General Photos |
![Center-pivot irrigation sprinkler.](photos/tn_centerpivot.jpg)
Center-pivot
irrigation sprinkler
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![Feedlot near Guymon, Oklahoma.](photos/tn_cows.jpg)
Feedlot near
Guymon, Oklahoma
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![Ariel view of center-pivot field near Elkhart, Kansas.](photos/tn_cropcircle.jpg)
Ariel view of
center-pivot field near Elkhart, Kansas
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![The escarpment created by the relatively resistant High Plains aquifer, viewed from northern Weld Co., Colorado.](photos/tn_escarpment.jpg)
The escarpment created by the relatively resistant
High Plains aquifer, viewed from northern
Weld Co., Colorado
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![Oil well near Guymon, Oklahoma.](photos/tn_oilwell.jpg)
Oil well near
Guymon, Oklahoma
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![Outcrop of the Ogallala Formation, the main water-bearing unit if the High Plains aquifer, near the Canadian River in Texas.](photos/tn_outcrop.jpg)
Outcrop of the Ogallala Formation,
the main water-bearing unit if the High Plains
aquifer, near the Canadian River in Texas
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![Playa lake; a dominant feature of the High Plains area in the panhandle of Texas.](photos/tn_playa.jpg)
Playa lake; a dominant feature of the High Plains
area in the panhandle of Texas
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![An Oklahoma High Plains sunset.](photos/tn_sunset.jpg)
An Oklahoma High Plains sunset
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![Harvesting alfalfa near the Cimarron River in Kansas](photos/tn_tractor.jpg)
Harvesting alfalfa near the Cimarron River in Kansas
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![Wheat field; a major crop in the central High Plains area](photos/tn_wheat.jpg)
Wheat field; a major crop in the central High Plains area
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![Windmill near Turon, Kansas](photos/tn_windmill.jpg)
Windmill near Turon, Kansas
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![Irrigated corn.](photos/tn_centpivotcorn2.jpg)
Irrigated corn
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![Local Texas resident, southern High Plains.](photos/tn_longhorn.jpg)
Local Texas resident, southern High Plains.
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![A sea of sunflowers, southern High Plains.](photos/tn_sunflowers.jpg)
A sea of sunflowers, southern High Plains.
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![Earth, Texas, southern High Plains.](photos/tn_earthtx.jpg)
Earth, Texas, southern High Plains.
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![Rangeland setting of the norhtern High Plains.](photos/tn_muledeer.jpg)
Rangeland setting of the norhtern High Plains.
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![Rangeland setting in the Nebraska Sandhills, northern High Plains.](photos/tn_nhpsandhills.jpg)
Rangeland setting in the Nebraska Sandhills, northern High Plains.
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![High-capacity irrigation well typical of the High Plains irrigated agricultural setting.](photos/tn_irrigwell.jpg)
High-capacity irrigation well typical of the High Plains irrigated agricultural setting.
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![Ground-water sample collection inside a HPGW sampling vehicle.](photos/tn_sampling.jpg)
Ground-water sample collection inside a HPGW sampling vehicle.
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Transect Study |
![Ariel view of the Cimarron transect site near the Cimarron River in Kansas.](photos/tn_transect_air.jpg)
Ariel view of the Cimarron transect site near the Cimarron River in Kansas
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![Developing the Cimarron transect well using air.](photos/tn_transect_drill.jpg)
Developing the Cimarron transect well using air
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![Drilling rig used for drilling transect wells; site near Liberal Kansas.](photos/tn_transect_drill2.jpg)
Drilling rig used for drilling transect wells; site near Liberal Kansas
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![Close-up of transect-site drill rig; Cimarron site.](photos/tn_transect_drill3.jpg)
Close-up of transect-site drill rig; Cimarron site
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![Core from the Permian red beds that underlie the High Plains aquifer in southwestern Kansas and the Oklahoma panhandle.](photos/tn_permiancore.jpg)
Core from the Permian red beds that underlie the High Plains aquifer
in southwestern Kansas and the Oklahoma panhandle
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![Ariel view of center pivots in the Panhandle of Texas, southern High Plains.](photos/tn_aircentpivot.jpg)
Ariel view of center pivots in the Panhandle of Texas, southern High Plains.
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![Installation of a transect-study well in the rangeland of the northern High Plains.](photos/tn_nhprange.jpg)
Installation of a transect-study well in the rangeland of the northern High Plains.
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![Development of a ground-water well.](photos/tn_welldev.jpg)
Development of a ground-water well.
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Unsaturated-Zone Study |
![Special drill rig used for drilling the unsaturated-zone study wells. The drill rig is a casing-advance type that brings cuttings to the surface using air rather than fluid.](photos/tn_unsat_drill.jpg)
Special drill rig used for drilling the unsaturated-zone study wells.
The drill rig is a casing-advance type that brings cuttings to the surface
using air rather than fluid.
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![Instrumentation for monitoring the unsaturated zone in the central High Plains.](photos/tn_unsat_instruments.jpg)
Instrumentation for monitoring the unsaturated zone in the central High
Plains
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![Detail of surface-installation at the unsaturated-zone study sites, central High Plains.](photos/tn_surface_install.jpg)
Detail of surface-installation at the unsaturated-zone study sites, central High Plains.
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![Gas sampling in the mobile water-quality lab, central High Plains.](photos/tn_gas_sampling.jpg)
Gas sampling in the mobile water-quality lab, central High Plains.
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![Collection of core for analysis of physical properties and chemical analysis.](photos/tn_coregetting.jpg)
Collection of core for analysis of physical properties and chemical analysis.
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![Collection of drill cuttings.](photos/tn_cuttings2.jpg)
Collection of drill cuttings.
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![Installation of heat dissipation probes, suction lysimeters, and gas sampling ports.](photos/tn_hangerinstall3.jpg)
Installation of heat dissipation probes, suction lysimeters, and gas sampling ports.
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![Well installation using casing-advance drilling technology.](photos/tn_Insthangers.jpg)
Well installation using casing-advance drilling technology.
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![Installation of a meteorological station at a northern High Plains rangeland site.](photos/tn_weatherst1.jpg)
Installation of a meteorological station at a northern High Plains rangeland site.
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![Installed meteorological station at a northern High Plains rangeland site.](photos/tn_weatherst2.jpg)
Installed meteorological station at a northern High Plains rangeland site.
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![Gas collection from water sampled from an unsaturated-zone study well.](photos/tn_gassamp.jpg)
Gas collection from water sampled from an unsaturated-zone study well.
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Reconnaissance Study |
![Geophysical logging](photos/tn_recon_sampling.jpg)
Geophysical logging
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![Bailing a well](photos/tn_recon_bailing.jpg)
Bailing a well
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![Completed well](photos/tn_hitchwell.jpg)
Completed well
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![Set-up for sampling the wells; a mobile water-quality lab and a pickup to hold the pump.](photos/tn_recon_trucks.jpg)
Set-up for sampling the wells; a mobile water-quality lab and a pickup
to hold the pump.
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![Special pump used for sampling wells where there is a large depth to water.](photos/tn_bennet_pump.jpg)
Special pump used for sampling wells where there is a large depth
to water
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Focused-Flow Study |
![Collection of soil cores using a geoprobe, northern High Plains.](photos/tn_geoprobe.jpg)
Collection of soil cores using a geoprobe, northern High Plains.
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![Application of KBr tracer to estimate infiltration rates at an unsaturated-zone well installation.](photos/tn_KBrspray3.jpg)
Application of KBr tracer to estimate infiltration rates at an unsaturated-zone well installation.
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Land-Use Studies |
![Installation of land-use monitoring well at sunset on the southern High Plains.](photos/tn_sunsetdrilling.jpg)
Installation of land-use monitoring well at sunset on the southern High Plains.
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