Corps of Engineers Omaha District Forecast Update - PowerPoint PPT Presentation

Corps of engineers omaha district forecast update l.jpg
Download
1 / 11

  • 298 Views
  • Updated On :
  • Presentation posted in: General

Corps of Engineers Omaha District Forecast Update. Brian Twombly Kellie Bergman January 2010 Jay Lincoln. Volumetric Water Supply Forecasts. Bureau of Reclamation projects Joint-use/flood control storage needed for expected runoff volume Clark Canyon Dam, MT 50,000 acre-feet

Related searches for Corps of Engineers Omaha District Forecast Update

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

Download Presentation

Corps of Engineers Omaha District Forecast Update

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Corps of engineers omaha district forecast update l.jpg

Corps of Engineers Omaha District Forecast Update

Brian Twombly

Kellie Bergman

January 2010

Jay Lincoln


Volumetric water supply forecasts l.jpg

Volumetric Water Supply Forecasts

  • Bureau of Reclamation projects

  • Joint-use/flood control storage needed for expected runoff volume

    • Clark Canyon Dam, MT 50,000 acre-feet

    • Canyon Ferry Dam, MT 795,000 acre-feet

    • Tiber Dam, MT 260,000 acre-feet

    • Boysen Dam, WY 145,000 acre-feet

    • Yellowtail Dam, WY 240,000 acre-feet

  • Informational purposes only

    • Glendo Dam, WY


Multi variable linear regression l.jpg

Multi-Variable Linear Regression

  • Computing April to July “natural” inflow volume to the project.

  • Independent predictor variables:

  • Antecedent conditions

  • The basin average snow water equivalent (SWE)

  • Spring-season precipitation


Slide4 l.jpg

Example of Volumetric Water Supply Forecast

(Canyon Ferry Reservoir)

IF = 2.023(ANTON) + 0.177(SAPR) + 0.265(PREAMJ) - 3.081

  • IF = The forecasted natural April through July inflow volume to Canyon Ferry in MAF.

  • ANTON = The natural October and November antecedent runoff volume in MAF.

  • SAPR = The average April 1 snowpack water content in inches of 9 snotel stations.

  • PREAMJ = The average monthly precipitation in inches for 9 stations for each month of April, May, and June.


Forecast improves as season progresses and more data becomes available l.jpg

Forecast Improves as Season Progresses and More Data becomes Available


Model development using arra funding l.jpg

Model Development Using ARRA Funding

  • Modeling is overseen by the USACE Hydrologic Engineering Center

  • West Consultants in San Diego, CA

  • Modeling three different locations:

    • Chatfield Dam in Denver, CO

    • Fall River near Hot Springs, SD

    • James River upstream of Lamoure, ND


Slide8 l.jpg

Fall River Basin, HEC-HMS models.


Slide9 l.jpg

Fall River Basin, HEC-HMS models for the Cold Brook and Cottonwood Reservoir Basins.


Slide10 l.jpg

James River Basin, HEC-HMS models for the Jamestown Reservoir Basin and downstream of the reservoir to Lamoure, ND.


Slide11 l.jpg

Chatfield Dam, HEC-HMS models for the Chatfield Basin and downstream to the Henderson Stream Gage in the South Platte River and HEC ResSim model for Chatfield Reservoir.


  • Login