Science and Products
Water Budget of the Sierra Vista Subwatershed of the Upper San Pedro Basin, 2002 - 2012 and 2020
Groundwater budgets were compiled from 2002 to 2012 and 2020 for the Sierra Vista Subwatershed for the Upper San Pedro Partnership. In 2012, the annual groundwater budget was estimated to be about -5,000 acre-ft per year (negative values indicate a deficit, where more water is removed from the system than is being returned; positive values indicate a surplus, where more water is entering the syste
Filter Total Items: 17
Hydrologic framework and characterization of the Little Colorado River alluvial aquifer near Leupp, Arizona
The Little Colorado River alluvial aquifer near Leupp, Arizona, was investigated as a possible source of irrigation water for the Leupp and Birdsprings Chapters of the Navajo Nation. The physical, chemical, and hydraulic characteristics of the alluvial aquifer were studied using geophysical surveys, installation of observation wells, water-level measurements, chemical analyses, groundwater pumping
Authors
Jon P. Mason, Jeffrey R. Kennedy, Jamie P. Macy, Bruce Gungle
Occurrence and transport of aerially applied herbicides to control invasive buffelgrass in Rincon Mountain District, Saguaro National Park, Arizona
Resource managers of the Saguaro National Park are concerned about the spread of the invasive species Cenchrus ciliaris L. (buffelgrass) and the threat it poses to desert ecosystems. Glyphosate-based herbicide treatments seem to be one of a few viable options to control the spread of buffelgrass in the mountainous terrain of the National Park. The U.S. Geological Survey completed a 4-year study wi
Authors
Nicholas V. Paretti, Bruce Gungle
Assessing potential groundwater-level declines from future withdrawals in the Hualapai Valley, northwestern Arizona
A numerical groundwater flow model of the Hualapai Valley Basin in northwestern Arizona was developed to assist water-resource managers in understanding the potential effects of projected groundwater withdrawals on groundwater levels in the basin. The Hualapai Valley Hydrologic Model (HVHM) simulates the hydrologic system for the years 1935 through 2219, including future withdrawal scenarios that
Authors
Jacob E. Knight, Bruce Gungle, Jeffrey R. Kennedy
Occurrence, fate, and transport of aerially applied herbicides to control invasive buffelgrass within Saguaro National Park Rincon Mountain District, Arizona, 2015–18
The spread of the invasive and fire-adapted buffelgrass (Cenchrus ciliaris L.) threatens desert ecosystems by competing for resources, increasing fuel loads, and creating wildfire connectivity. The Rincon Mountain District of Saguaro National Park addressed this natural resource threat with the use of glyphosate-based herbicides (GBHs). In 2010, the Rincon Mountain District initiated an aerial res
Authors
Nicholas V. Paretti, Kimberly R. Beisner, Bruce Gungle, Michael T. Meyer, Bethany K. Kunz, Edyth Hermosillo, Jay R. Cederberg, Justine P. Mayo
Hydrogeologic characterization of the Hualapai Plateau on the western Hualapai Indian Reservation, northwestern Arizona
This study was developed to assess if groundwater from the western Hualapai Plateau could be used to supply developments in the Grand Canyon West area of the Hualapai Indian Reservation and to collect hydrogeologic data for future use in a numerical groundwater model for the reservation. Ground-based geophysical surveys; existing well, spring, and other hydrogeologic information from previous stud
Authors
Jon P. Mason, Jamie P. Macy, Donald J. Bills, Bruce Gungle, Casey J.R. Jones
Reach-scale monitoring and modeling of rivers--Expanding hydraulic data collection beyond the cross section
For over 125 years, the U.S. Geological Survey streamgage network has provided important
hydrologic information about rivers and streams throughout the Nation. Traditional streamgage
methods provide reliable stage and streamflow data but typically only monitor stage at a single location in a river and require frequent calibration streamflow measurements. Direct measurements are not always feasible
Authors
Brandon T. Forbes, Claire E. Bunch, Geoffrey DeBenedetto, Corey J. Shaw, Bruce Gungle
Spatial and temporal distribution of bacterial indicators and microbial-source tracking within Tumacácori National Historical Park and the upper Santa Cruz River, southern Arizona and northern Mexico, 2015–2016
Tumacácori National Historical Park (TUMA) in southern Arizona protects the culturally important Mission San José de Tumacácori, while also managing a part of the ecologically diverse riparian corridor of the Santa Cruz River. The quality of the water flowing through depends solely on upstream watershed activities, and among the water-quality issues concerning TUMA is the microbiological pathogens
Authors
Nicholas V. Paretti, Christopher M. Kephart, Thomas J. Porter, Edyth Hermosillo, Jay R. Cederberg, Justine P. Mayo, Bruce Gungle, Alissa L. Coes, Rachel S. Tucci, Laura M. Norman
Characterization of Big Chino subbasin hydrogeology near Paulden, Arizona, using controlled source audio-frequency magnetotelluric surveys
The Big Chino subbasin is located in central-northwest Arizona in the transition zone between the Colorado Plateau and the Basin and Range Province. The controlled source audio-frequency magnetotelluric (CSAMT) geophysical method, a low-impact, non-intrusive, electrical resistance sounding technique, was used to evaluate the subsurface hydrogeology of the southern third of the Big Chino subbasin.
Authors
Jamie P. Macy, Bruce Gungle, Jon P. Mason
Assessment of environmental flows in the middle Verde River watershed, Arizona
This report summarizes analyses of middle Verde River watershed environmental flows detailed in U.S. Geological Survey Scientific Investigations Report 2017-5100, “Preliminary synthesis and assessment of environmental flows in the middle Verde River watershed, Arizona," by N.V. Paretti, A.M.D. Brasher, S.L. Pearlstein, D.M. Skow, B. Gungle, and B.D. Garner.
Authors
Bruce Gungle, Nicholas V. Paretti
Preliminary synthesis and assessment of environmental flows in the middle Verde River watershed, Arizona
A 3-year study was undertaken to evaluate the suitability of the available modeling tools for characterizing environmental flows in the middle Verde River watershed of central Arizona, describe riparian vegetation throughout the watershed, and estimate sediment mobilization in the river. Existing data on fish and macroinvertebrates were analyzed in relation to basin characteristics, flow regimes,
Authors
Nicholas V. Paretti, Anne M. D. Brasher, Susanna L. Pearlstein, Dena M. Skow, Bruce Gungle, Bradley D. Garner
Hydrological conditions and evaluation of sustainable groundwater use in the Sierra Vista Subwatershed, Upper San Pedro Basin, southeastern Arizona
This study assessed progress toward achieving sustainable groundwater use in the Sierra Vista Subwatershed of the Upper San Pedro Basin, Arizona, through evaluation of 14 indicators of sustainable use. Sustainable use of groundwater in the Sierra Vista Subwatershed requires, at a minimum, a stable rate of groundwater discharge to, and thus base flow in, the San Pedro River. Many of the 14 indicato
Authors
Bruce Gungle, James B. Callegary, Nicholas V. Paretti, Jeffrey R. Kennedy, Christopher J. Eastoe, Dale S. Turner, Jesse E. Dickinson, Lainie R. Levick, Zachary P. Sugg
Development of a shared vision for groundwater management to protect and sustain baseflows of the Upper San Pedro River, Arizona, USA
Groundwater pumping along portions of the binational San Pedro River has depleted aquifer storage that supports baseflow in the San Pedro River. A consortium of 23 agencies, business interests, and non-governmental organizations pooled their collective resources to develop the scientific understanding and technical tools required to optimize the management of this complex, interconnected groundwat
Authors
Holly E. Richter, Bruce Gungle, Laurel J. Lacher, Dale S. Turner, Brooke M. Bushman
Science and Products
- Data
Water Budget of the Sierra Vista Subwatershed of the Upper San Pedro Basin, 2002 - 2012 and 2020
Groundwater budgets were compiled from 2002 to 2012 and 2020 for the Sierra Vista Subwatershed for the Upper San Pedro Partnership. In 2012, the annual groundwater budget was estimated to be about -5,000 acre-ft per year (negative values indicate a deficit, where more water is removed from the system than is being returned; positive values indicate a surplus, where more water is entering the syste - Publications
Filter Total Items: 17
Hydrologic framework and characterization of the Little Colorado River alluvial aquifer near Leupp, Arizona
The Little Colorado River alluvial aquifer near Leupp, Arizona, was investigated as a possible source of irrigation water for the Leupp and Birdsprings Chapters of the Navajo Nation. The physical, chemical, and hydraulic characteristics of the alluvial aquifer were studied using geophysical surveys, installation of observation wells, water-level measurements, chemical analyses, groundwater pumpingAuthorsJon P. Mason, Jeffrey R. Kennedy, Jamie P. Macy, Bruce GungleOccurrence and transport of aerially applied herbicides to control invasive buffelgrass in Rincon Mountain District, Saguaro National Park, Arizona
Resource managers of the Saguaro National Park are concerned about the spread of the invasive species Cenchrus ciliaris L. (buffelgrass) and the threat it poses to desert ecosystems. Glyphosate-based herbicide treatments seem to be one of a few viable options to control the spread of buffelgrass in the mountainous terrain of the National Park. The U.S. Geological Survey completed a 4-year study wiAuthorsNicholas V. Paretti, Bruce GungleAssessing potential groundwater-level declines from future withdrawals in the Hualapai Valley, northwestern Arizona
A numerical groundwater flow model of the Hualapai Valley Basin in northwestern Arizona was developed to assist water-resource managers in understanding the potential effects of projected groundwater withdrawals on groundwater levels in the basin. The Hualapai Valley Hydrologic Model (HVHM) simulates the hydrologic system for the years 1935 through 2219, including future withdrawal scenarios thatAuthorsJacob E. Knight, Bruce Gungle, Jeffrey R. KennedyOccurrence, fate, and transport of aerially applied herbicides to control invasive buffelgrass within Saguaro National Park Rincon Mountain District, Arizona, 2015–18
The spread of the invasive and fire-adapted buffelgrass (Cenchrus ciliaris L.) threatens desert ecosystems by competing for resources, increasing fuel loads, and creating wildfire connectivity. The Rincon Mountain District of Saguaro National Park addressed this natural resource threat with the use of glyphosate-based herbicides (GBHs). In 2010, the Rincon Mountain District initiated an aerial res
AuthorsNicholas V. Paretti, Kimberly R. Beisner, Bruce Gungle, Michael T. Meyer, Bethany K. Kunz, Edyth Hermosillo, Jay R. Cederberg, Justine P. MayoHydrogeologic characterization of the Hualapai Plateau on the western Hualapai Indian Reservation, northwestern Arizona
This study was developed to assess if groundwater from the western Hualapai Plateau could be used to supply developments in the Grand Canyon West area of the Hualapai Indian Reservation and to collect hydrogeologic data for future use in a numerical groundwater model for the reservation. Ground-based geophysical surveys; existing well, spring, and other hydrogeologic information from previous studAuthorsJon P. Mason, Jamie P. Macy, Donald J. Bills, Bruce Gungle, Casey J.R. JonesReach-scale monitoring and modeling of rivers--Expanding hydraulic data collection beyond the cross section
For over 125 years, the U.S. Geological Survey streamgage network has provided important hydrologic information about rivers and streams throughout the Nation. Traditional streamgage methods provide reliable stage and streamflow data but typically only monitor stage at a single location in a river and require frequent calibration streamflow measurements. Direct measurements are not always feasibleAuthorsBrandon T. Forbes, Claire E. Bunch, Geoffrey DeBenedetto, Corey J. Shaw, Bruce GungleSpatial and temporal distribution of bacterial indicators and microbial-source tracking within Tumacácori National Historical Park and the upper Santa Cruz River, southern Arizona and northern Mexico, 2015–2016
Tumacácori National Historical Park (TUMA) in southern Arizona protects the culturally important Mission San José de Tumacácori, while also managing a part of the ecologically diverse riparian corridor of the Santa Cruz River. The quality of the water flowing through depends solely on upstream watershed activities, and among the water-quality issues concerning TUMA is the microbiological pathogens
AuthorsNicholas V. Paretti, Christopher M. Kephart, Thomas J. Porter, Edyth Hermosillo, Jay R. Cederberg, Justine P. Mayo, Bruce Gungle, Alissa L. Coes, Rachel S. Tucci, Laura M. NormanCharacterization of Big Chino subbasin hydrogeology near Paulden, Arizona, using controlled source audio-frequency magnetotelluric surveys
The Big Chino subbasin is located in central-northwest Arizona in the transition zone between the Colorado Plateau and the Basin and Range Province. The controlled source audio-frequency magnetotelluric (CSAMT) geophysical method, a low-impact, non-intrusive, electrical resistance sounding technique, was used to evaluate the subsurface hydrogeology of the southern third of the Big Chino subbasin.AuthorsJamie P. Macy, Bruce Gungle, Jon P. MasonAssessment of environmental flows in the middle Verde River watershed, Arizona
This report summarizes analyses of middle Verde River watershed environmental flows detailed in U.S. Geological Survey Scientific Investigations Report 2017-5100, “Preliminary synthesis and assessment of environmental flows in the middle Verde River watershed, Arizona," by N.V. Paretti, A.M.D. Brasher, S.L. Pearlstein, D.M. Skow, B. Gungle, and B.D. Garner.AuthorsBruce Gungle, Nicholas V. ParettiPreliminary synthesis and assessment of environmental flows in the middle Verde River watershed, Arizona
A 3-year study was undertaken to evaluate the suitability of the available modeling tools for characterizing environmental flows in the middle Verde River watershed of central Arizona, describe riparian vegetation throughout the watershed, and estimate sediment mobilization in the river. Existing data on fish and macroinvertebrates were analyzed in relation to basin characteristics, flow regimes,AuthorsNicholas V. Paretti, Anne M. D. Brasher, Susanna L. Pearlstein, Dena M. Skow, Bruce Gungle, Bradley D. GarnerHydrological conditions and evaluation of sustainable groundwater use in the Sierra Vista Subwatershed, Upper San Pedro Basin, southeastern Arizona
This study assessed progress toward achieving sustainable groundwater use in the Sierra Vista Subwatershed of the Upper San Pedro Basin, Arizona, through evaluation of 14 indicators of sustainable use. Sustainable use of groundwater in the Sierra Vista Subwatershed requires, at a minimum, a stable rate of groundwater discharge to, and thus base flow in, the San Pedro River. Many of the 14 indicatoAuthorsBruce Gungle, James B. Callegary, Nicholas V. Paretti, Jeffrey R. Kennedy, Christopher J. Eastoe, Dale S. Turner, Jesse E. Dickinson, Lainie R. Levick, Zachary P. SuggDevelopment of a shared vision for groundwater management to protect and sustain baseflows of the Upper San Pedro River, Arizona, USA
Groundwater pumping along portions of the binational San Pedro River has depleted aquifer storage that supports baseflow in the San Pedro River. A consortium of 23 agencies, business interests, and non-governmental organizations pooled their collective resources to develop the scientific understanding and technical tools required to optimize the management of this complex, interconnected groundwatAuthorsHolly E. Richter, Bruce Gungle, Laurel J. Lacher, Dale S. Turner, Brooke M. Bushman - News