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Climate Change Adaptation For Southern California Groundwater Managers: A Case Study Of The Six Basins Aquifer, Frank Lyles 2017 Pomona College

Climate Change Adaptation For Southern California Groundwater Managers: A Case Study Of The Six Basins Aquifer, Frank Lyles

Pomona Senior Theses

Groundwater has been very important to the economic development of Southern California, and will continue to be a crucial resource in the 21st century. However, Climate Change threatens to disrupt many of the physical and economic processes that control the flow of water in and out of aquifers. One groundwater manager, the Six Basins Watermaster in eastern Los Angeles and western San Bernardino Counties, has developed a long-term planning document called the Strategic Plan that mostly fails to address the implications of Climate Change, especially for local water supplies. This thesis presents an in-depth analysis of the Six Basin Watermaster ...


Increased Indigenous Participation In Environmental Decision-Making: A Policy Analysis For The Improvement Of Indigenous Health, Kerry Black, Edward McBean 2016 University of Guelph

Increased Indigenous Participation In Environmental Decision-Making: A Policy Analysis For The Improvement Of Indigenous Health, Kerry Black, Edward Mcbean

The International Indigenous Policy Journal

Improving the physical environment and Indigenous participation in environmental decision-making is inherently related to the improvement of health among Indigenous Peoples. Improving the state of the physical environment necessitates increased involvement by Indigenous communities in decision-making and policy development. This involvement must integrate local traditional knowledge (TK) as an important tool in the decolonization of environmental decision-making, and a necessary step towards the improvement of Indigenous health. With a focus on the physical environment as a social determinant of Indigenous health, this article highlights the need for increased Indigenous participation in the decision-making process on environmental issues and proposes a ...


Predicting Post-Fire Change In West Virginia, Usa From Remotely-Sensed Data, Michael Strager P. Strager, Melissa Thomas-Van Gundy, Aaron E. Maxwell 2016 West Virginia University

Predicting Post-Fire Change In West Virginia, Usa From Remotely-Sensed Data, Michael Strager P. Strager, Melissa Thomas-Van Gundy, Aaron E. Maxwell

Journal of Geospatial Applications in Natural Resources

Prescribed burning is used in West Virginia, USA to return the important disturbance process of fire to oak and oak-pine forests. Species composition and structure are often the main goals for re-establishing fire with less emphasis on fuel reduction or reducing catastrophic wildfire. In planning prescribed fires land managers could benefit from the ability to predict mortality to overstory trees. In this study, wildfires and prescribed fires in West Virginia were examined to determine if specific landscape and terrain characteristics were associated with patches of high/moderate post-fire change. Using the ensemble machine learning approach of Random Forest, we determined ...


Looking Upstream: An Analysis Of Low Water Levels In Lake Powell And The Impacts On Water Supply, Hydropower, Recreation, And The Environment: A Companion Report To The Bathtub Ring, Michael Johnson, Lindsey Ratcliff, Rebecca Shively, Leanne Weiss 2016 Selected Works

Looking Upstream: An Analysis Of Low Water Levels In Lake Powell And The Impacts On Water Supply, Hydropower, Recreation, And The Environment: A Companion Report To The Bathtub Ring, Michael Johnson, Lindsey Ratcliff, Rebecca Shively, Leanne Weiss

Michael Johnson

viii, 110 pages : color illustrations, color maps


Artificial Recharge In The Las Vegas Valley: An Operational History, Michael Johnson, Erin Cole, Kay Brothers 2016 Selected Works

Artificial Recharge In The Las Vegas Valley: An Operational History, Michael Johnson, Erin Cole, Kay Brothers

Michael Johnson

Artificially recharging the Las Vegas Valley (Valley) ground-water system with treated Colorado River water is one water resource management option employed by the Las Vegas Valley Water District (District) to help meet future long-term and short-term peak water demands. The District began operation of an artificial ground-water recharge program in 1988 in order to bank water for future use and to slow declining water levels. Artificial recharge occurs in the winter months, typically from October to May, when there is excess capacity in the Southern Nevada Water System (SNWS), currently a 400 Million Gallon per Day (MGD) treatment and transmission ...


A Review Of Reclaimed Water For Irrigation Use In An Urban Watershed, Anamarie Elizabeth Rivera 2016 University of South Florida

A Review Of Reclaimed Water For Irrigation Use In An Urban Watershed, Anamarie Elizabeth Rivera

Graduate Theses and Dissertations

It is well established that converting wastewater, a point-source of pollution, into reclaimed water makes management of nutrients more difficult. Not all service lines measure the volume of reclaimed water used by a customer, and frequently there are no restrictions on the amount of reclaimed water that is used. Nutrients applied in excess have the potential to runoff or leach through soils and contaminate surface and groundwater resources. This research attempted to determine if corresponding surface water quality monitoring sites in reclaimed service areas reflect elevated total nitrogen (TN) and total phosphorous (TP) concentrations.

The Joe’s Creek Watershed in ...


Identifying Groundwater-Dependent Wetlands Of The Broome Sandstone Aquifer In The La Grange Groundwater Area, Nicholas Wright, Richard J. George Dr, Robert Paul, Paul Raper 2016 Department of Agriculture and Food

Identifying Groundwater-Dependent Wetlands Of The Broome Sandstone Aquifer In The La Grange Groundwater Area, Nicholas Wright, Richard J. George Dr, Robert Paul, Paul Raper

Resource Management Technical Reports

This report identifies wetlands that are likely to be dependent on the Broome Sandstone aquifer within the La Grange groundwater allocation area. The Broome Sandstone aquifer is the dominant groundwater resource in the area. With potential agricultural growth of this area, it is necessary to understand, monitor and manage the aquifer and its dependent wetlands. This report describes how we created a watertable surface that was used to identify wetlands and to determine which of the previously mapped wetlands are likely to be sourced from the Broome Sandstone aquifer. A watertable surface was created from 148 points taken from bore ...


Isaw: Integrating Structure, Actors, And Water To Study Socio-Hydro-Ecological Systems, R. L. Hale, A. Armstrong, M. A. Baker, S. Bedingfield, D. Betts, C. Buahin, M. Buchert, T. Crowl, R. R. Dupont, J. R. Ehleringer, Joanna Endter-Wada, C. Flint, J. Grant, S. Hinners, J. S. Horsburgh, D. Jackson-Smith, A. S. Jones, C. Licon, S. E. Null, A. Odame, D. E. Pataki, D. Rosenberg, M. Runburg, P. Stoker, C. Strong 2016 University of Utah

Isaw: Integrating Structure, Actors, And Water To Study Socio-Hydro-Ecological Systems, R. L. Hale, A. Armstrong, M. A. Baker, S. Bedingfield, D. Betts, C. Buahin, M. Buchert, T. Crowl, R. R. Dupont, J. R. Ehleringer, Joanna Endter-Wada, C. Flint, J. Grant, S. Hinners, J. S. Horsburgh, D. Jackson-Smith, A. S. Jones, C. Licon, S. E. Null, A. Odame, D. E. Pataki, D. Rosenberg, M. Runburg, P. Stoker, C. Strong

R. Dupont

Urbanization, climate, and ecosystem change represent major challenges for managing water resources. Although water systems are complex, a need exists for a generalized representation of these systems to identify important components and linkages to guide scientific inquiry and aid water management. We developed an integrated Structure-Actor-Water framework (iSAW) to facilitate the understanding of and transitions to sustainable water systems. Our goal was to produce an interdisciplinary framework for water resources research that could address management challenges across scales (e.g., plot to region) and domains (e.g., water supply and quality, transitioning, and urban landscapes). The framework was designed to ...


In Situ Bioremediation Of Contaminated Unsaturated Subsurface Soils, Joseph L. Sims, R. C. Sims, R. R. Dupont, J. E. Mathews, M. M. Russell 2016 Selected Works

In Situ Bioremediation Of Contaminated Unsaturated Subsurface Soils, Joseph L. Sims, R. C. Sims, R. R. Dupont, J. E. Mathews, M. M. Russell

R. Dupont

An emerging technology for the remediation of unsaturated subsurface soils involves the use of microorganisms to degrade contaminants which are present in such soils. Understanding the processes which drive in situ bioremediation, as well as the effectiveness and efficiency of the utilization of these systems, are issues which have been identified by the Regional Superfund Engineering Forum as concerns of Superfund decision makers.


Analysis Of Managerial Decision-Making Within Florida’S Total Maximum Daily Load Program, Justin Barthle 2016 University of South Florida

Analysis Of Managerial Decision-Making Within Florida’S Total Maximum Daily Load Program, Justin Barthle

Graduate Theses and Dissertations

Water quality has evolved legislatively from protection of navigation routes and quantity of sources to more emphasis on impairments on water quality for surface and groundwater sources. Nonpoint or diffuse sources of impairments represents a major challenge for management due to the complexity of its sources and difficulty in tracking.

The most cited sections on public policy analysis focuses on the overall process agencies employ to understand the results the program yields. Often overlooked are finer details and mechanisms, such as decision-making and priority setting, which have a great impact on the overall process. To investigate these factors, we need ...


Drainage Water Storage For Improved Resiliency And Environmental Performance Of Agricultural Landscapes, B. Reinhart, J. Frankenberger, L. Abendroth, L. Ahiablame, L. Bowling, L. Brown, M. Helmers, D. Jaynes, X. Jia, K. Nelson, J. Strock, M. Youssef 2016 Purdue University

Drainage Water Storage For Improved Resiliency And Environmental Performance Of Agricultural Landscapes, B. Reinhart, J. Frankenberger, L. Abendroth, L. Ahiablame, L. Bowling, L. Brown, M. Helmers, D. Jaynes, X. Jia, K. Nelson, J. Strock, M. Youssef

Matthew J. Helmers

Drained lands, which include some of the most productive lands in the world, can experience both water excess and water deficit within a year. Storing drained water within the landscape could increase the sustainability of water for agriculture, particularly as intense rainfall and prolonged summer drought continue to increase under future climate change. A team of researchers and extension specialists from nine states are currently working towards a vision of transforming the process of designing and implementing agricultural drainage to include storage through the use of controlled drainage, saturated buffers, and drainage water recycling (i.e. capture, storage, and reuse ...


Comparing Nitrate Sink Strength In Perennial Filter Strips At Toeslopes Of Cropland Watersheds, David C. Mitchell, Xiaobo Zhou, Timothy B. Parkin, Matthew J. Helmers, Michael J. Castellano 2016 Iowa State University

Comparing Nitrate Sink Strength In Perennial Filter Strips At Toeslopes Of Cropland Watersheds, David C. Mitchell, Xiaobo Zhou, Timothy B. Parkin, Matthew J. Helmers, Michael J. Castellano

Matthew J. Helmers

Integration of perennial filter strips (PFS) into the toeslopes of agricultural watersheds may decrease downstream nitrate (NO3) losses. However, long-term NO3 removal depends on the relative importance of several NO3 sinks in the PFS. Plant biomass and labile soil organic matter (SOM) are temporary NO3 sinks, while stable SOM is a long-term, but potentially finite, NO3 sink. In contrast, denitrification is a permanent NO3 sink. We investigated the relative importance of these NO3 sinks in PFS at the toeslope of row crop watersheds in Iowa. Using 25- × 30-cm in situ mesocosms, we added 15NO3 to PFS soils and quantified 15NO3 ...


Comparison Of Timing And Volume Of Subsurface Drainage Under Perennial Forage And Row Crops In A Tile-Drained Field In Iowa, Ryan J. Goeken, Xiaobo Zhou, Matthew J. Helmers 2016 Iowa State University

Comparison Of Timing And Volume Of Subsurface Drainage Under Perennial Forage And Row Crops In A Tile-Drained Field In Iowa, Ryan J. Goeken, Xiaobo Zhou, Matthew J. Helmers

Matthew J. Helmers

Subsurface drainage systems in Iowa increase the productivity of annual row crops, such as corn and soybeans, but also contribute to alterations in the hydrological balance of the region and leaching of nutrient pollutants, such as NO3-N. This study’s objective was to determine whether perennial forage orchardgrass can reduce the volume and change the timing of subsurface drainage in tiled fields in Iowa, thereby contributing to reductions in NO3-N leaching and moderating changes in the hydrology. Research was conducted at Iowa State University’s Agricultural Drainage Water Research Site, located in northwest Iowa. Six 0.05 ha plots (three ...


Denitrification And Nitrous Oxide Emissions In Annual Croplands, Perennial Grass Buffers, And Restored Perennial Grasslands, Javed Iqbal, Timothy B. Parkin, Matthew J. Helmers, Xiaobo Zhou, Michael J. Castellano 2016 Iowa State University

Denitrification And Nitrous Oxide Emissions In Annual Croplands, Perennial Grass Buffers, And Restored Perennial Grasslands, Javed Iqbal, Timothy B. Parkin, Matthew J. Helmers, Xiaobo Zhou, Michael J. Castellano

Matthew J. Helmers

Inclusion of perennial vegetation filter strips (PFSs) in the toeslope of annual cropland watersheds can decrease NO3−–N losses to ground and surface waters. Although PFSs are similar to riparian buffers, the processes responsible for NO3−–N removal from PFSs are not well understood. Our objectives were to (i) determine the importance of denitrification as a sink for NO3−–N loss from PFSs and (ii) evaluate how PFSs alter the biophysical processes that affect the relative importance of N2O and N2 emissions. To address our objectives, we used a coupled field laboratory approach with experimental watersheds that included the following ...


Evaluating Denitrifying Bioreactors For Edge-Of-Field Nitrogen Management In Iowa's Tile-Drained Landsacpes, Matt Helmers, Alok Bhandari 2016 Iowa State University

Evaluating Denitrifying Bioreactors For Edge-Of-Field Nitrogen Management In Iowa's Tile-Drained Landsacpes, Matt Helmers, Alok Bhandari

Matthew J. Helmers

Bioreactors show significant potential for removing nitrate from Iowa’s drained fields. The investigators tested the design and management of bioreactors to see what factors can make the bioreactors operate most efficiently, and how that performance compares to other drainage water quality improvement practices.


Drainage Water Quality Impacts Of Current And Future Agricultural Management Practices, Matt Helmers, Ramesh S. Kanwar, Antonio P. Mallarino 2016 Iowa State University

Drainage Water Quality Impacts Of Current And Future Agricultural Management Practices, Matt Helmers, Ramesh S. Kanwar, Antonio P. Mallarino

Matthew J. Helmers

Researchers examined how crop tillage, rotation or crop residue removal can affect the chemical composition of water draining from farm fields.


Agronomic, Environmental And Economic Performance Of Alternative Biomass Cropping Systems, Lisa A. Schulte Moore, Kenneth J. Moore, Richard B. Hall, Arne Hallam, Matt Helmers 2016 Iowa State University

Agronomic, Environmental And Economic Performance Of Alternative Biomass Cropping Systems, Lisa A. Schulte Moore, Kenneth J. Moore, Richard B. Hall, Arne Hallam, Matt Helmers

Matthew J. Helmers

If cellulosic biomass is to play a significant role in America's energy future, research needs to be conducted on the optimal production and placement practices. This project looked at a portfolio of biomass cropping systems that might be adopted for Iowa.


Assessing Surface Flowpaths And Vegetative Buffers Using Arcgis Hydrologic Spatial Analysis For Rock Creek Watershed, Central Iowa, M. Bansal, S. K. Mickelson, M. J. Helmers, K. Arora, D. Webber, B. K. Gelder, M. Shrivastav, C. J. Judge 2016 Infospace, Inc.

Assessing Surface Flowpaths And Vegetative Buffers Using Arcgis Hydrologic Spatial Analysis For Rock Creek Watershed, Central Iowa, M. Bansal, S. K. Mickelson, M. J. Helmers, K. Arora, D. Webber, B. K. Gelder, M. Shrivastav, C. J. Judge

Matthew J. Helmers

Non point-source (NPS) pollution is a major cause of surface water quality degradation due to the transport of chemicals, nutrients, and sediments into lakes and streams. Vegetative buffers comprise several effective landscape Best Management Practices (BMPs) that include Vegetative Filter Strip (VFS) buffers, grassed waterways, terraces, and wetlands. However, some BMPs are ineffective due to concentrated surface flow, improper cropland/contributing area to VFS buffer area ratios, and flowpaths that completely bypass vegetative buffers. The primary objective of this study was to assess the effectiveness of VFS buffers and other vegetative BMPs to intercept surface runoff by quantifying the accuracy ...


Odm Tools Python: Open Source Software For Managing Continuous Sensor Data, Jeffery S. Horsburgh, Stephanie Reeder, Amber Spackman Jones 2016 Selected Works

Odm Tools Python: Open Source Software For Managing Continuous Sensor Data, Jeffery S. Horsburgh, Stephanie Reeder, Amber Spackman Jones

Stephanie Reeder

Hydrologic and water quality data is being collected at high frequencies, for extended durations, and with spatial distributions that require infrastructure for data storage and management. The Observations Data Model (ODM), which is part of the Consortium of Universities for the Advancement of Hydrologic Science, Inc. (CUAHSI) Hydrologic Information System (HIS), was developed as a framework in which to organize, store, and describe point observations data. In this paper we describe ODM Tools Python, which is an open source software application that allows ODM users to query and export, visualize, and edit data stored in an ODM database. Previous versions ...


An Economic Evaluation Of The Salinity Impacts From Energy Development: The Case Of The Upper Colorado River Basin, Rangesan Narayanan, Sumol Padungchai, A. Bruce Bishop 2016 Selected Works

An Economic Evaluation Of The Salinity Impacts From Energy Development: The Case Of The Upper Colorado River Basin, Rangesan Narayanan, Sumol Padungchai, A. Bruce Bishop

A. Bishop

To analyze the effect of potential energy development on water allocation and water quality in the Upper Colorado River Basin, a linear programming model is formulated. Using the model, changes in salinity are predicted. Further, least-cost strategies to maintain the established numeric salinity criteria through both structural and nonstructural alternatives are developed. The effectiveness of alternative control measures are examined within given institutional constraints. Based on cost-benefit analysis, optimal salinity levels over time are proposed. The economic feasibility of presently planned strucutral measures to reduce salinity is investigated and contrasted with nonstructural alternatives.


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