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• 51. [Article] A systems classification of watersheds and streams

  Adequate management and scientific investigation of ecosystems depends on classification of landscape systems based on all significant bio-physical and associated cultural properties. The present classification ...

  Citation × Citation Citation Abstract Copy Title: A systems classification of watersheds and streams Author: McCullough, Dale A. Adequate management and scientific investigation of ecosystems depends on classification of landscape systems based on all significant bio-physical and associated cultural properties. The present classification is a hierarchical systems design that can be modeled in terms of a natural system interacting with its level-specific environment. A watershed system in this context is embedded in a landscape environment organized into, for example, zonal and regional systems. A system at any level is classified by its capacity and the capacity of its environment, capacity defining temporally the scope of possible system performances relative to the components, substrate, climate, biota, culture, and water. This theoretical framework for examining systems was translated into methods suitable for integrating the full capacities of watersheds and for displaying the discrete and continuous nature of watershed and stream system similarities. Classification of land to a sub-zonal level with a full capacity description coupled with analysis of watershed substrate variables provided an adequate representation of watershed capacity. This was demonstrated by empirical correlations of system, components described in the literature, and by the ability to predict soil properties from topographic characteristics of land facets that are formed on a grid system overlaid on the watershed. Watershed classes were shown to be a good surrogate for differentiation of stream classes. Watersheds were analyzed by facet on a grid system according to several substrate variables. Slope, aspect, altitude, radiation intensity on the winter solstice and equinox, and soil series occurrence by facet effectively sorted watershed and stream classes. These same classes were also revealed by a more extensive set of variables describing the statistical distribution of these primary variables and some variables describing topographic roughness, form, and drainage development. Spatial organization of the basin is a significant factor determining solar radiation distribution on slope facets and in segments of the drainage network. A gravity model of spatial organization of soils is potentially a useful model for stream reach performances, considering the reach environment as the upstream segment, network, and watershed system. Title: A systems classification of watersheds and streams Author: McCullough, Dale A. Adequate management and scientific investigation of ecosystems depends on classification of landscape systems based on all significant bio-physical and associated cultural properties. The present classification is a hierarchical systems design that can be modeled in terms of a natural system interacting with its level-specific environment. A watershed system in this context is embedded in a landscape environment organized into, for example, zonal and regional systems. A system at any level is classified by its capacity and the capacity of its environment, capacity defining temporally the scope of possible system performances relative to the components, substrate, climate, biota, culture, and water. This theoretical framework for examining systems was translated into methods suitable for integrating the full capacities of watersheds and for displaying the discrete and continuous nature of watershed and stream system similarities. Classification of land to a sub-zonal level with a full capacity description coupled with analysis of watershed substrate variables provided an adequate representation of watershed capacity. This was demonstrated by empirical correlations of system, components described in the literature, and by the ability to predict soil properties from topographic characteristics of land facets that are formed on a grid system overlaid on the watershed. Watershed classes were shown to be a good surrogate for differentiation of stream classes. Watersheds were analyzed by facet on a grid system according to several substrate variables. Slope, aspect, altitude, radiation intensity on the winter solstice and equinox, and soil series occurrence by facet effectively sorted watershed and stream classes. These same classes were also revealed by a more extensive set of variables describing the statistical distribution of these primary variables and some variables describing topographic roughness, form, and drainage development. Spatial organization of the basin is a significant factor determining solar radiation distribution on slope facets and in segments of the drainage network. A gravity model of spatial organization of soils is potentially a useful model for stream reach performances, considering the reach environment as the upstream segment, network, and watershed system. Close

• 52. [Article] Silver Creek subbasin watershed assessment

  Citation × Citation Citation Abstract Copy Title: Silver Creek subbasin watershed assessment Author: Street, Pamela, Harney County Watershed Council Title: Silver Creek subbasin watershed assessment Author: Street, Pamela, Harney County Watershed Council Close

• 53. [Article] Deer Creek Watershed assessment and action plan

  The Deer Creek Watershed Assessment process has been followed by a group of local landowners. The organization of this document was constructed as a combination of the informational needs of the Deer Creek ...

  Citation × Citation Citation Abstract Copy Title: Deer Creek Watershed assessment and action plan Author: Kincaid, Heidi The Deer Creek Watershed Assessment process has been followed by a group of local landowners. The organization of this document was constructed as a combination of the informational needs of the Deer Creek landowners and the framework of the Oregon Watershed Assessment Manual. The group has met twelve times to review the data going into the document, followed by three meetings to review the assessment and develop the action plan. Members of the Deer Creek landowner group represented sheep ranches, cattle ranches, industry within Deer Creek, the City of Roseburg, private industrial timber companies, city residents, rural residents, the UBWC, the Bureau of Land Management (BLM), the Department of Environmental Quality (DEQ), the Douglas Soil and Water Conservation District (DSWCD), and the Douglas Small Woodlands Association. Title: Deer Creek Watershed assessment and action plan Author: Kincaid, Heidi The Deer Creek Watershed Assessment process has been followed by a group of local landowners. The organization of this document was constructed as a combination of the informational needs of the Deer Creek landowners and the framework of the Oregon Watershed Assessment Manual. The group has met twelve times to review the data going into the document, followed by three meetings to review the assessment and develop the action plan. Members of the Deer Creek landowner group represented sheep ranches, cattle ranches, industry within Deer Creek, the City of Roseburg, private industrial timber companies, city residents, rural residents, the UBWC, the Bureau of Land Management (BLM), the Department of Environmental Quality (DEQ), the Douglas Soil and Water Conservation District (DSWCD), and the Douglas Small Woodlands Association. Close

• 54. [Article] Restoration project photo from the Lower North Umpqua Watershed

  Photo was taken in the Lower North Umpqua Watershed

  Citation × Citation Citation Abstract Copy Title: Restoration project photo from the Lower North Umpqua Watershed Author: Partnership for the Umpqua Rivers Photo was taken in the Lower North Umpqua Watershed Title: Restoration project photo from the Lower North Umpqua Watershed Author: Partnership for the Umpqua Rivers Photo was taken in the Lower North Umpqua Watershed Close

• 55. [Article] Landscape photo from the Deer Creek area of the Lower South Umpqua watershed

  Photo was taken in the Deer Creek area of the Lower South Umpqua Watershed

  Citation × Citation Citation Abstract Copy Title: Landscape photo from the Deer Creek area of the Lower South Umpqua watershed Author: Partnership for the Umpqua Rivers Photo was taken in the Deer Creek area of the Lower South Umpqua Watershed Title: Landscape photo from the Deer Creek area of the Lower South Umpqua watershed Author: Partnership for the Umpqua Rivers Photo was taken in the Deer Creek area of the Lower South Umpqua Watershed Close

• 56. [Article] Silvies sub-basin assessment

  Citation × Citation Citation Abstract Copy Title: Silvies sub-basin assessment Author: Harney County Watershed Council, Maupin, Erin Title: Silvies sub-basin assessment Author: Harney County Watershed Council, Maupin, Erin Close

• 57. [Article] Alvord Lake sub-basin watershed assessment

  Citation × Citation Citation Abstract Copy Title: Alvord Lake sub-basin watershed assessment Author: Harney County Watershed Council Title: Alvord Lake sub-basin watershed assessment Author: Harney County Watershed Council Close

• 58. [Article] Scenic photo from Olalla Creek-Lookingglass Creek Watershed

  Photo was taken on the Olalla Creek-Lookingglass Creek Watershed

  Citation × Citation Citation Abstract Copy Title: Scenic photo from Olalla Creek-Lookingglass Creek Watershed Author: Partnership for the Umpqua Rivers Photo was taken on the Olalla Creek-Lookingglass Creek Watershed Title: Scenic photo from Olalla Creek-Lookingglass Creek Watershed Author: Partnership for the Umpqua Rivers Photo was taken on the Olalla Creek-Lookingglass Creek Watershed Close

• 59. [Article] Landscape photo from the Upper Cow Creek Watershed

  Photo was taken in the Upper Cow Creek Watershed

  Citation × Citation Citation Abstract Copy Title: Landscape photo from the Upper Cow Creek Watershed Author: Partnership for the Umpqua Rivers Photo was taken in the Upper Cow Creek Watershed Title: Landscape photo from the Upper Cow Creek Watershed Author: Partnership for the Umpqua Rivers Photo was taken in the Upper Cow Creek Watershed Close

• 60. [Article] Biennial report : Oregon plan for salmon and watersheds : 2003-2005 : Vol. 1

  The report summarizes basin level accomplishments and investments related to water quality improvements, fish recovery, and watershed health. The report also provides an overview of state agency actions and ...

  Citation × Citation Citation Abstract Copy Title: Biennial report : Oregon plan for salmon and watersheds : 2003-2005 : Vol. 1 Author: Oregon Plan for Salmon and Watersheds The report summarizes basin level accomplishments and investments related to water quality improvements, fish recovery, and watershed health. The report also provides an overview of state agency actions and recommendations to enhance the effectiveness of the Oregon Plan. Title: Biennial report : Oregon plan for salmon and watersheds : 2003-2005 : Vol. 1 Author: Oregon Plan for Salmon and Watersheds The report summarizes basin level accomplishments and investments related to water quality improvements, fish recovery, and watershed health. The report also provides an overview of state agency actions and recommendations to enhance the effectiveness of the Oregon Plan. Close