Unified Interior Regions

Region 7: Upper Colorado Basin

Map of Region 7: Upper Colorado Basin

Map of Region 7:  Upper Colorado Basin

Map Showing USGS/DOI Unified Region 7 and parts of adjoining Regions

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USGS Science Centers in Region 7-Upper Colorado Basin produce hundreds of USGS-series publications, journal papers, and books each year that are subject to rigorous review by USGS specialists. The publications shown below on this page are related to study areas and staff members of USGS Science Centers in Region 7 compiled from the USGS Publications Warehouse.

Filter Total Items: 5,264
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Year Published: 2020

Thresholds for post-wildfire debris flows: Insights from the Pinal Fire, Arizona, USA

Wildfire significantly alters the hydrologic properties of a burned area, leading to increases in overland flow, erosion, and the potential for runoff-generated debris flows. The initiation of debris flows in recently burned areas is well-characterized by rainfall intensity-duration (ID) thresholds. However, there is currently a paucity of data...

Raymond, Carissa A; McGuire, Luke A.; Youberg, Ann M.; Staley, Dennis M.; Kean, Jason W.

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Year Published: 2020

Environmental tracer evidence for connection between shallow and bedrock aquifers and high intrinsic susceptibility to contamination of the conterminous U.S. glacial aquifer

Covering a large portion of the northern conterminous United States (1.87 x 106 km2), the glacial aquifer serves as the primary water supply for 39 million public and domestic water users. Mean groundwater age, groundwater age distribution, and susceptibility to land surface contamination, using a new metric (Susceptibility Index; SI) based on the...

Solder, John E.; Jurgens, Bryant; Stackelberg, Paul; Shope, Christopher L.

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Year Published: 2020

Fault fictions: Systematic biases in the conceptualization of fault-zone architecture

Mental models are a human's internal representation of the real world and have an important role in the way we understand and reason about uncertainties, explore potential options and make decisions. Mental models have not yet received much attention in geosciences, yet systematic biases can affect any geological investigation: from how the...

Shipton, Zoe K; Roberts, Jennifer J; Comrie Emma L; Kremer, Yannick; Lunn, Rebecca J; Caine, Jonathan

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Year Published: 2020

USGS near-real-time products-and their use-for the 2018 Anchorage earthquake

In the minutes to hours after a major earthquake, such as the recent 2018 Mw">Mw 7.1 Anchorage event, the U.S. Geological Survey (USGS) produces a suite of interconnected earthquake products that provides diverse information ranging from basic earthquake source parameters to loss estimates. The 2018 Anchorage earthquake is the first...

Thompson, Eric M.; McBride, Sara; Hayes, Gavin P.; Allstadt, Kate; Wald, Lisa; Wald, David J.; Knudsen, Keith L.; Worden, Charles; Marano, Kristin; Jibson, Randall W.; Grant, Alex R. R.

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Year Published: 2020

Evaluation of ground‐motion models for U.S. Geological Survey seismic hazard models: 2018 Anchorage, Alaska, Mw 7.1 subduction zone earthquake sequence

Instrumental ground‐motion recordings from the 2018 Anchorage, Alaska (⁠Mw">Mw 7.1), earthquake sequence provide an independent data set allowing us to evaluate the predictive power of ground‐motion models (GMMs) for intraslab earthquakes associated with the Alaska subduction zone. In this study, we evaluate 15 candidate GMMs using...

McNamara, Daniel E.; Wolin, Emily; Powers, Peter M.; Shumway, Allison; Moschetti, Morgan P.; Rekoske, John; Thompson, Eric M.; Mueller, Charles; Petersen, Mark D.

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Year Published: 2020

Toward ecosystem accounts for Rwanda: Tracking 25 years of change in potential supply and flows of ecosystem services

1. Rwanda, a small but rapidly developing central African nation, has undertaken development of natural capital accounts to better inform its economic development through the World Bank’s Wealth Accounting and Valuation of Ecosystem Services (WAVES) Partnership. In this paper, we develop ecosystem service (ES) models to quantify the physical...

Bagstad, Kenneth J.; Ingram, Jane Carter; Lange, Glenn-Marie; Masozera, Michel K.; Ancona, Zachary H.; Bana, Mediatrice; Kabogo, Desire; Musana, Bernard; Nabahungu, Nsharwasi Leon; Rukundo, Emmanuel; Rutebuka, Evariste; Polasky, Stephen; Rugege, Denis; Uwera, Claudine

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Year Published: 2020

Anatomy of a caldera collapse: Kīlauea 2018 summit seismicity sequence in high resolution

The 2018 Kīlauea eruption and caldera collapse generated intense cycles of seismicity tied to repeated large seismic (Mw ~5) collapse events associated with magma withdrawal from beneath the summit. To gain insight into the underlying dynamics and aid eruption response, we applied waveform-based earthquake detection and double-difference location...

Shelly, David R.; Thelen, Weston

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Year Published: 2020

Controls on debris‐flow initiation on burned and unburned hillslopes during an exceptional rainstorm in southern New Mexico, USA

AbstractUsing observations from 688 debris flows, we analyse the hydrologic and landscape characteristics that influenced debris‐flow initiation mechanisms and locations in a watershed that had been partially burned by the 2012 Whitewater‐Baldy Complex Fire in the Gila Mountains, southern New Mexico. Debris flows can initiate due to different...

Tillery, Anne C.; Rengers, Francis K.

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Year Published: 2020

Ground-motion amplification in Cook Inlet region, Alaska from intermediate-depth earthquakes, including the 2018 MW=7.1 Anchorage earthquake

We measure pseudospectral and peak ground motions from 44 intermediate‐depth Mw≥4.9">Mw≥4.9 earthquakes in the Cook Inlet region of southern Alaska, including those from the 2018 Mw">Mw 7.1 earthquake near Anchorage, to identify regional amplification features (⁠0.1–5  s">0.1...

Moschetti, Morgan P.; Thompson, Eric M.; Rekoske, John; Hearne, Mike; Powers, Peter M.; McNamara, Daniel E.; Tape, Carl

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Year Published: 2020

Relaxing segmentation on the Wasatch Fault Zone: Impact on seismic hazard

The multisegment Wasatch fault zone is a well-studied normal fault in the western United States that has paleoseismic evidence of recurrent Holocene surface-faulting earthquakes. Along the 270-km-long central part of the fault, four primary structural complexities provide possible along-strike limits to these ruptures and form the basis for models...

Valentini, Alessandro; Duross, Christopher; Field, Edward H.; Gold, Ryan D.; Briggs, Richard W.; Visini, Francesco; Pace, Bruno

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Year Published: 2020

Holocene rupture history of the central Teton fault at Leigh Lake; Grand Teton National Park, Wyoming

Prominent scarps on Pinedale glacial surfaces along the eastern base of the Teton Range confirm latest Pleistocene to Holocene surface‐faulting earthquakes on the Teton fault, but the timing of these events is only broadly constrained by a single previous paleoseismic study. We excavated two trenches at the Leigh Lake site near the center of the...

Zellman, Mark; Duross, Christopher; Thackray, Glenn R.; Personius, Stephen; Reitman, Nadine G.; Mahan, Shannon A.; Brossy, Cooper

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Year Published: 2020

Classification of oil spill by thicknesses using multiple remote sensors

Satellite Synthetic Aperture Radar (SAR) is an operational tool for monitoring and assessment of oil spills. Satellite SAR has primarily been used to detect the presence/absence of oil, yet its ability to discriminate oil emulsions within a detected oil slick has not been fully exploited. Additionally, one of the challenges in the past has been...

Garcia-Pineda, Oscar; Staples, Gordon; Jones, Cathleen E; Hu, Chuanmin; Holt, Benjamin; Kourafalou, Villy; Graettinger, George; DiPinto, Lisa; Ramirez, Ellen; Street, David; Cho, Jay; Swayze, Gregg A.; Sun, Shaojie; Garcia, Diana; Haces-Garcia, Francisco

Photos and videos described and linked on this webpage come from a wide variety of USGS science activities and presentations performed by USGS Science Center staff members in the Region 7-Upper Colorado Basin.

Filter Total Items: 524
Workers collect snow sample at Apgar Lookout sampling site, Montana.
March 18, 2009

Workers collect snow sample at Apgar Lookout sampling site, Montana.

Workers collect snow sample at Apgar Lookout sampling site, Montana.

Worker prepares snowpack-sampling pit at Brumley, Colorado
March 17, 2009

Worker prepares snowpack-sampling pit at Brumley, Colorado

Worker prepares snowpack-sampling pit at Brumley, Colorado.

Precipitation collectors near snowpack-sampling site at Elk River, Colorado
March 13, 2009

Precipitation collectors near snowpack-sampling site at Elk River, CO

Precipitation collectors near snowpack-sampling site at Elk River, Colorado

National Atmospheric Deposition site near Gypsum Creek, Wyoming.
March 11, 2009

National Atmospheric Deposition site near Gypsum Creek, Wyoming.

National Atmospheric Deposition site near Gypsum Creek, Wyoming.

Snowpack-sampling site on Lone Mountain at Big Sky ski resort, Montana
March 4, 2009

Snowpack-sampling site on Lone Mountain at Big Sky ski resort, Montana

Snowpack-sampling site on Lone Mountain at Big Sky ski resort, Montana

Buffalo on road to Canyon, Wyoming
February 18, 2009

Buffalo on road to Canyon, Wyoming

Buffalo on road to Canyon, Wyoming

Chalk Cliffs in the background showing view from video camera towards station 1.
December 31, 2008

Chalk Cliffs view of Station 1

View of the west channel and Upper monitoring station (Station 1), Chalk Cliffs, CO.

Picture of a mountain range  with hay field and forest in foreground
September 23, 2008

Mountain range with hay field and forest in foreground in Colorado

Mountain range in the background, forest and hay field in the foreground.  The picture was taken in Colorado during a field trip for the Land Cover Trends project.

Andrews Creek Weather Station, Loch Vale, RMNP, CO
September 15, 2008

Andrews Meadow Weather Station

Andrews Creek Weather Station, Loch Vale, Rocky Mountain National Park, Colorado

Andrews Meadow (401723105400101)

40o17'25" 105o39'57"

...
Measuring streamflow in Fish Creek with large Cladophora growth
August 21, 2008

Measuring streamflow in Fish Creek with large Cladophora growth

Measuring streamflow in Fish Creek with large Cladophora growth

The Needles District, Canyonlands National Park
June 30, 2008

The Needles District, Canyonlands National Park

The Needles District, Canyonlands National Park. 

The Needles District, Canyonlands National Park
June 30, 2008

The Needles District, Canyonlands National Park

The Needles District, Canyonlands National Park

This page includes links to Social Media accounts (top of page), Science Centers (middle of page), and Regional Office staff members (bottom of page) of the USGS Region 7--Upper Colorado Basin.