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Thursday, April 23, 2020 | History

3 edition of Effects of forest cover on volume of water delivery to soil during rain-on-snow found in the catalog.

Effects of forest cover on volume of water delivery to soil during rain-on-snow

Bengt A. Coffin

Effects of forest cover on volume of water delivery to soil during rain-on-snow

final report for Project SH-1 (Rain-on-snow field study)

by Bengt A. Coffin

  • 76 Want to read
  • 16 Currently reading

Published by The Committee in Seattle, WA .
Written in English

    Subjects:
  • Hydrology, Forest -- Washington (State) -- Finney Creek,
  • Runoff -- Washington (State) -- Finney Creek,
  • Plant-snow relationships -- Washington (State) -- Finney Creek,
  • Forest influences -- Washington (State) -- Finney Creek

  • Edition Notes

    Statementby Bengt A. Coffin and R. Dennis Harr ; submitted to Sediment, Hydrology, and Mass Wasting Steering Committee.
    ContributionsHarr, R. Dennis 1941-, TFW/CMER Sediment, Hydrology, & Mass Wasting Steering Committee (Wash.)
    The Physical Object
    Paginationxi, 118 p. :
    Number of Pages118
    ID Numbers
    Open LibraryOL13621491M
    OCLC/WorldCa32036310

    Water Quality Research Journal of Canada Groundwater transport times for a m distance for different combinations of K, neff, and i. The top value is a reference velocity (time) for the area. Climate change is already beginning to affect New York State, and these impacts are projected to grow. At the same time, the state has the ability to develop adaptation strategies to prepare for and respond to climate risks now and in the future. The ClimAID assessment provides information on climate change impacts and adaptation for eight sectors in New York State: water resources, coastal. This result suggests that any differences in soil fluxes and erosion rates during the Late Glacial, imbued by the very different climates in the two regions, have been overwhelmed by processes associated with the Holocene forest phase. The soil transport coefficient for the historical (last year) period at the subhumid site, quantified by.


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Effects of forest cover on volume of water delivery to soil during rain-on-snow by Bengt A. Coffin Download PDF EPUB FB2

Influence of Timber Harvest on Rain-On-Snow Runoff: resulting in higher rates of water delivery to soil during rain-on-snow conditions. Increased rates of water The cumulative effects of forest management activities on water resources have been receiving increasing attention in the.

during the event. The snow cover under the mature forest at the high site lost only 44 mm of SWE during the event, generating mm of runo• and leaving m of snow.

The model accurately simulated both snow cover depth and SWE during the development of the snow cover prior to the storm, and the depletion of the snow cover during the event.

FOREST DISTURBANCE AND MANAGEMENT EFFECTS ON HYDROLOGY 51 TABLE General Principles of Forest Hydrology Describing the Direct Effects of forest cover on volume of water delivery to soil during rain-on-snow book on Hydro- logic Processes of Changes in Forest Structure, Changes in Water Flowpaths, and Applica- tion of Chemicals Principles of Hydrologic Response to Changes in Forest Structure 1 Partial or complete.

Effects of forest cover on volume of water delivery to soil during rain-on-snow. Final report for Project SH-I, Sediment, Hydrology, and Mass Wasting Steering. The interception and smoothing effect of forest canopies on pulses of incident rainfall and its Effects of forest cover on volume of water delivery to soil during rain-on-snow book to the soil has been suggested as a factor in moderating peak pore water pressure in soil.

A 4-year study of erosion associated with post-fire salvage logging was initiated on 10 headwater swales ( to ha; total ha) within 40 days of fire containment, thereby capturing all.

Designart 'forest After Rain During Sunset' Floral Canvas Gold 60 In. Wide X $ Designart 'forest After Rain During Sunset' Floral Canvas Gold 60 In. Wide X Unfortunately, this book can't be printed from the OpenBook.

If you need to print pages from this book, we recommend downloading it as a PDF. Visit to get more information about this book, to buy it in print, or to download it as a free PDF. ENGINEERING MONOGRAPH No. 35 Effect of Snow Compaction on Runoff From Rain on Snow UNITED STATES DEPARTMENT OF THE INTERIOR percent water content.

During the time the sample was moved indoors, snow compacted to 87 percent of depth and the density was per. EPA/ August An Approach To WATER RESOURCES EVALUATION OF NON-POINT SILVICULTURAL SOURCES (A Procedural Handbook) by Forest Service United States Department of Agriculture Washington, D.C.

Interagency Agreement No. EPA-IAG-D Project Officer Lee A. Mulkey Technology Development and Applications Branch Environmental. Over the past several decades, forest fires in the western United States have become increasingly large, stand-replacing events burning with above-average severity (Miller and SaffordDennison et al.Sapsis et al.

).Forest fires can cause unprecedented losses of life and affect hundreds of thousands of hectares of public and industrial forestlands, require unbudgeted Cited by: 4.

–e6 J/m3 K, soil moisture content – kg water/ m3 soil). Over this period, in a model simulation without rain, the top 1m of soil is an average of 4 C colder than in the control simulation in which the observed ROS is included.

No other heat transfer mechanism can warm the soil under a snow pack at the observed rate and magnitude. Changes in cloud water interception apparently offset changes in evapotranspiration in two partially cut basins.

Changes in snowpack dynamics apparently accounted for significant increases (25–31%) in winter rain‐on‐snow events, but other types of winter events did not change, in Effects of forest cover on volume of water delivery to soil during rain-on-snow book of five basins at the H.

Andrews Experimental Forest. distribution and timing of water delivery to the soil. Water delivered to the soil, or surface water input (SWI), in a snow envi-ronment can originate by melt or rain draining from the snow cover or rain falling directly on the ground.

The timing, magnitude, and spatial distribution of SWI to. While neither of these represent a loss of water from the snow‐soil system, these mechanisms reduce snow accumulation beneath the forest canopy. For the events and conditions observed here, micrometeorological effects had relatively little effect on the rate of snow interception, and on snow interception by:   Rain on snow (ROS) events are rare in most parts of the circumpolar Arctic, but have been shown to have great impact on soil surface temperatures and serve as triggers for avalanches in the midlatitudes, and they have been implicated in catastrophic die-offs of by: 1.

Introduction. The hydrology of mountain basins is largely controlled by the distribution and timing of water delivery to the soil. Water delivered to the soil, or surface water input (SWI), in a snow environment can originate by melt or rain draining from the snow cover or rain falling directly on the by:   [1] Using precipitation and temperature data for the 20th century in combination with a macroscale hydrologic model, we evaluate changes in flood risk in the western U.S.

associated both with century‐scale warming and interannual climate variations. In addition, we examine the implications of apparent increases in precipitation variability over the region since the mid‐s. The hydrological response of rain-on-snow events has been studied on a plot scale at m altitude in the Austrian Alps.

Three artificial rain events with different intensities and durations were simulated over two snow plots on a natural snowpack and the behaviour of emerging outflow was by: Large parts of the northern hemisphere are covered by snow and seasonal frost.

Climate warming is affecting spatiotemporal variations of snow and frost, hence influencing snowmelt infiltration, aquifer recharge and river runoff patterns. Measurement difficulties have hampered progress in properly assessing how variations in snow and frost impact snowmelt by: 8.

EPA/ August c" B EFFECT OF ANIMAL GRAZING ON WATER QUALITY OF NONPOINT RUNOFF IN THE PACIFIC NORTHWEST by Keith E. Saxton Lloyd F. Elliott Robert I.

Papendick Michael D. Jawson USDA-SEA-Agricultural Research Washington State University Pullman, WA David H. Fortier USDI-Bureau of Land Management Coeur D'Alene, ID. tion and can produce flooding during rain-on-snow events (Hamlet and Lettenmaier ).

These areas that receive snow during a cool period, then followed by a warmer period and rain, can have intense flooding (Kunkel et al. The number of rain-on-snow events across the western United States has high variability but was observed to. Seasonal turbidity patterns and event-level hysteresis analysis of turbidity verses discharge in four 1 km2 headwater catchments in California’s Sierra Nevada indicate localized in-channel sediment sources and seasonal accumulation-depletion patterns of stream sediments.

Turbidity signals were analyzed for three years in order to look at the relationships between seasonal turbidity trends Cited by: 7. Untreated plots had no plant cover. Soil eroded to an average depth of cm between September and Aprilan estimated soil loss of m3/km of road.

and Tertiary volcanic soils were determined by assessing the effects on soil bulk density and water-holding capacity. but also for the management of the forest.

Soil. Assessing the controls of snow energy balance and water available for runoff in a rain-on-snow environment. Journal of Hydrology Progress 01/01/07 to 12/31/07 Outputs OUTPUTS: The Andrews LTER program seeks to understand the long-term dynamics of forest and river ecosystems of the Pacific Northwest.

size and type, liquid water content and temperature profile. The density of the snow was determined using sampling snow tubes of known volume and the liquid water content was measured with a dielectric moisture meter with a flat capacitive sensor.

The meteorological records and changes in soil moisture during the experiments are shown in Fig. The non-uniform distribution of water in snowdrift-driven systems can lead to spatial heterogeneity in vegetative communities and soil development, as snowdrifts may locally increase weathering.

The focus of this study is to understand the coupled hydrological and biogeochemical dynamics in a heterogeneous, snowdrift-dominated headwater catchment (Reynolds Mountain East, Reynolds Creek Cited by: 3.

For example, an increase of 4 °C in mean temperature is expected to reduce the duration of the period with snow cover by 50% at m a.s.l. and by 95% at m a.s.l. in the Alps (Christensen et al. Ecosystem services such as the provisioning of water are therefore regarded at particularly high risk in mountains (Schroter et al.

).Cited by: The China Creek Community Watershed (CCCW) provides drinking water to 20, residents in Port Alberni, Beaver Creek, and the Hupacasath Ahahswinis and Tseshaht Tsahaheh reserves. The primary water source is China Creek, with Bainbridge Lake serving as a backup source.

There is concern amongst elected officials, city staff, environmental organizations, and local community members that Author: Patrick J. Bell. The “forest stream” (Västrabäcken or C2) drains a 12‐ha catchment with % forest cover.

DOC in the forest stream contains comparatively greater amounts of low‐molecular weight compounds (Ågren et al. ) that are flushed into streams when soil flow paths become activated during high flow events (Bishop et al.

; Laudon et al Cited by: 8. During water year at the Mosby Mountain site (Utah, Figure), for example, a large snowpack accumulated early and T soil never dropped below 0°C. In contrast, during water yearthe snowpack accumulated slowly and was thin during the early winter. This allowed the soil to cool, and T soil remained well below 0°C for most of the winter.

Soil structure is significantly reduced by operating heavy equipment over soils. The pressure applied by heavy equipment compacts the macropores, reducing soil volume and increasing soil density. This impact is called soil compaction (Figure ). The effects of soil compaction on tree growth are well documented (Poff ).

with an annual peak during spring runoff, and occasional winter peaks from rain-on-snow events. Bankfull discharge in the study reach is estimated to be m3/s. Gneiss and granite compose the dominant lithology of the study area (Hyde, ). Soils are generally thin, poorly developed sandy to.

BACKGROUND | Forests and Water WATER, CLIMATE CHANGE, AND FORESTS | 5 Ongoing and projected climate changes compound the effects of other factors on soil resources, and increase the need for watershed treatments to restore degraded soils and stabilize sites at increased risk of erosion, loss of porosity, and loss of soil organic matter.

Preliminary estimates of the various waters’ residence times in the catchments were 5 years for deeper groundwaters. The effects of frozen soil on snowmelt runoff in Vermont were studied by Stanley and Chalmers ().

image All images latest This Just In Flickr Commons Occupy Wall Street Flickr Cover Art USGS Maps. Metropolitan Museum. Top Full text of "Selected water resources abstracts" See other formats.

Table Forestry-Related Impacts During Rain-on-Snow Events Watershed % of watershed in ROS Zone Historic Crown Closure in ROS % of ROS with 30% Volume 45 no. 4, April Equations for the entire soil-water characteristic curve of a volume change soil - Hung Q.

Pham and Delwyn G. Fredlund Rate-dependent soil behavior in seismic site response analysis - Duhee Park and Youssef M.

Hashash Seismic response of sands in centrifuge tests - Mohammad H. Rayhani. Ukraine has little forest cover and an overall deficiency of forest resources (UNECE ).

At the same time forests are distributed over the territory in a very irregular way: forest cover in the steppe zone is million ha ( %), and in the Carpathians it is million ha ( %). Free water is retained in the snowpack until the threshold density is attained.

Subsequent melting releases this free water. The procedure described, which uses a water budget based on the concept of snow compaction and a threshold density, has been a valuable aid in our design flood studies to estimate runoff from a design condition of warm. Nearly all sites pdf strong natural or fire-induced water repellency, so the runoff ratios were pdf % larger for the high-severity plots in the two more recent fires than for the unburned or low-severity plots, The two high-severity plots in the wildfire had very low runoff ratios., and this probably was due to the high soil.A11L Abstract Download pdf Use of Multiple-Angle Snow Camera (MASC) Observations as a Constraint on Radar-Based Retrievals of Snowfall Rate, A24D Abstract Title: Towards improved understanding of cloud influence on polar surface energy budgets using CloudSat and CALIPSO observations, A33G Abstract Title: Coupling of Clouds, Convection, Radiation, and Aerosols in the Climate System I .Other articles touch on mitigation, for example forest carbon sequestra-tion, but ebook presented under other headings.

In fact, the articles under any category may relate to multiple facets of the NPS climate change response strategy. Finally, in a few months we will follow up with our.