Index Catalog // ScholarsArchive@OSU

Spatial and Temporal Patterns in the Influence of Land Use on Water Quality in Five Portland Area Creeks Representing Differing Levels of Urbanization

Creator:: Steele, Madeline, Bonak, Zoe, and Chang, Heejun
Abstract:: While the negative effects of urban development on freshwater systems are well documented, impacts of human disturbance on water quality vary depending on land cover, local climate, and temporal and spatial scales of analysis. To better understand this variation, we analyzed water quality data for a total of 15 sites...
Resource Type:: Presentation
Full Text:: parameters, precipitation, and land use in six Portland, Oregon streams The Oregon Water Conference May

Growth Management-oriented Water Conservation and Reuse in Oregon: Operationalizing Integrated Watershed and Water Resources Management

Creator:: Cavallaro, Jamison
Abstract:: Oregon’s largest metropolitan region, Greater Portland, is home to a diverse array of water utilities though few have sufficiently robust water reuse and conservation goals. In determining the most beneficial way to allocate water-related public goods and natural resource management services, Oregonians are adapting to stronger legal standards among other...
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Full Text:: Portland area since the early 1990's. Another factor that influenced water demands was the enactment of

Flood Forecast Modeling of the Willamette Basin Using HEC-CWMS and HEC-ResSim

Creator:: Bogavelli, Shali, Christensen, Daniel, and Goodell, Chris
Abstract:: WEST Consultants, Inc. (WEST) worked with the U.S. Army Corps of Engineers (USACE) Hydrologic Engineering Center (HEC) to enhance the flood forecasting capability and management strategies for the Willamette Basin. Specifically, WEST was contracted by the HEC to modify the existing HEC-ResSim model of the Willamette Basin. Reservoir operation schemes...
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Full Text:: deployment of the LA, Omaha, Portland, and Mobile District CWMS models. Data Acquisition (Observations

Building a Legacy: Integrated Water Resources Management in Damascus, Oregon

Creator:: Gaschler, Steve, Anderson, Mark A., Callaway, Emily, and Green, David
Abstract:: The City of Damascus, Oregon has a current population of nearly 10,000 people and expects to grow to 50,000 residents by 2060. On the eastern edge of the Portland metropolitan area, the City is located in the Clackamas and Willamette basins with an area of almost 12,000 acres. Semi-rural in...
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Full Text:: eliminate or revise the wording of “Pilot Study Area” if that is confusing. 3 Damascus, Oregon - Watersheds

Climate Change and Shifts in Water Related Ecosystem Services in the Tualatin and Yamhill River Basins

Creator:: Chang, Heejun, Anthony, Terrance, Ennaanay, Driss, and Sharma, Manu
Abstract:: Water related ecosystem services (WES), such as flow regulation, drinking water supply, temperature regulation, and water recreational activities, are affected by anthropogenic climate change. Forecasting potential shifts in such WES is critical to identifying the form and magnitude of likely impacts. We quantified the levels and values of WES under...
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Full Text:: , Terrance Anthony Department of Geography, Portland State University Driss Ennaanay, Manu Sharma Natural

Reconnaissance Investigation of Emerging Contaminants in Wastewater-Treatment-Plant Effluent and Stormwater Runoff in the Columbia River Basin

Creator:: Morace, Jennifer
Abstract:: In order to efficiently reduce toxic loading to the Columbia River basin, sources and pathways need to be identified. Little is known about the toxic loadings coming from wastewater-treatment facilities and stormwater runoff in the system. This study provides preliminary data on these sources and pathways throughout the basin. The...
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Full Text:: highest numbers of detections were found in the Portland/Willamette area DDT Usually find degradate, DDE

Reconnaissance Investigation of Emerging Contaminants in Wastewater-Treatment-Plant Effluent and Stormwater Runoff in the Columbia River Basin

Creator:: Morace, Jennifer
Abstract:: In order to efficiently reduce toxic loading to the Columbia River basin, sources and pathways need to be identified. Little is known about the toxic loadings coming from wastewater-treatment facilities and stormwater runoff in the system. This study provides preliminary data on these sources and pathways throughout the basin. The...
Resource Type:: Presentation
Full Text:: highest numbers of detections were found in the Portland/Willamette area DDT Usually find degradate, DDE

Groundwater Storage and Flow in an Unconfined Pumice Aquifer, Antelope Unit, Chemult Ranger District, Winema-Fremont National Forest, Oregon

Creator:: Cummings, Michael
Abstract:: The study area lies north-northeast of Crater Lake National Park and is covered by 2 to 3 m of pumice deposited during the climactic eruption of Mount Mazama approximately 7700 years before present. The pumice deposit hosts unconfined, seasonally connected, perched aquifers that support groundwater dependent ecosystems at points of...
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Full Text:: National Forest, Oregon Michael L. Cummings Department of Geology Portland State University Outline

Willamette Basin Water Futures: County Partnerships with Scientists’ Cutting-Edge Models

Creator:: Stebbins, Adam
Abstract:: The elected County Commissioner-led Benton-Lane-Linn Water Resources Study Group evolved in early 2009 to help counties, their partners, and area residents understand, pursue projects and offer recommendations to governing bodies concerning the region’s water quality and quantity. The Study Group is building on 2009-2010 successes including community engagement to support...
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Full Text:: Industries, Oregon Business Association, Oregon Business Council, and the Portland Business Alliance all came

Hydrologic Response to Climate Change in the Sprague River Basin, Oregon

Creator:: Risley, John, Hay, Lauren E., and Markstrom, Steven L.
Abstract:: In 2008 the U.S. Geological Survey began a Global Change study that evaluated the watershed scale response to climate change in selected basins across the United States. Fourteen basins for which the Precipitation Runoff Modeling System (PRMS) had been calibrated and evaluated were selected as study sites. PRMS is a...
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Full Text:: Estimating Recharge in the Willamette River Basin, Oregon

Emerging and Legacy Contaminants in POCIS, SPMDs, and the Largescale Sucker (Catostomus macrocheilus) in the Lower Columbia River – USGS ConHab Project

Creator:: Nilsen, Elena B., Alvarez, David, Madsen, James, Zaugg, Steven D., Perkins, Stephanie, Cranor, Walter, and Morace, Jennifer
Abstract:: An interdisciplinary study, USGS Columbia River Contaminants and Habitat Characterization (ConHab) project, is underway to investigate transport pathways, chemical fate and effects of polybrominated diphenyl ethers (PBDEs) and endocrine disrupting chemicals (EDCs) in aquatic media and the foodweb in the lower Columbia River. Polar organic chemical integrative samplers (POCIS) and...
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Full Text:: Wearhouse NOAA 7 Area Map WASHINGTON OREGON PA C IF IC O C E A N Columbia R

Continuous Hydrologic Simulation of Johnson Creek Basin

Creator:: Shimota, Richard J. and Hadley, Hans R.
Abstract:: Peak discharge estimates are fundamental in the design of hydraulic structures, embankment protection, and stream restoration efforts, as well as flood risk analysis. Historic stream gage records are commonly used in the development of peak discharge estimates for a particular watershed. Use of an entire stream gage record assumes hydrologic...
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Full Text:: ., P.G. The Oregon Water Conference 2011 Corvallis, OR 1 Engineering Hydrology Often a minor project

Emerging and Legacy Contaminants in POCIS, SPMDs, and the Largescale Sucker (Catostomus macrocheilus) in the Lower Columbia River – USGS ConHab Project

Creator:: Nilsen, Elena B., Alvarez, David, Madsen, James, Zaugg, Steven D., Perkins, Stephanie, Cranor, Walter, and Morace, Jennifer
Abstract:: An interdisciplinary study, USGS Columbia River Contaminants and Habitat Characterization (ConHab) project, is underway to investigate transport pathways, chemical fate and effects of polybrominated diphenyl ethers (PBDEs) and endocrine disrupting chemicals (EDCs) in aquatic media and the foodweb in the lower Columbia River. Polar organic chemical integrative samplers (POCIS) and...
Resource Type:: Presentation
Full Text:: Chemical & Engineering News Organic Baby Wearhouse NOAA 8 Area Map WASHINGTON OREGON PA C IF

The Oregon Water Conference 2011: evaluating and managing water resources in a climate of uncertainty

Creator:: Campana, Michael E., Ruff, James, Steinblums, Ivars, Chang, Heejun, Gannett, Marshall W., Laenen, Antonius, Lea, Jolyne, and Turner, Rudd
Abstract:: Program book for The Oregon Water Conference held May 24-25, 2011, Corvallis, OR.
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Full Text:: )‐‐ Spatial and Temporal Patterns in the Influence of Land Use on Water Quality in Five Portland Area

A Greenhouse Gas Inventory of a Conventional Water Treatment Plant

Creator:: Fesler, Kristel and Hoell, Kelly
Abstract:: The Joint Water Commission (JWC) in Forest Grove, Oregon completed a greenhouse gas (GHG) inventory of all the direct and indirect emissions associated with the daily operations of its 75 MGD conventional water treatment plant. Currently, very few water and wastewater facilities have completed a greenhouse gas inventory to date....
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Full Text:: Inventory Kristel Fesler City of Hillsboro, Water Resources Technician The Oregon Water Conference Oregon

Relating Surface-Water Nutrients in the Pacific Northwest To Watershed Attributes Using the USGS SPARROW Model

Creator:: Wise, Daniel and Johnson, Hank
Abstract:: The USGS SPARROW model (SPAtially Referenced Regression On Watershed attributes) was used to predict the long-term, average loads, yields, and concentrations of total nitrogen and total phosphorus for stream reaches located in the Pacific Northwest (the Columbia basin, Puget Sound basin, and Pacific drainages of Oregon and Washington), and to...
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Full Text:: Description The fundamental component of the SPARROW model is the stream reach and its associated incremental

Assessment of Climate Change Impacts over the Willamette River Basin Using NARCCAP Dynamically Downscaled Datasets

Creator:: Halmstad, Andrew, Najafi, Mohammad Reza, and Moradkhani, Hamid
Abstract:: One important aspect related to the management of water resources under future climate variation is the occurrence of extreme precipitation events. In order to prepare for extreme events, namely floods and droughts, it is important to understand how future climate variability will influence the occurrence of such events. Recent advancements...
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Full Text:: study region, within the state of Oregon Assessment of Climate Change Impacts over Oregon’s Willamette

Incorporating Climate Signals for Improved Ensemble Streamflow Prediction

Creator:: Najafi, Mohammad Reza and Moradkhani, Hamid
Abstract:: Ensemble Streamflow Prediction (ESP) provides the means for statistical post-processing of the forecasts and estimating the inherent uncertainties. On the other hand large scale climate variables provide valuable information for hydrologic predictions. In this study we propose a post-processing procedure that assigns weights to streamflow ensemble members using these large...
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Full Text:: . The Leaf river basin is a rainfall dominated basin with an area of 1944km2, which is located in the

Climate Change and Oregon’s Water Future

Creator:: Campana, Michael E.
Abstract:: The specter of climate change looms large over Oregon. Although hydroclimatologic models predict a warmer Oregon, the total volume of precipitation may not change significantly. However, the character (rain vs. snow) and spatial and temporal distributions of precipitation will likely change. The state is already witnessing earlier snowmelt in the...
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Full Text:: Future The Oregon Water Conference 2011 Evaluating and Managing Water Resources in a Climate of

Oregon’s Integrated Water Resources Strategy (IWRS)

Creator:: Bateman, Brenda O., McIntosh, Bruce, Paige, Stephanie, Foster, Eugene, and Mucken, Alyssa
Abstract:: During 2009, the 75th Legislative Assembly passed House Bill 3369, directing the Oregon Water Resources Department to develop a state-wide, Integrated Water Resources Strategy (IWRS) to help Oregon meet its future water quantity, water quality, and ecosystem needs, while taking into account coming pressures such as population growth, changing land...
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Full Text:: , Oregon Department of Environmental Quality Stephanie Page, Oregon Department of Agriculture The Oregon

Water Quality Data Synthesis in the Metolius River Basin, Oregon

Creator:: Lee, Baek Soo and Jarvis, W. Todd
Abstract:: The Metolius River basin is a sub-basin of the Deschutes Basin within central Oregon. Considered one of the crown jewels of the state, this historically undisturbed basin drew attention in 2009 because the Oregon legislature designated the basin as the first Area of Critical State Concern (ACSC) under the state’s...
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Full Text:: at one location Water quality analyses 3 Background Crown jewel of Oregon First Area of Critical

Using Partnership and Prioritization to Achieve Whole Watershed Restoration in the Pacific Northwest

Creator:: Senkyr, Lauren and Grant, Megan Callahan
Abstract:: The goal of the Whole Watershed Restoration Initiative (WWRI) is to restore natural functions of whole watersheds in Oregon, Washington, and Idaho, while amplifying community-based partnerships focused on the strategic restoration of Pacific salmon and steelhead ecosystems. The WWRI partners (Ecotrust, NOAA Restoration Center, the U.S. Forest Service's Pacific Northwest...
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Full Text:: Service’s Aquatic Restoration Strategies Figure 1. Map of the WWRI’s Priority Basins and Focus Watersheds

What Will Oregon’s Future Streamflow Regimes Look Like? Integrating Snowpack and Groundwater Dynamics

Creator:: Grant, Gordon E., Tague, Christina, Safeeq, Mohammad, and Lewis, Sarah
Abstract:: Spatial patterns of summer streamflow in the Cascade Mountains of Oregon vary dramatically between the geologically distinct High and Western Cascade regions. A key control is the partitioning of water input between a fast-draining shallow subsurface flow network (Western Cascades) versus a slow-draining deeper groundwater system (High Cascades). These differences...
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Full Text:: Northwest study area Red = rain instead of snow in the winter * In Oregon, mid-elevation snowpacks are at

Source Water Protection in a Climate of Change: Perspectives from a Publicly-Owned Utility

Creator:: Morgenstern, Karl and Rubin, Jared G.
Abstract:: The McKenzie River serves as the sole source of drinking water for nearly 200,000 residents in Eugene, OR. The McKenzie River is also home to a number of threatened and endangered fish species. Whereas the majority of the upper watershed is forested, areas of rural development and agriculture occur along...
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Full Text:: . Rubin Eugene Water & Electric Board 1 Overview of Presentation Importance of the McKenzie River

A Novel Physically-Based Framework for the Intelligent Control of River Flooding

Creator:: Leon, Arturo S. and Gichamo, Tseganeh Z.
Abstract:: River flooding is a recurrent threat and its control and management continues to be a challenge. It has been recognized that effective flooding control requires a real-time strategy that combines optimization with a physically-based simulation model. Current real-time frameworks that combine simulation and optimization have two main drawbacks. The first...
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Full Text:: Kanashiro (BSU) Dr. Juan Gonzales-Castro 2 2 Let me present you the outline of my talk First I am going to

Integrating Climate Adaptation Planning and Watershed Assessments to Improve Community-Engaged Watershed Management: A Case Study from the Klamath Basin, Oregon

Creator:: Rosenthal, Ethan, Vynne, Stacy, Bierly, Ken, Fisk, Terry, Addington, Greg, and Jackson, Nathan
Abstract:: The Klamath Basin is rich in history, culture, and biological diversity. Upper Klamath Lake is fed primarily by the Williamson and Sprague rivers. Below the lake’s outlet, the Klamath River begins a 263 mile journey, cutting through both the Cascade and Coast mountain ranges to the Pacific Ocean. The Basin...
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Full Text:: the present marsh area.” -Description of Upper Klamath Marsh circa 1930 Upper Williamson, field

A Collaborative Effort to Evaluate Water Resources in the Lower Siuslaw Watershed

Creator:: Moellendorf, Suzanne, Miller, Mike, Nelson, Dennis, and Livesay, Dave
Abstract:: The City of Florence, local stakeholders, and partner agencies recently formed the Siuslaw Estuary Partnership (SEP) to address threats to drinking water quality and fish and wildlife habitat in the lower Siuslaw watershed. The Sole Source Dunal Aquifer within the lower Siuslaw watershed, which supplies the City ’s drinking water,...
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Full Text:: least fifty percent (50%) of the drinking water consumed in the area overlying the aquifer. These areas

Surface Water Interaction with “Confined” Columbia River Basalt Aquifers – Impacts to Streams from Declining Groundwater Levels near Mosier, Oregon

Creator:: Lite Jr., Kenneth E.
Abstract:: Columbia River Basalt Group (CRBG) aquifers are commonly thought to be relatively flat lying, laterally extensive, and mostly confined, and therefore not likely to be directly connected to surface water. However, many of the CRBG units in south-central Washington and north-central Oregon were deposited within evolving synclinal structures of the...
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Full Text:: Kenneth E. Lite Jr. Oregon Water Resources Department Purpose Provide an overview of the ground-water

Assessment of Climate Change Impacts on Drought Return Periods Using Copula Functions

Creator:: Madadgar, Shahrbanou
Abstract:: Drought events are usually characterized by their duration, severity, and intensity which are calculated based on different indices for drought recognition. Streamflow Drought Index (SDI) used in hydrological droughts is applied in this study to calculate drought variables of historical events in Upper Klamath River basin in Oregon. Historical extreme...
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Full Text:: Copula Shahrbanou Madadgar, PhD Student Hamid Moradkhani, Associate Professor, P.E., D.WRE The Oregon

The Orange County Water District Riverbed Filtration Pilot Project: Solids and Organic Carbon Removal Using Induced Riverbed Infiltration

Creator:: Keller, Jason, Milczarek, Michael, Woodside, Greg, Hutchinson, Adam, and Rice, Robert
Abstract:: In an effort to reduce suspended solids and organic carbon loading and to increase long-term groundwater recharge rates at Orange County Water District’s spreading basins, a pilot project was conducted to evaluate riverbed filtration as a technology to treat river water prior to groundwater recharge. A shallow under-channel lateral drain...
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Full Text:: Unsaturated zone and strong south-to-north gradient reduced system efficiency Drainfield east of the

Quantitative Relationship between Resazurin and Respiration in Stream Ecosystems

Creator:: Gonzalez-Pinzon, Ricardo, Haggerty, Roy, Argerich, Alba, Acker, Sarah, and Myrold, David
Abstract:: After three decades of active research in hydrology and stream ecology, the connection between solute transport, stream metabolism and nutrient dynamics is still unresolved. This existing gap obscures the functionality of stream ecosystems and how they interact with other landscape processes. To date, determining rates of metabolism is accomplished with...
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Full Text:: gaps obscure the functionality of stream ecosystems and how they interact with other landscape

Processing of Sediment Pulses Following the Removal of Three Small, Gravel-Filled Barriers

Creator:: Tullos, Desiree, Cox, Matt, Walter, Cara, Kibler, Kelly, and Woloveke, Greg
Abstract:: The decommissioning of dams, as an approach to restoring longitudinal connectivity and to managing aging infrastructure, presents valuable opportunities for organized study of channel responses to sediment pulses. Experiments with physical and numerical models suggest that rivers process coarse sediment pulses primarily through dispersion. In contrast, translation appears to be...
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Full Text:: evidence that the area of maximum erosion is moving upstream during the second survey. In the downstream

Development of a Numerical Model for the Walla Walla Basin using IWFM (Groundwater-surface water modeling of the Walla Walla Basin Using IWFM)

Creator:: Scherberg, Jacob, Petrides-Jimenez, Aristides, Selker, John, Baker, Troy, and Henry, Rick
Abstract:: The Walla Walla basin lies in an arid region on the border of Eastern Washington and Oregon. A large portion of the area is devoted to agricultural production, relying on irrigation water diverted from the Walla Walla River and underlying aquifers occurring within Quaternary gravel and Mio-pliocene basalt formations. Heavy...
Resource Type:: Presentation

Climate Change Impact on Drought Risk and Uncertainty in the Willamette River Basin

Creator:: Jung, Il-Won and Chang, Heejun
Abstract:: Climate change due to global warming could induce more frequent droughts in the Willamette River Basin because less snowfall in winter and earlier snowmelt due to temperature increase may lead to decreases in spring and summer streamflow. This study examines possible changes in drought risk using two drought indices, Standardized...
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Full Text:: uncertainty in the Willamette River basin Dept. of Geography, Portland State University, Portland, OR Il-Won

Integrated Water-Quality Assessment using Conventional, Passive-Sampling, and Metabolic Assay Techniques: Approaching System-Level Understanding of Risk

Creator:: Kelly, Valerie and McCarthy, Kathleen
Abstract:: Conventional monitoring to assess water quality of drinking water sources in streams and rivers is typically focused on identifying primary sources and conditions that are associated with mobilization of contaminants. This approach is often organized as a series of discrete samples collected in such a way as to capture the...
Resource Type:: Presentation
Full Text:: Water Science Center, Portland OR U.S. Department of the Interior U.S. Geological Survey Drinking

Managing Ecological Water Requirements for Groundwater-dependent Wetlands on National Forests: A View from the Bottom Up and the Top Down

Creator:: Carroll, Trish, Nevill, Mike, Aldous, Allison, Bach, Leslie, and Gurrieri, Joe
Abstract:: Presented at The Oregon Water Conference, May 24-25, 2011, Corvallis, OR.
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Full Text:: Management of groundwater dependent ecosystems in the Antelope project area Overview of the Forest Service

Effects of Climate Change on Water Quality in the Yaquina Estuary, Oregon

Creator:: Brown, Cheryl A., Sharp, Darrin, Chang, Heejun, and Steele, Madeline
Abstract:: As part of a larger study to examine the effect of climate change (CC) on estuarine resources, we simulated the effect of rising sea level, alterations in river discharge, and increasing atmospheric temperatures on water quality in the Yaquina Estuary. Due to uncertainty in the effects of climate change, initial...
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Full Text:: Water Quality in the Yaquina Estuary, Oregon Cheryl A. Brown1, Darrin Sharp2, Heejun Chang3

Sensitivity of Oregon Watersheds to Streamflow Changes Due to Climate Warming: A Geohydrological Approach

Creator:: Safeeq, M., Grant, G., and Tague, C.
Abstract:: A key challenge for resource and landscape managers is to predict the consequences of climate warming on streamflows and water resources. Different approaches are being developed to forecast the direction, magnitude, and timing of future streamflow changes in specific landscapes. One approach that is being utilized in the Pacific Northwest...
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Full Text:: Department of Geosciences, Oregon State University Cristina Tague Bren School, University of California

Wolf Creek Monitoring

Creator:: Dammann, Daniel
Abstract:: The Wolf Creek Restoration and Monitoring project is a large-scale restoration project that treated over 10 miles of stream with 900 logs and 3700 boulders over a two year period. Wolf Creek is a tributary to the Umpqua River west of Roseburg, Oregon. This presentation, designed for those involved in...
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Full Text:: . Little Wolf Creek at the southern end of the watershed is our intensive monitoring area, while the rest

Hydrologic Monitoring and Trends in the Upper Klamath Basin over the Last Decade

Creator:: La Marche, Jonathan L., Gates, Edward B., and Lite Jr., Kenneth E.
Abstract:: Over the last decade hydrologic monitoring efforts in the Upper Klamath Basin (UKB) of Oregon have increased in response to the continued strain on surface water and groundwater to meet competing biological and agricultural demands. The Oregon Water Resources Department (OWRD) increased its stream gaging network from three to ten...
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Full Text:: ) has been the focus of on–going conflict between competing uses of surface water for over a decade

Exempt Wells in the Courts, Agencies and Legislatures

Creator:: Richardson, Jesse J. Jr.
Abstract:: “Exempt wells” are water wells that are exempt from one or more permit or other requirements in seventeen western states. Important policy considerations underlie the exemption, and only Utah does not exempt any water uses. However, some have expressed concerns about exempt water wells and the impact of the exemptions...
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Full Text:: within the area. ORS § 537.775. Quantity limitations: Alaska, Arizona, Nevada, New Mexico, Oregon

Economic Implications of Climate Change on Ecosystem Restoration Projects With a Beaver Case Study

Creator:: Buckley, Mark
Abstract:: Presented at The Oregon Water Conference, May 24-25, 2011, Corvallis, OR.
Resource Type:: Presentation
Full Text:: project a greater increase. Models showing greater increase expand the size of the darkest area. The

Seasonal and Elevational Variation of Surface Water δ¹⁸O and δ²H in the Willamette River Basin

Creator:: Brooks, J. Renee, Wigington, Parker J. Jr, Kendall, Carol, Coulombe, Rob, Comeleo, Randy, and Rodecap, Kent
Abstract:: Climate change is expected to dramatically alter the timing and quantity of water within the nation’s river systems. These changes are driven by variation in the form, location and amount of precipitation that will affect the temporal and spatial distribution of river source water over time. To manage the impact...
Resource Type:: Presentation
Full Text:: small watershed streams within the Willamette Valley. Determine the major drivers of variation. Use the

A Hydroecology Investigation of Two Incised Riparian Wet Meadows Relating Change in Vegetation Communities with Headcut Incision and Soil Properties, Ochoco Mountains, OR

Creator:: Sheahan, Jamie
Abstract:: The inter-relationships of vegetation, soils, and stream channel erosion characteristics were examined in two riparian meadows of the Ochoco National Forest where progressive stream headcut incision is a critical resource management issue and restoration priority. Scientific literature establishes that headcut incision leads to lower groundwater tables, with corresponding shifts in...
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Full Text:: incised meadows of the Ochoco National Forest, Oregon. By: Jamie Sheahan, Central Washington University

Assessing Streamflow Response to Climate Change: Why Geology Matters

Creator:: Mayer, Tim
Abstract:: Climate change will continue to profoundly affect water supply and aquatic ecosystems in the Pacific Northwest. Changes such as warmer air temperatures, increases in the proportion of winter rain versus snow, reduced spring snowpack, and earlier snowmelt all affect streamflow. The response to these climate impacts includes earlier runoff peaks,...
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Full Text:: Matters Tim Mayer, US Fish and Wildlife Service Presented at the Oregon Water Conference Corvallis, OR

A Decision Support System for Optimizing Reservoir Operations Using Ensemble Streamflow Forecasts (ESP)

Creator:: Alemu, Eset T., Palmer, Richard N., Polebitski, Austin, and Meeker, Bruce
Abstract:: The presentation discusses the economic value of Ensemble Streamflow Predictions (ESP) streamflow and energy price forecasts in the operation of the Jackson Hydropower Project in western Washington. A decision support system (DSS) was constructed for this multipurpose reservoir system for the evaluation of operational alternatives and improvement of operational procedures....
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Full Text:: configuration and operational aspects of a of the Jackson Hydropower Project System wide management tool used

Climate Warming, Soil Moisture Dynamics, and Water Budget Partitioning: Experimental Results from a Willamette Valley Ecosystem

Creator:: Pangle, Luke, Gregg, Jillian, and McDonnell, Jeffrey
Abstract:: There is reasonable expectation that climate warming will accelerate the hydrologic cycle, resulting in greater evapotranspiration (ET) and reduced groundwater recharge (R) (or stream flow). Though qualitatively intuitive, quantifying these potential shifts in water budget partitioning is a contemporary challenge in hydrology, because the linkage between ET and R is...
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Full Text:: www.teraglobalchange.org How will projected climate warming in the next century alter the annual partitioning of

Using local citation data to develop a locally relevant water resources information guide

Creator:: Wirth, Andrea A. and Mellinger, Margaret
Abstract:: Poster presented at The Oregon Water Conference, Corvallis, OR, May 24th-25th, 2011.
Resource Type:: Poster
Full Text:: Margaret Mellinger, Engineering Librarian The Oregon Water Conference 2011 INTRODUCTION Citation

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