Last edited by Felar
Friday, May 8, 2020 | History

2 edition of Impact of streamflow variability on the Colorado River system operation found in the catalog.

Impact of streamflow variability on the Colorado River system operation

Julia A. Keedy

Impact of streamflow variability on the Colorado River system operation

by Julia A. Keedy

  • 101 Want to read
  • 21 Currently reading

Published by Colorado Water Resources Research Institute in [Fort Collins, Colo.?] .
Written in English

    Subjects:
  • Hydrologic cycle -- Colorado River Watershed (Colo.-Mexico),
  • Watershed management -- Colorado River Watershed (Colo.-Mexico),
  • Water-supply -- Colorado River Watershed (Colo.-Mexico),
  • Colorado River Watershed (Colo.-Mexico)

  • Edition Notes

    StatementJulia A. Keedy, [et al.]
    SeriesCompletion report -- no. 208, Completion report (Colorado Water Resources Research Institute) -- no. 208.
    ContributionsColorado Water Resources Research Institute.
    Classifications
    LC ClassificationsGB848 .K43 2007
    The Physical Object
    Paginationix, 77 p. :
    Number of Pages77
    ID Numbers
    Open LibraryOL24059316M
    LC Control Number2008397266

    Water from the Colorado River is delivered to California through two systems: Colorado River Aqueduct: The Colorado River Aqueduct is owned and operated by the Metropolitan Water District, and delivers water miles from Lake Havasu to Southern California. Learn more about the Colorado River Aqueduct by clicking here. @article{osti_, title = {Climate-driven disturbances in the San Juan River sub-basin of the Colorado River}, author = {Bennett, Katrina E. and Bohn, Theodore J. and Solander, Kurt and McDowell, Nathan G. and Xu, Chonggang and Vivoni, Enrique and Middleton, Richard S.}, abstractNote = {Accelerated climate change and associated forest disturbances in the southwestern USA are .

    Geomorphology and endangered fish habitats of the Upper Colorado River: historic changes in streamflow, sediment load, and channel morphology. Water Resources Research , p. Flow regime is represented by graphs of flow over time (hydrographs) and flow duration curves that show the timing, magnitude, and frequency of flow conditions.   Streamflow and the Water Cycle. If you read our discussion on the role the oceans play in the water cycle, you know that evaporation from the oceans is the primary way that water returns to the atmosphere from the Earth's surface. Water returns to the Earth from precipitation falling on the land, where gravity either takes it into the ground as infiltration or it begins running downhill as.

    likely effects of operation of the reser-voir that accounts for the day-to-day and year-to-year uncertainty and variability in Colorado River streamflow and salinity, quantity and salinity of runoff from the Sulphur Gulch watershed, and evapora-tion from the proposed reservoir. Description of Model The model uses linked hydrology and. Variation of streamflow and sediment load in the Yellow River basin has received considerable attention due to its drastic reduction during the past several decades. This paper presents a detailed investigation on the changes of streamflow and sediment load from to using monthly observations at four gauging stations along the Yellow River.


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Impact of streamflow variability on the Colorado River system operation by Julia A. Keedy Download PDF EPUB FB2

The response of the river system to the different streamflow scenarios is evaluated using the Bureau of Reclamation’s Colorado River Simulation System (CRSS) model implemented in RiverWare software, a river basin modeling program developed by CADSWES.

The model outputs are analyzed in order to determine the occurrence. Impact of streamflow variability on the Colorado River system operation» Impact of streamflow variability on the Colorado River system operation.

Average Rating. Author. Keedy, Julia A. Publisher. Colorado Water Resources Research Institute. Pub. Date [] Language. English.

Impact of streamflow variability on the Colorado River system operation» Impact of streamflow variability on the Colorado River system operation. Average Rating. Author. Keedy, Julia A. Publisher. Colorado Water Resources Research Institute. Pub. Date. This paper focuses on the relationship between streamflow in the Colorado River and climate indicators such as the Multivariate ENSO Index (MEI) and tree-ring data.

Improved procedures for streamflow reconstruction using tree-ring information are presented. Figure 1 shows the Colorado River basin. Of significance is the Lees Ferry gauge, which divides the basin into upper and lower portions per the Colorado River Compact (Colorado River Commission et al.

More than 90% of the natural streamflow in the basin passes through this by: Upper Colorado River basin streamflow has declined by roughly 20% over the last century of the instrumental period, based on estimates of naturalized flow above Lees Ferry. Here we assess factors causing the decline and evaluate the premise that rising.

Understanding the effects of climate variability and reservoir operation on runoff is important for shipping, irrigation and water supply services, especially during extreme drought years. @article{osti_, title = {Shifts in historical streamflow extremes in the Colorado River Basin}, author = {Solander, Kurt C.

and Bennett, Katrina Eleanor and Middleton, Richard Stephen}, abstractNote = {The global phenomenon of climate change-induced shifts in precipitation leading to "wet regions getting wetter" and "dry regions getting drier" has been widely studied.

Colorado River Basin Water Management: Evaluating and Adjusting to Hydroclimatic Variability February Recent studies of past climate and streamflow conditions have broadened understanding of long-term water availability in the Colorado River, revealing many periods when streamflow.

2 Data. Estimated natural flows for the Colorado River at Lees Ferry, representing streamflow for the upper Colorado River basin, were obtained from the Bureau of Reclamation, for the water years to (J. Prairie, personal communication, ).

These data have had the effects of depletions, diversions, and reservoir operations removed. PDF | A year-long record of reconstructed annual flows of the Colorado River at Lees Ferry is analysed using singular spectrum analysis and | Find, read and cite all the research you need.

Simulations performed for a year period for the Colorado and Mekong river basins indicate irrigation water requirements of 10 and km 3 year −1, respectively, corresponding to streamflow decreases of 37 and %. The increase in latent heat flux is accompanied by a decrease in annual averaged surface temperatures of °C for both.

[1] Population growth and a changing climate will tax the future reliability of the Colorado River water supply. Using a heuristic model, we assess the annual risk to the Colorado River water supply for – Projected demand growth superimposed upon historical climate variability results in only a small probability of annual reservoir depletion through FORECASTING STREAMFLOW FOR COLORADO RIVER SYSTEMS by D.

Wang and J. Salas Department ofCivil Engineering Colorado State University December Grant N. G Project N. 10 and Grant N. G Project N.

07 The research on which this report is based was financed in part bythe. The above discussion has focused on temporal variability of flow—changes with time in any given river or stream. Another kind of variability is spatial—differences by location in the river or stream at any given point in time.

The conventional concept of streamflow is. Time-series models were developed to predict the changes in WS out to 10 years. Regressive methods and the GSL water level data were used for the depiction of decadal variability of the Colorado River WS.

Various time-series models suggest a decline in the year averaged WS since before starting to increase around The main source of this understanding has been the gaged records of streamflow, which are about years long at most. But the recent drought, with unprecedented low flows at many gages in the Colorado River basin, has called into question whether the gaged record.

Streamflow Variability. Streams and rivers play a critical role in the hydrologic cycle that is essential for all life on Earth.A diversity of biological species, from unicellular organisms to vertebrates, depend on flowing-water systems for their habitat and food resources.

Like all natural ecosystems, streams and rivers are subject to change through time. Sources of Moisture to the Colorado River Basin. Precipitation on the Colorado that the PDO phase may be associated with decadal-length periods of above- and below-average precipitation and streamflow in the Colorado River The flow values represent the amount of water in the river at Lee’s Ferry.

Thus, variability in the flow values. River ecosystems (riverscapes) encompass ecological, social, and economic processes (ecosystem functions) that interconnect organisms (ecosystem structure), including humans, over some time period.

The ecosystem boundaries are permeable with respect to energy and materials flux; therefore, even large systems are influenced by external events such as global climate change, pollution, national. Reservoir projections used in tier determinations can be sensitive to fairly small errors in inputs to 24MS, particularly when Lake Powell or Lake Mead elevations are hov ering near tier thresholds.

For example, 24MS currently uses 5-year running average values for .the Colorado River Basin’s hydroclimate, their spatial and temporal variability, and the mechanisms behind that variability. This knowledge base is dependent on the primary datasets and models described in Volume II (Chapters 4, 5, and 6) while also informing the productive application of those.Visit to get more information about this book, to buy it in print, or to download it as a free PDF.

Encompassing an area of more thansquare miles, the Colorado River basin covers portions of seven western U.S. states and part of extreme northwestern Mexico. Passing through the.