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Articles 2131 - 2160 of 5272
Full-Text Articles in Hydrology
Slides: Food Production: Technical Challenges In Agricultural Water Conservation, Perry Cabot
Slides: Food Production: Technical Challenges In Agricultural Water Conservation, Perry Cabot
Innovations in Managing Western Water: New Approaches for Balancing Environmental, Social and Economic Outcomes (Martz Summer Conference, June 11-12)
Presenter: Dr. Perry Cabot, Research Scientist and Extension Specialist, Colorado Water Institute, Colorado State University
35 slides
Agenda: Innovations In Managing Western Water: New Approaches For Balancing Environmental, Social, And Economic Outcomes, University Of Colorado Boulder. Getches-Wilkinson Center For Natural Resources, Energy, And The Environment
Agenda: Innovations In Managing Western Water: New Approaches For Balancing Environmental, Social, And Economic Outcomes, University Of Colorado Boulder. Getches-Wilkinson Center For Natural Resources, Energy, And The Environment
Innovations in Managing Western Water: New Approaches for Balancing Environmental, Social and Economic Outcomes (Martz Summer Conference, June 11-12)
Many aspects of western water allocation and management are the product of independent and uncoordinated actions, several occurring a century or more ago. However, in this modern era of water scarcity, it is increasingly acknowledged that more coordinated and deliberate decision-making is necessary for effectively balancing environmental, social, and economic objectives. In recent years, a variety of forums, processes, and tools have emerged to better manage the connections between regions, sectors, and publics linked by shared water systems. In this event, we explore the cutting edge efforts, the latest points of contention, and the opportunities for further progress.
Slides: Six Decades Of Texas Water Planning, Ronald Kaiser
Slides: Six Decades Of Texas Water Planning, Ronald Kaiser
Innovations in Managing Western Water: New Approaches for Balancing Environmental, Social and Economic Outcomes (Martz Summer Conference, June 11-12)
Presenter: Ronald Kaiser, Professor of Water Law and Policy, Chair of Graduate Water Degree Program, Texas A&M University
32 slides
Slides: Urban Water Reliability And The Salton Sea: Can We Have Both?, Michael Cohen
Slides: Urban Water Reliability And The Salton Sea: Can We Have Both?, Michael Cohen
Innovations in Managing Western Water: New Approaches for Balancing Environmental, Social and Economic Outcomes (Martz Summer Conference, June 11-12)
Presenter: Michael Cohen, Senior Research Associate, Pacific Institute
29 slides
Slides: Moffat Collection System Project, Travis Bray
Slides: Moffat Collection System Project, Travis Bray
Innovations in Managing Western Water: New Approaches for Balancing Environmental, Social and Economic Outcomes (Martz Summer Conference, June 11-12)
Presenter: Travis Bray, Project Manager, Moffat Collection System Project, Denver Water
45 slides
Slides: Ag Water Sharing: Legal Challenges And Considerations, Peter D. Nichols
Slides: Ag Water Sharing: Legal Challenges And Considerations, Peter D. Nichols
Innovations in Managing Western Water: New Approaches for Balancing Environmental, Social and Economic Outcomes (Martz Summer Conference, June 11-12)
Presenter: Peter D. Nichols, Esq., Partner, Berg, Hill, Greenleaf and Ruscitti, Boulder, CO
25 slides
U.S. Drought Monitor, June 2, 2015, David Miskus
U.S. Drought Monitor, June 2, 2015, David Miskus
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for June 2, 2015 (6/2/15) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
Fire, Fuels, And Streams: The Effects And Effectiveness Of Riparian Treatments, Josh Mcdaniel
Fire, Fuels, And Streams: The Effects And Effectiveness Of Riparian Treatments, Josh Mcdaniel
Joint Fire Science Program Digests
Fire is an important disturbance in riparian systems—consuming vegetation; increasing light; creating snags and debris flows; altering habitat structure; and affecting stream conditions, erosion, and hydrology. For many years, land managers have worked to keep fire out of riparian systems through the use of buffers. A number of projects funded by the Joint Fire Science Program are shedding light on the dynamics of fire in riparian systems. Recent research and field practice have shown that (1) riparian treatments can be beneficial and are not as risky as previously thought; and (2) riparian treatments need the “Goldilocks” prescribed fire—not too hot …
Ua24 Mcicsl Newsletter - June 2015, Shannon R. Trimboli Education Coordinator
Ua24 Mcicsl Newsletter - June 2015, Shannon R. Trimboli Education Coordinator
MCICSL Newsletter
This issue includes the following:
Dayton Regional STEM School participates in 5 citizen science projects over 2 days
Public dye traces provide valuable research knowledge and public engagement
Barren County Middle School students collect dragonfly larvae for multi-park citizen science project
as well as Summer research projects, in the news and new interns.
Umphlett Qci June 2015, Natalie A. Umphlett
Umphlett Qci June 2015, Natalie A. Umphlett
High Plains Regional Climate Center: Staff Publications
Highlights for the Basin
Temperature and Precipitation Anomalies
Drought Conditions
Water Supplies Recovering
Heavy Rains Cause Flooding
Agriculture Impacts
3-Month Precipitation and Temperature Outlooks
Hydrologic Response To Conifer Removal From An Encroached Mountain Meadow, Gregory F. Van Oosbree
Hydrologic Response To Conifer Removal From An Encroached Mountain Meadow, Gregory F. Van Oosbree
Master's Theses
Meadows in the Sierra Nevada Mountains are an important ecological resource that have degraded in quality and distribution due to several environmental and anthropogenic stressors. The encroachment of conifers beyond forest meadow ecotones is largely responsible for the decline of meadow habitat throughout the past century. Currently, there is little research that quantifies the hydrologic response to removal of conifers encroaching meadows in terms of implicating successful meadow restoration. This study has implemented a before after control intervention (BACI) study design to determine the hydrologic response associated with the removal of conifers from a historic meadow encroached by conifers. The …
Fluxes Of Dissolved Organic Carbon During Storm Events In The Neponset River Watershed, Keith Thomas Cialino
Fluxes Of Dissolved Organic Carbon During Storm Events In The Neponset River Watershed, Keith Thomas Cialino
Graduate Doctoral Dissertations
The transport of dissolved organic carbon (DOC) and chromophoric dissolved organic matter (CDOM) from land to coastal environments strongly influences coastal ecosystems. The presence of first flush phenomena due to rainwater runoff traveling from land into waterways can greatly affect carbon fluxes to coastal areas. This research utilizes sensors, autosamplers, and standard watershed sampling in order to assess for the presence of first flush and its significance. A rainfall simulator was built in order to collect runoff on two land use types. Time series data suggest that first flush of dissolved organic carbon was present for all rainfall intensities simulated …
U.S. Drought Monitor, May 26, 2015, Brad Rippey
U.S. Drought Monitor, May 26, 2015, Brad Rippey
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for May 26, 2015 (5/26/15) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
U.S. Drought Monitor, May 19, 2015, Brad Rippey
U.S. Drought Monitor, May 19, 2015, Brad Rippey
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for May 19, 2015 (5/19/15) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
U.S. Drought Monitor, May 12, 2015, Brian Fuchs
U.S. Drought Monitor, May 12, 2015, Brian Fuchs
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for May 12, 2015 (5/12/15) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
U.S. Drought Monitor, May 5, 2015, Mark D. Svoboda
U.S. Drought Monitor, May 5, 2015, Mark D. Svoboda
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for May 5, 2015 (5/5/15) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
Stable Isotopes As A Tool To Characterize Carbon Cycling And Develop Hydrologic Budgets In Mantled Karst Settings, Katherine Knierim
Stable Isotopes As A Tool To Characterize Carbon Cycling And Develop Hydrologic Budgets In Mantled Karst Settings, Katherine Knierim
Graduate Theses and Dissertations
Isotopes of water (δ2H/δ18O), carbon dioxide (δ13C-CO2), and dissolved inorganic carbon (δ13C-DIC) were used to explore water quality, trace carbon cycling, and quantify recharge sources through mantled karst and into Blowing Spring Cave (BSC). Of the possible sources of contamination in the BSC recharge area, septic-tank effluent was hypothesized to degrade water quality at the spring outlet of BSC because of the dominance of septic tanks for waste treatment, unsuitable topography and soil for septic-tank absorption fields, increased nitrate and chloride concentrations concomitant with increased urbanization, and increased Escherichia coli with discharge. Carbon cycling between the soil and BSC was …
Cockatoo Sands In The Victoria Highway And Carlton Hill Areas, East Kimberley: Land Capability Assessment For Developing Irrigated Agriculture, Henry Smolinski, Shahab Pathan, Paul Galloway, Kus Kuswardiyanto, Justin Laycock
Cockatoo Sands In The Victoria Highway And Carlton Hill Areas, East Kimberley: Land Capability Assessment For Developing Irrigated Agriculture, Henry Smolinski, Shahab Pathan, Paul Galloway, Kus Kuswardiyanto, Justin Laycock
Resource management technical reports
This report identifies areas of Cockatoo Sands adjacent to the Ord River Irrigation Area (ORIA), Kununurra, with high potential for developing irrigated agriculture. It builds on a reconnaissance soil survey conducted in 2009 which identified significant areas of sandy and loamy soils in the Kununurra area that could be suitable for agriculture.
Effects Of Landscape Disturbances On Autotrophic Processes Within Arkansas Ozark Streams, Bradley J. Austin
Effects Of Landscape Disturbances On Autotrophic Processes Within Arkansas Ozark Streams, Bradley J. Austin
Graduate Theses and Dissertations
Land-use change is one of the most widespread human impacts and can influence abiotic and biotic processes within surrounding streams. For example, streams in agricultural and urban watersheds receive greater light and nutrient inputs that can promote increased algal growth and primary production. Natural gas (NG) infrastructure development, a recent land use change in many regions, may also stimulate forested stream primary production, by reducing forest cover and increasing sediments and nutrient transport. I sampled streams across a NG activity gradient for algal biomass and gross primary production (GPP) to assess potential effects of this emerging land-use type. Algal biomass …
Hydrologic Mediation Of The Spatial And Temporal Variability Of The Soil Carbon Dioxide Stable Isotopic Composition Of A Subalpine Watershed, Theresa Marie Lorenzo
Hydrologic Mediation Of The Spatial And Temporal Variability Of The Soil Carbon Dioxide Stable Isotopic Composition Of A Subalpine Watershed, Theresa Marie Lorenzo
School of Natural Resources: Dissertations, Theses, and Student Research
The stable carbon isotopic composition of CO2 (δ13C-CO2) has been studied as an indicator of changes in ecosystem CO2 exchange. Soil moisture is an important factor in ecosystem CO2 exchange through its influence on physiological and soil physical processes. However, the majority of previous research analyzing the influence of soil moisture on soil and soil-respired δ13C-CO2 has been conducted with limited consideration of topographical variation, which controls the distribution of soil moisture across a landscape. This study characterized the stable isotopic composition (δ13C) and concentrations of soil CO …
Comparing Slug Test Methods For Unconfined Aquifers, Hussain Jaber Alfaifi
Comparing Slug Test Methods For Unconfined Aquifers, Hussain Jaber Alfaifi
Dissertations
Slug test methods are used to determine in situ aquifer hydraulic conductivity (K) more quickly and economically than a pump test can. This study compares slug test methods for unconfined aquifers, looking at how to conduct a test using a physical slug, and at different analysis methods including Bouwer and Rice (1976), Kansas Geological Survey (KGS 1994), Hvorslev (1951) and Dagan (1978). Questions that motivated this study include: How well does the Bouwer and Rice method work? What is the most effective way to conduct a slug test? Does using a large physical slug relative to the well diameter and …
Basic Guide For Description Of Cuttings From Boreholes In Nebraska, Dana P. Divine, R. M. Joeckel, Jesse T. Korus
Basic Guide For Description Of Cuttings From Boreholes In Nebraska, Dana P. Divine, R. M. Joeckel, Jesse T. Korus
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Determining Discharge From The Fallasburg Dam And The Hydrology Of The Flat River Bypass Channel, Lowell, Michigan, Seth Kuiper
Determining Discharge From The Fallasburg Dam And The Hydrology Of The Flat River Bypass Channel, Lowell, Michigan, Seth Kuiper
Masters Theses
The Fallasburg Dam on the Flat River is required to release 110 cfs to the Bypass Channel. Residents have often reported low flows in the river, especially during the summer. The hydrology of the Bypass Channel downstream from the dam was investigated to determine whether the required flow was being released. Discharge measured at multiple transects reveal a shifts from gaining to losing conditions during the year. Gaining conditions occur during the spring and after significant rain events; losing conditions occur in the summer during dry periods. Five discharge measurements in 2013 and three in 2014 reveal flows less than …
Subsurface Fluid Flow Through The Mississippian Section Of North-Central Oklahoma, Carolyn Brown
Subsurface Fluid Flow Through The Mississippian Section Of North-Central Oklahoma, Carolyn Brown
Graduate Theses and Dissertations
This study consisted of using drill stem tests, seismic amplitude data, and well logs to create the parameters needed to construct a groundwater flow model for a portion of Osage County. At the start, a potentiometric map of Osage County, Oklahoma was generated to use as a basis for the initial hydraulic heads and the constant heads in the model. Next, three seismic amplitude images were produced in a seismic interpretation program, OpenDtect, to base the hydraulic conductivity values on. In addition, utilizing Gamma Ray on 12 separate wells east-west across the county, a structural cross-section was created within Petra. …
Controls On Dissolution Rate Variation At A Pair Of Underflow-Overflow Springs At The Savoy Experimental Watershed, Kiefer Allen Vaughn
Controls On Dissolution Rate Variation At A Pair Of Underflow-Overflow Springs At The Savoy Experimental Watershed, Kiefer Allen Vaughn
Graduate Theses and Dissertations
Physical dissolution experiments and numerical modeling have been used in the past to study limestone dissolution rates. Numerical models have typically used constant dissolution rates, whereas rates in nature vary in time. Limestone tablets allow natural estimation of rates over month time scales, but these rates cannot necessarily be extrapolated to geologic timescales and also do not aid our understanding of short term variability. This study characterizes natural variability in these rates and examines potential causes of that variability from first principles. This may enable more accurate projections of dissolution rates within models. This study combines measurement of physical and …
Using Kriging, Cokriging, And Gis To Visualize Fe And Mn In Groundwater, Crystal Johnson
Using Kriging, Cokriging, And Gis To Visualize Fe And Mn In Groundwater, Crystal Johnson
Electronic Theses and Dissertations
For aesthetic, economic, and health-related reasons, allowable concentrations of iron (Fe) and manganese (Mn) found present in drinking water are 0.3 mg/L and 0.05 mg/L, respectively. Water samples taken from private drinking wells in the rural communities within Buncombe County, North Carolina contain amounts of these metals in concentrations higher than the suggested limits. This study focused on bedrock geology, elevation, saprolite thickness, and well depth to determine factors affecting Fe and Mn. Using ArcGIS 10.2, spatial trends in Fe and Mn concentrations ranges were visualized, and estimates of the metal concentrations were interpolated to unmonitored areas. Results from this …
U.S. Drought Monitor, April 28, 2015, Anthony Artusa
U.S. Drought Monitor, April 28, 2015, Anthony Artusa
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for April 28, 2015 (4/28/15) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
Influence Of Road Salt Deicers On Anaerobic Respiration And Metal Speciation In Soils, Danielle Dupuis
Influence Of Road Salt Deicers On Anaerobic Respiration And Metal Speciation In Soils, Danielle Dupuis
Honors Theses
Road salt deicers, especially NaCl and CaCl2, are used throughout the world on paved areas during the winter. Previous studies suggest that road salt deicers can alter the biogeochemistry of sediment located near roadways and influence the mobility of heavy metals. The goal of this study is to investigate the influence of CaCl2 on wetland soil biogeochemistry, especially trace metal speciation. Sediment cores were collected in the fall from a freshwater wetland near an urban kettle lake (Asylum Lake, Kalamazoo, MI) and incubated for 100 days in deionized water (control), 5 g/L of CaCl2, or …
U.S. Drought Monitor, April 21, 2015, Anthony Artusa
U.S. Drought Monitor, April 21, 2015, Anthony Artusa
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for April 21, 2015 (4/21/15) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
Model Of Residence Time And Analysis Of Nitrogen Removal For Two Constructed Wetlands At The Franklin Demonstration Farm In Lexington, Illinois, Emma Singh Baghel
Model Of Residence Time And Analysis Of Nitrogen Removal For Two Constructed Wetlands At The Franklin Demonstration Farm In Lexington, Illinois, Emma Singh Baghel
Theses and Dissertations
Pollution from nonpoint agricultural runoff has become a major problem facing our streams and rivers today. Not only are fish and aquatic life affected, but so is the quality of our drinking and recreational water resources. Studies have shown that wetlands have proven to be the most cost-effective and low maintenance method of removing nonpoint or diffused contaminate inputs. The biological processes and removal of nutrients in wetlands depend on the total surface area available for microbial activity in the soil and a certain period of water retention time. Since chemical processes take time, the measure of residence time is …