Use of the MODFLOW 6 water mover package to represent natural and managed hydrologic connections

Ground Water ◽  
2021 ◽  
Author(s):  
Eric D. Morway ◽  
Christian D. Langevin ◽  
Joseph D. Hughes
Keyword(s):  
Hydrologic Connections

River-Ditch Hydrologic Connections in a Traditionally Irrigated Agricultural Valley in New Mexico

2018 ◽  
Vol 144 (11) ◽  
pp. 04018032 ◽  
Author(s):  
Jose J. Cruz ◽  
Dawn M. VanLeeuwen ◽  
Alexander G. Fernald ◽  
Steven J. Guldan ◽  
Carlos G. Ochoa
Keyword(s):  
New Mexico ◽  
Hydrologic Connections

scholarly journals Maturity of nearby faults influences seismic hazard from hydraulic fracturing

2018 ◽  
Vol 115 (8) ◽  
pp. E1720-E1729 ◽  
Author(s):  
Maria Kozłowska ◽  
Michael R. Brudzinski ◽  
Paul Friberg ◽  
Robert J. Skoumal ◽  
Nicholas D. Baxter ◽  
...  
Keyword(s):  
Hydraulic Fracturing ◽  
Fluid Pressure ◽  
Stress Transfer ◽  
Induced Earthquakes ◽  
Geologic History ◽  
B Values ◽  
Pressure Diffusion ◽  
Hydrologic Connections ◽  
Paleozoic Rocks ◽  
High Pressure Injection

Understanding the causes of human-induced earthquakes is paramount to reducing societal risk. We investigated five cases of seismicity associated with hydraulic fracturing (HF) in Ohio since 2013 that, because of their isolation from other injection activities, provide an ideal setting for studying the relations between high-pressure injection and earthquakes. Our analysis revealed two distinct groups: (i) deeper earthquakes in the Precambrian basement, with larger magnitudes (M > 2), b-values < 1, and many post–shut-in earthquakes, versus (ii) shallower earthquakes in Paleozoic rocks ∼400 m below HF, with smaller magnitudes (M < 1), b-values > 1.5, and few post–shut-in earthquakes. Based on geologic history, laboratory experiments, and fault modeling, we interpret the deep seismicity as slip on more mature faults in older crystalline rocks and the shallow seismicity as slip on immature faults in younger sedimentary rocks. This suggests that HF inducing deeper seismicity may pose higher seismic hazards. Wells inducing deeper seismicity produced more water than wells with shallow seismicity, indicating more extensive hydrologic connections outside the target formation, consistent with pore pressure diffusion influencing seismicity. However, for both groups, the 2 to 3 h between onset of HF and seismicity is too short for typical fluid pressure diffusion rates across distances of ∼1 km and argues for poroelastic stress transfer also having a primary influence on seismicity.

Hydrologic Imaging of Fractured Rock

1994 ◽  
Vol 353 ◽  
Author(s):  
Kenzi Karasaki ◽  
Andrew Cohen ◽  
Paul Cook ◽  
Barry Freifeld ◽  
Ken Grossenbacher ◽  
...  
Keyword(s):  
Rock Mass ◽  
High Resolution ◽  
Seismic Tomography ◽  
Pressure Transducer ◽  
Fractured Rock ◽  
Geophysical Data ◽  
Pressure Measurements ◽  
Transient Pressure ◽  
Fractured Rock Mass ◽  
Hydrologic Connections

AbstractVarious geophysical and hydrologic tests were conducted in a cluster of nine wells to image the hydrologic connections of a fractured rock mass. Results of intra-borehole flow surveys and cross-hole radar and seismic tomography surveys correlated very well, and indicated that there is a major feature at a depth of 30m. Systematic injection tests were conducted in all nine wells. Three to four intervals in each well were isolated using pneumatic packers. Each interval was equipped with a high resolution pressure transducer. Some 130 injection tests were conducted, and more than 4,100 cross-hole transient pressure measurements were obtained. A computer algorithm was developed to analyze such massive interference data systematically. As a result of the analysis, an image of the fracture connections emerged which is consistent with the geophysical data.

USING A 12-YEAR RECORD TO EXAMINE HYDROLOGIC CONNECTIONS BETWEEN PRECIPITATION, DRIPWATER AND STREAM DISCHARGE IN JAMES CAVE (VIRGINIA)

2019 ◽  
Author(s):  
Madeline E. Schreiber ◽  
◽  
Megan Junod ◽  
Katarina Kosič Ficco ◽  
Thomas Malabad ◽  
...  
Keyword(s):  
Stream Discharge ◽  
Hydrologic Connections

scholarly journals Patterns of Rotifer Diversity in the Chihuahuan Desert

Diversity ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 393 ◽  
Author(s):  
Patrick D. Brown ◽  
Thomas Schröder ◽  
Judith V. Ríos-Arana ◽  
Roberto Rico-Martinez ◽  
Marcelo Silva-Briano ◽  
...  
Keyword(s):  
Chihuahuan Desert ◽  
Spatial Scales ◽  
Diversity Indices ◽  
Sampling Effort ◽  
Rock Pools ◽  
Empirical Bayesian Kriging ◽  
Resource Managers ◽  
Hydrologic Connections ◽  
The Usa ◽  
Lakes And Reservoirs

Desert aquatic systems are widely separated, lack hydrologic connections, and are subject to drought. However, they provide unique settings to investigate distributional patterns of micrometazoans, including rotifers. Thus, to understand rotifer biodiversity we sampled 236 sites across an array of habitats including rock pools, springs, tanks, flowing waters, playas, lakes, and reservoirs in the Chihuahuan Desert of the USA (n = 202) and Mexico (n = 34) over a period of >20 years. This allowed us to calculate diversity indices and examine geographic patterns in rotifer community composition. Of ~1850 recognized rotifer species, we recorded 246 taxa (~13%), with greatest diversity in springs (n = 175), lakes (n = 112), and rock pools (n = 72). Sampling effort was positively related to observed richness in springs, lakes, rivers, and tanks. Nestedness analyses indicated that rotifers in these sites, and most subsets thereof, were highly nested (support from 4 null models). Distance was positively correlated with species composition dissimilarity on small spatial scales. We predicted species richness for unsampled locations using empirical Bayesian kriging. These findings provide a better understanding of regional rotifer diversity in aridlands and provide information on potential biodiversity hotspots for aquatic scientists and resource managers.

scholarly journals Exploring hydrologic connections between tropical mountain wetlands and glacier recession in Peru's Cordillera Blanca

2017 ◽  
Vol 78 ◽  
pp. 94-103 ◽  
Author(s):  
Molly H. Polk ◽  
Kenneth R. Young ◽  
Michel Baraer ◽  
Bryan G. Mark ◽  
Jeffrey M. McKenzie ◽  
...  
Keyword(s):  
Cordillera Blanca ◽  
Tropical Mountain ◽  
Glacier Recession ◽  
Hydrologic Connections

CHARACTERIZING HYDROLOGIC CONNECTIONS AND KARSTIFICATION IN SISTEMA HUAUTLA FROM EXPLORATION AND DYE TRACING

2018 ◽  
Author(s):  
Fernando Hernandez ◽  
◽  
Jason S. Polk ◽  
Patricia N. Kambesis ◽  
James Smith ◽  
...  
Keyword(s):  
Dye Tracing ◽  
Hydrologic Connections

scholarly journals Evaluation of Stream and Wetland Restoration Using UAS-Based Thermal Infrared Mapping

Water ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1568 ◽  
Author(s):  
Mark C. Harvey ◽  
Danielle K. Hare ◽  
Alex Hackman ◽  
Glorianna Davenport ◽  
Adam B. Haynes ◽  
...  
Keyword(s):  
Surface Water ◽  
Ecological Restoration ◽  
Wetland Restoration ◽  
Large Scale ◽  
Groundwater Discharge ◽  
Thermal Infrared ◽  
Ecosystem Structure ◽  
Hydrologic Connections ◽  
Water Ecosystem ◽  
And Function

Large-scale wetland restoration often focuses on repairing the hydrologic connections degraded by anthropogenic modifications. Of these hydrologic connections, groundwater discharge is an important target, as these surface water ecosystem control points are important for thermal stability, among other ecosystem services. However, evaluating the effectiveness of the restoration activities on establishing groundwater discharge connection is often difficult over large areas and inaccessible terrain. Unoccupied aircraft systems (UAS) are now routinely used for collecting aerial imagery and creating digital surface models (DSM). Lightweight thermal infrared (TIR) sensors provide another payload option for generation of sub-meter-resolution aerial TIR orthophotos. This technology allows for the rapid and safe survey of groundwater discharge areas. Aerial TIR water-surface data were collected in March 2019 at Tidmarsh Farms, a former commercial cranberry peatland located in coastal Massachusetts, USA (41°54′17″ N 70°34′17″ W), where stream and wetland restoration actions were completed in 2016. Here, we present a 0.4 km2 georeferenced, temperature-calibrated TIR orthophoto of the area. The image represents a mosaic of nearly 900 TIR images captured by UAS in a single morning with a total flight time of 36 min and is supported by a DSM derived from UAS-visible imagery. The survey was conducted in winter to maximize temperature contrast between relatively warm groundwater and colder ambient surface environment; lower-density groundwater rises above cool surface waters and thus can be imaged by a UAS. The resulting TIR orthomosaic shows fine detail of seepage distribution and downstream influence along the several restored channel forms, which was an objective of the ecological restoration design. The restored stream channel has increased connectivity to peatland groundwater discharge, reducing the ecosystem thermal stressors. Such aerial techniques can be used to guide ecological restoration design and assess post-restoration outcomes, especially in settings where ecosystem structure and function is governed by groundwater and surface water interaction.

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