Last edited by Faelrajas
Wednesday, July 29, 2020 | History

2 edition of Summer low flow characteristics of forest streams in northeast Oregon found in the catalog.

Summer low flow characteristics of forest streams in northeast Oregon

Gregory L. Widner

Summer low flow characteristics of forest streams in northeast Oregon

by Gregory L. Widner

  • 19 Want to read
  • 15 Currently reading

Published .
Written in English

    Subjects:
  • Streamflow -- Oregon.,
  • Stream measurements -- Oregon.

  • Edition Notes

    Statementby Gregory L. Widner.
    The Physical Object
    Pagination93 leaves, bound :
    Number of Pages93
    ID Numbers
    Open LibraryOL15373173M

    The majority (77%) of coastal forests in Oregon is under private (68%) or state (9%) ownership and managed for timber production (Spies et al., ). Findings from this study are most applicable to streams in mid-successional forests (year-old conifer), which also make up the majority (82%) of Oregon state and private forests (Spies et. River system in northeast Oregon, migratory bull trout were observed in waters exceeding 21 degrees Celsius (daily maximum temperature) for several weeks (Phil Howell, U.S. Forest Service, personal communication). Suitable Habitat or “Patch” Size. Although bull trout are widely distributed over a large geographic area, they exhibit a patchy.

    Oregon is miles ( km) north to south at longest distance, and miles ( km) east to west. With an area of 98, square miles (, km 2), Oregon is slightly larger than the United is the ninth largest state in the United States. Oregon's highest point is the summit of Mount Hood, at 11, feet (3, m), and its lowest point is the sea level of the . A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases a river flows into the ground and becomes dry at the end of its course without reaching another body of water. Small rivers can be referred to using names such as stream, creek, brook, rivulet, and are no official definitions for the generic term .

    Portland, Oregon, only 50 miles away--the blast was not heard. Subsequent studies by the Oregon Museum of Science and Industry demonstrated a so-called "quiet zone" around Mount St. Helens, extending radially a few tens of miles, in which the eruption was not heard. The creation of the "quiet zone" and the degree to which the eruption. Ecological Effects on Streams from Forest Fertilization—Literature Review and Conceptual Framework for Future Study in the Western Cascades By CHAUNCEY W. ANDERSON Water-Resources Investigations Report 01– Prepared in cooperation with the BUREAU OF LAND MANAGEMENT Portland, Oregon:


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Summer low flow characteristics of forest streams in northeast Oregon by Gregory L. Widner Download PDF EPUB FB2

Summer low flow characteristics of six forest streams in Northeast Oregon were examined using long term streamflow records. Time series and trend analysis revealed highly significant (alpha=O.O1) increasing trends in summer low flow over the period of record on four of the selected streams, and significant (alpha=O) year-to-year dependence Author: Gregory L.

Widner. The stream size categories are based on the average annual flow of a stream. Average annual flow is measured in cubic feet per second (cfs) and is simply the total volume of water (in cubic feet) transported by a stream during a normal year divided by the total seconds in a Size: KB.

Get this from a library. Hydrology of small forest streams in western Oregon. [R Dennis Harr; Pacific Northwest Forest and Range Experiment Station (Portland, Or.); United States. Forest Service.] -- "The hydrology of small forest streams in western Oregon varies by time and space in terms of both streamflow and channel hydraulics.

Overland flow rarely occurs on. Similar ways of presenting low-flow characteristics plotted against distance along a stream channel are sometimes referred to as ‘flow line technique’, ‘low-flow profiles’ etc.

(Riggs,Browne,Characteristics of low flows,Carter et al.,Domokos and Sass,Gottschalk and Perzyna, ). Cited by: Information on low-flow characteristics of streams is essential for the management of water resources. This report provides equations for estimating the 1- 7- and day mean low flows for a recurrence interval of 10 years and the harmonic-mean flow at ungaged, unregulated stream sites in Indiana.

These equations were developed using the low. Station Number Station name Date/Time Gage height, feet Dis-charge, ft3/s Long-term median flow 8/15 MALHEUR AND HARNEY LAKES BASIN. As small creeks flow downhill they merge to form larger streams and rivers.

Rivers eventually end up flowing into the oceans. If water flows to a place that is surrounded by higher land on all sides, a lake will form. If people have built a dam to hinder a river's flow, the lake that forms is a reservoir. Rivers serve many uses.

OFRMonthly low-flow characteristics of Georgia streams (Abstract only) Hawaii. SIRFlood-Frequency Estimates for Streams on Kaua'i, O'ahu, Moloka'i, Maui, and Hawai'i, State of Hawai'i; SIRMedian and Low-Flow Characteristics for Streams Under Natural and Diverted Conditions, Northeast Maui, Hawaii.

The national forest has a number of lakes and streams available for sport fishing. There are also camping and picnic sites located near Lakeview. In the winter, alpine skiers can enjoy their sport at Warner Canyon Ski Area.

The ski hill is located in the Fremont–Winema National Forest 10 miles (16 km) northeast of Lakeview on Oregon Route Oregon Department of Forestry’s mission is to serve the people of Oregon by protecting, managing, and promoting stewardship of Oregon’s forests to enhance environmental, economic, and community sustainability.

Forest Practices and Stream flow In Western Oregon R. DENNIS HARR PACIFIC NORTHWEST FOREST AND RANGE EXPERIMENT STATION U.S. DEPARTMENT OF AGRICULTURE FOREST SERVICE PORTLAND, OREGON USDA FOREST SERVICE GENERAL TECHNICAL REPORT PNW This file was created by scanning the printed.

Sites were initially chosen based on proximity to areas of urban influence in the northern U.S. (Fig. 1, Table 1).Three sites with a low degree of urbanization in northeast Wisconsin and one site in Oregon were included to evaluate non-urban influence, and the Trinity River in Texas was also examined as a non-deicing reference site in an urban area.

The low level jet stream is a sheet of strong winds, thousands of miles long, hundreds of miles wide and hundreds of feet thick that forms over flat terrain such as the prairies.

Wind speeds of 40 knots are common, but greater speeds have been measured. Low level jet streams are responsible for hazardous low level shear. Recent low flow years, particularly andstemmed from low winter precipitation. Snowmelt-related hydrologic variables already show a decline in basins with a snowmelt influence - earlier peak flow, lower summer flow, lower spring snowpack.

Figure 4. At-risk snow mapped across the Pacific Northwest (Figure from Nolin and Daly,   Rivers and streams are created by precipitation, melting ice or springs. These moving bodies of water flow through channels in which the bottom is known as the bed and the sides as the banks.

Rivers can be wide and deep, and many empty into larger bodies of waters such as oceans or lakes. Gulf Stream, warm ocean current flowing in the North Atlantic northeastward off the North American coast between Cape Hatteras, N.C., U.S., and the Grand Banks of Newfoundland, Can.

In popular conception the Gulf Stream also includes the Florida Current (between the Straits of Florida and Cape. Streamflow permanence in headwater streams across four geomorphic provinces in Northern California. K.D., Hatten, J.A., Jones, J.A., Hale, V.C., and Ice, G.G.

Long-term effects of forest harvesting on summer low flow deficits in the Coast Range of Oregon. A catchment-scale assessment of stream temperature response to. the number of low-flow days, i.e., days with average flow below cubic meter per second per square kilometer (m3/s• km2)(1 csmZ/) as a criterion for evaluating changes in minimum flows.

A significant reduc-tion in number of low-flow days was observed for 5 years after a ha watershed (AL-1) was 82 percent clearcut and burned (fig.

Naturescaping: A Landscaping Partnership with Nature. Oregon Department of Fish and Wildlife. Revised edition Plants Of the Pacific Northwest Coast. Pojar & MacKinnon Lone Pine, ; Poisonous Plants Encountered in Oregon. Circular # Oregon State Extension Service. Portland Plant List.

City of Portland, Bureau of Planning, amended   Similar to that observed for other stream properties (e.g., nitrogen load, drainage area), the flow contributions that originate in the incremental watersheds of higher-order streams, expressed as a percentage of the total flow volume in all streams, are relatively small and decline monotonically with increases in stream order, from about 20%.

mixed-conifer and mixed-evergreen forests of south-western Oregon, where low-intensity, frequent fires had an important role in forest development. Fire suppression is changing the character of these old-growth forests by changing the disturbance processes and forest structure and composition.Oregon is home to many different types of forests, with varying species of trees, plants and wildlife.

The forest type that dominates a region depends on climate, elevation, wind and rainfall, temperature and soil conditions.From the crest of the Cascades eastward, Oregon's "eastside" offers some of our most stunning landscapes. Spectacular scenery, recreation, fishing, rafting, and hunting await anyone intrepid enough to travel to or live in the drier side of the state – from Hells Canyon in the northeast, to the Steens and Strawberry Mountains in the southeast, and the Ochocos and John Day Basin .