August 27, 2012

August 27, 2012 August 27, 2012 - Start

Added : 2016-10-21 Views :41K

Download Presentation

August 27, 2012




Download Presentation - The PPT/PDF document "August 27, 2012" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.



Presentations text content in August 27, 2012

Slide1

August 27, 2012

GRU – WAT

Green River Basin Daily Model

Slide2

Green River Basin Daily Model (GRM)

Overview

Update

Current Daily Results

Enhancements

Future Development

Slide3

overview

Green River Model

Slide4

Purpose

The GRM is being developed to project water availability in the Upper Green River Basin based on current operating criteria contained in the Flaming Gorge Record of Decision (ROD), and assess future impacts of water development in the Upper Colorado Region on the Green River. Upper Colorado River Endangered Fish Recovery Program published Green River flow and temperature recommendations that require operational decision-making processes and analysis on a daily time step.

Slide5

RiverWare Colorado River Simulation System (CRSS)

Monthly time step 2007 UCRC Demand ScheduleSpatial and temporal distributionDirect Natural Flow – Index Sequential Method (ISM)Flaming Gorge Record of Decision Flow recommendation compliance based on calculated values at specific daily thresholdsNeither Flaming Gorge nor Jensen has a daily hydrograph in CRSS

Slide6

Update and results

Green River Model

Slide7

CRSS Rule Updates

Direct Natural Flow – Index Sequential Method (ISM)

Daily disaggregation calculations are done at the end of each model run (post processing)

Demands are the 2007 UCRC depletions

Daily disaggregation of Yampa River spring flows

April-July period

Flaming Gorge daily spring hydrograph

Record of Decision rule set

Static start date on May 23

April-July daily flows and monthly outflow are different due to post-processing being over April-July period

Daily Base Flows (Aug-Mar) are averaged monthly data

Slide8

GRM Flaming Gorge Hydrograph

Single FG “Trace”

All FG Releases

Slide9

Yampa Daily Disaggregated Spring Peak Flows

Yampa daily disaggregation meets daily spring peak flow of 14,000

cfs

is projected 40% of the time. Adding FG power plant capacity of 4,600 cfs results in recommended 18,600 cfs at Jensen.

Slide10

Jensen Daily Peak Flow Hydrograph

Spring flows meet one-day peak requirement of 18,600

cfs

at least 40% of the time

Slide11

Jensen Daily 14-Day Duration Hydrograph

Static FG start date impacts the ability to model meeting at least 14 days at 18,600

cfs

40% of the time

Slide12

Enhancements and future development

Green River Model

Slide13

Green River Model Rule Updates

Calculations are done in March before spring peak and no longer need proportional data

Allows peak to occur in April

Demands are 2007 UCRC depletions

Daily disaggregation of Yampa River spring flows

April-July period using same data

Flaming Gorge daily hydrograph

Record of Decision rule set

Releases start 3 days before maximum Yampa peak

April-July daily flows summed to monthly outflow

Daily Base Flows are averaged monthly data

Slide14

Green River Model Development

Updated rules are limited in

hydrologically

extreme years

ISM run aborts in minimum release and flood control situations

Dynamic FG peak release to assist in scenario development

LTSP

Basin Study scenarios

Potential to optimize release magnitudes and durations to conserve water and meet flow targets

Utilize Basin Study inflow hydrology and demand scenarios

Slide15

Flaming Gorge Working GroupAugust 2012

Questions?

Slide16

Slide17

Slide18

Slide19

Slide20


About DocSlides
DocSlides allows users to easily upload and share presentations, PDF documents, and images.Share your documents with the world , watch,share and upload any time you want. How can you benefit from using DocSlides? DocSlides consists documents from individuals and organizations on topics ranging from technology and business to travel, health, and education. Find and search for what interests you, and learn from people and more. You can also download DocSlides to read or reference later.
Youtube