reconnaissance

Presentations

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

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2017 and 2018: Filmmaker Taylor Graham for National Geographic

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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.

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October of 2021 and Celebrating the 100th anniversary of the William R. Chenoweth Expedition of USGS.
• Description of the 1921 USGS Survey. William Chenoweth.


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

Other Locations and photographers

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

To View Part One of this featured article, CLICK HERE.

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