The overarching objective of this paper is to identify how the three tiers of human well-being (i.e., economics, ecosystems, and social) are linked to healthy landscapes and a species-rich ecosystem mediated by healthy cougar populations. Does the cougar help mitigate Oregon’s Lyme disease, chronic wasting disease (CWD), or elements of...
Object Watershed Link Simulation (OWLS) is a physically based watershed model. In the OWLS
model, a watershed is defined as a three-dimensional object with linkages between cells and their
attributes (e.g., area, slope, soil type, etc.). A cell is defined as the linkages of edges and their attributes
(e.g., length,...
The purpose of this paper is to illustrate the use of Linear Programming (LP) and
other mathematical procedures to evaluate watershed and perpetuity constraints on forest
land use for a selected scenario in Terengganu, Peninsular Malaysia. The paper describes
the system of modelling and forecasting estimates of potential timber growth,...
This study examined the occurrence of coarse woody debris (i.e., pieces greater than 0.15 m in diameter and 2.0 m in length) in first- through fifth-order streams located within the Drift Creek Basin of the Oregon Coast
Range. Nine "tributary reaches" were surveyed to determine how three land management treatments...
An infiltration capacity and surface erodibility study was conducted six years after forest harvesting in the Oregon Cascades. A portable rainfall simulator was utilized to obtain field measurements on the Coyote Creek and Hi-15 Watersheds during summer and fall, 1977. Seasonal variations were found to occur in infiltration
capacities and...
A descriptive model of bed material routing was developed for alluvial streams exhibiting sequences of pools and armored riffles. The model assumes that channel geometry, sediment transport competence and the availability of sediments for transport are all non-uniform in the downstream direction. Bedload transport is described as occurring in two...
The Steamboat Creek basin drains 227 mi² (588 km²) of steep forested terrain into the North Umpqua River of Southwest Oregon, 39
mi (63 km) northeast of Roseburg. Summer base flows for Steamboat Creek average 83 cfs (2.35 m³/sec). Steamboat Creek and its
tributaries are considered important to the production...
Many municipalities throughout western Oregon rely upon forested watersheds as a source for domestic water supply. These watersheds are commonly managed by state or
federal agencies or private corporations for timber production. Activities related to forest management within municipal watersheds have the potential to adversely affect water quality. Timber harvesting...
Meyer's Canyon, a tributary of Bridge Creek in the John Day
Basin, is a deeply incised valley fill in northcentral Oregon. The
current channel is incised to the Cretaceous and Tertiary bedrock.
To determine the precedence of the current incision and the variation
and timing of depositional sequences, the sediments...
Through the trapping of sediment behind dams, the
presence of beaver in a watershed may cause substantial
changes to fluvial and geomorphic processes. In an
effort to investigate sedimentation patterns in beaver
ponds in the Oregon Coast Range, a case study was made of
the annual accumulation of sediment in...
