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This study investigates the hydrologic effects of urbanization in two Portland, Oregon streams through a comparison of three hydrologic metrics. Hydrologic metrics used in this study are the mean annual ...
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2. [Article] Atlases for Select Portland Metropolitan Watersheds
The primary purpose of this project is to promote planning on a watershed basis in the Portland Metropolitan area. We intend to support Metro's Regional Planning Framework process by encouraging a stewardship ...Citation -
The Oregon Coastal Salmon Restoration Initiative (OCSRI) (1197) is the first of several documents that have come to be known as the Oregon Plan for Salmon and watersheds (OPSW). The OCSRI indicates that ...
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4. [Article] A Land Use Network for the Johnson Creek Watershed
This document presents a design for a Land Use Network. It is a starting point from which to build a network that connects, educates, and motivates stakeholders within the Johnson Creek Watershed to facilitate ...Citation -
In July 2002, the National Policy Consensus Center (NPCC) hosted a colloquium for people involved in watershed collaborations, academics, and other experts from government and non-profit organizations. ...
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The Johnson Creek watershed, Portland, Oregon, has undergone urbanization at an increasing rate. Excessive flooding has occurred in the lower portions of the watershed, resulting in an estimated 1.5 million ...
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Linking the type and timing of hydrologic changes with patterns of urban growth is essential to identifying the underlying mechanisms that drive declines in urban aquatic ecosystems. In six urbanizing ...
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8. [Article] Northwest Forest Plan The First 15 Years (1994-2008): Watershed Condition Status and Trend
We used two data sets to evaluate stream and watershed condition for sixth-field watersheds in each aquatic province within the Northwest Forest Plan (NWFP) area: stream data and upslope data. The stream ...Citation -
9. [Article] Northwest Forest Plan The First 20 Years (1994-2013): Watershed Condition Status and Trend
We used two data sets to evaluate stream and upslope/riparian condition for sixth-field watersheds in each aquatic province within the Northwest Forest Plan (NWFP) area. The stream evaluation was based ...Citation -
10. [Article] Watershed Management and Private Lands: Moving Beyond Financial Incentives to Encourage Land Stewardship
Public water utilities are tasked with providing high quality, inexpensive water often sourced from watersheds representing a diverse mix of public and private land ownership. There is increasing recognition ...Citation -
11. [Article] Aboriginal Fisheries of the Lower Columbia River
This chapter, included in Chinookan Peoples of the Lower Columbia, published by the University of Washington Press in 2013, explores the aboriginal fisheries of the Lower Columbia River. The authors reviewed ...Citation -
12. [Article] Focus on a STEM, Based in Place, Watershed Curriculum: A confluence of stormwater, humans, knowledge, attitudes, and skills
This case study investigated the potential of a place-based watershed curriculum, using STEM principles, to increase watershed literacy and knowledge of human impacts on stormwater in the environment. ...Citation -
Urbanization and its Relationship to Water Quality within the Bronson Creek Watershed A watershed analysis project was undertaken to investigate the impact of urbanization on the water quality with Bronson ...
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It is important that students understand not only how their local watershed functions, but also how it is being impacted by impervious surfaces. Additionally, students need experience exploring the scientific ...
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There is an increasing demand for assessing ecosystem functions for freshwater wetlands, especially when comparing or prioritizing among wetlands at the watershed scale. We estimated the relative potential ...
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16. [Article] Using Spatially Explicit Indicators to Investigate Watershed Characteristics and stream temperature relationships
We generate a series of novel indicators of spatially explicit watershed permeability and runoff characteristics to examine the relationship between land cover and water temperature parameters in a rapidly ...Citation -
17. [Article] Historical Vegetation of Three Salmon-Bearing Watersheds in the Interior Columbia River Basin
Land use practices can be a contributing factor to environmental degradation and have been the focus of many ecological studies. One aspect that is less addressed is land use history and the effects that ...Citation -
Occasional Papers in Geography Publication No. 6 This guide begins at the summit of Mount Rainier and, like a drop of water, descends toward the sea. It provides information about geological, hydrological, ...
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19. [Article] The Community Watershed Stewardship Program: Experiments in Engagement and Equity in Portland, OR
The Community Watershed Stewardship Program (CWSP) is a long-running city–university partnership between the City of Portland's Bureau of Environmental Services and Portland State University, with the ...Citation -
Natural lake-watershed ecosystems in Oregon compose a diverse and valuable assemblage of land and water resources. With an increasing demand on lakes for recreation, water supplies, and aesthetic values ...
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21. [Article] Potential Economic Impacts of Zebra Mussels on the Hydropower Facilities in the Columbia River Basin
The purpose of this study was to estimate costs to the Federal Columbia River Power System hydroelectric projects in the event of a zebra mussel infestation.Citation -
22. [Article] Map-based Probabilistic Infinite Slope Analysis of the Stephens Creek Watershed, Portland, Oregon
The Stephens Creek Watershed in southwest Portland, Oregon was chosen by the city as a pilot project for urban stream restoration efforts, and the infiltration of stormwater was identified as a potential ...Citation -
This study investigates the relationship between channel complexity and nutrient spiraling along 31 reaches of an urbanized watershed in Portland, Oregon. Much research shows that urbanization has an effect ...
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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 ...
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The purpose of this study was to examine the characteristics of riparian plant communities along a succession gradient of livestock exclusion in the Lower Columbia River Basin (LCRB). Livestock exclusion ...
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26. [Article] Riparian Vegetation Assemblages and Associated Landscape Factors Across an Urbanizing Metropolitan Area
While diverse, native riparian vegetation provides important functions, it remains unclear to what extent these assemblages can persist in urban areas, and under what conditions. We characterized forested ...Citation -
27. [Article] The Bull Run River–Reservoir System Model
The Bull Run watershed is located 41.8 kilometers east of Portland, Oregon in the Mt. Hood National Forest and consists of two reservoirs supplying drinking water to over 840,000 people in the Portland ...Citation -
28. [Article] Urban and Rural-residential Land Uses: Their Role in Watershed Health and the Rehabilitation of Oregon’s Wild Salmonids
This technical report by the Independent Multidisciplinary Science Team (IMST) is a comprehensive review of how human activities in urban and rural-residential areas can alter aquatic ecosystems and resulting ...Citation -
29. [Article] Factors of Successful Collaboration: Oregon's Watershed Councils as Collaborative Systems
The public sector, business professionals and organization leaders are among some of the diverse entities increasingly viewing collaboration as a useful, and at times necessary, practice. Collaborative ...Citation -
Water supply forecasting in the western United States is the prediction of the volume of water passing a given point on a stream during the primary snowmelt runoff season. Most water supply forecasts are ...
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31. [Article] Emerging Pollutants in the Columbia River: A Simple Assessment of Nonpoint Source Zones
Water quality modeling in the Columbia River Basin was conducted at the confluence of the Willamette and Columbia Rivers, river mile 101. The study area for this research consists of Sauvie Island, OR, ...Citation -
32. [Article] An Assessment of the Impacts of Climate Change on the Upper Clackamas River Basin with a Distributed Hydrologic Model
The Pacific Northwest is dependent on seasonal snowmelt for water resources that support a significant portion of its economy. Increased temperatures resulting from higher concentrations of atmospheric ...Citation -
33. [Article] Statistical Comparisons of Watershed-Scale Response to Climate Change in Selected Basins across the United States
In an earlier global climate-change study, air temperature and precipitation data for the entire twenty-first century simulated from five general circulation models were used as input to precalibrated ...Citation -
34. [Article] Environmental Controls on the Landscape-Scale Biogeography of Stream Bacterial Communities
We determined the biogeographical distributions of stream bacteria and the biogeochemical factors that best explained heterogeneity for 23 locations within the Hubbard Brook watershed, a 3000-ha forested ...Citation -
35. [Article] State of the River Report for Toxics
The United States Environmental Protection Agency (EPA) strives to prevent pollution, protect water quality and improve ecosystems in order to reduce risks to human health and the environment. As outlined ...Citation -
Sustainable watershed management (SWM) can be achieved through recognition and reflection upon the values of citizens. Collaborative governance consisting of citizens is crucial for successful SWM. Collaborative ...
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37. [Article] Structuring expert input for a knowledge-based approach to watershed condition assessment for the Northwest Forest Plan, USA
Assessments of watershed condition for aquatic and riparian species often have to rely on expert opinion because of the complexity of establishing statistical relationships among the many factors involved. ...Citation -
38. [Article] Streamflow Modeling of Johnson Creek Subwatersheds Using the Precipitation Runoff Modeling System
Johnson Creek, in the Portland, Oregon metropolitan region, has several pollutants on the U.S. Environmental Protection Agency’s (EPA) 303(d) list including excess heat, low dissolved oxygen, and harmful ...Citation -
Detailed analysis of the physical, chemical, pollen and diatom stratigraphy of sediment cores from Bull Run Lake, Oregon reveals that the lake has been subject to repeated episodes of disruption by volcanic ...
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40. [Article] Biostratigraphy of the Cowlitz Formation in the upper Nehalem River Basin, northwest Oregon
Examination of stream and roadcut exposures of the Cowlitz Formation allows the selection of measured representative sections, and collection of fossils, from an area roughly defined by the intersection ...Citation -
Over 115 miles of rock revetment have been constructed in the Willamette Basin to protect river banks. This study examines the effect on riparian mammals of maintaining these revetments by vegetation and ...
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42. [Article] Getting Salmon Back in Salmon Creek: Systematizing Comparative Water Quality Analysis for Targeted Restoration
This presentation focuses on water quality restoration efforts in Salmon CreekCitation -
The project investigated and analyzed potential program mechanisms, receiving sites and funding opportunities for off-site mitigation. River Plan staff will use feedback received from the River Plan Committee ...
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Logging and associated skid trails, haul routes, and roads can have significant impacts on the magnitude and timing of sediments in streams in forested watersheds. Loss of vegetation, soil compaction, ...
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45. [Article] Oxygen Demand Trends, Land Cover Change, and Water Quality Management for an Urbanizing Oregon Watershed
In-stream aquatic habitat depends on adequate levels of dissolved oxygen. Human alteration of the landscape has an extensive influence on the biogeochemical processes that drive oxygen cycling in streams. ...Citation -
The town of Mosier, Oregon, is located near the east, dry end of the Columbia River Gorge, and the local area is known for cherry orchards that rely heavily on groundwater for irrigation. The CRBG groundwater ...
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47. [Article] Watershed Response to Climate Change and Fire-Burns in the Upper Umatilla River Basin, USA
This study analyzed watershed response to climate change and forest fire impacts in the upper Umatilla River Basin (URB), Oregon, using the precipitation runoff modeling system. Ten global climate models ...Citation -
I hypothesized that vegetation and physical environmental characteristics would differ between the upper and lower extents of the annually flooded riparian zone on the John Day River, and that relationships ...
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This study provides an analysis of watershed response to climate change and forest fire impacts, to better understand the hydrologic budget and inform water management decisions for present and future ...
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The object of current efforts at investigating catchment response is to derive a physically based stochastic model of the watershed. Recent studies have, however, indicated that a limiting factor in deriving ...
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