Water Year 2013: Current Conditions and Early Season Outlook in the Colorado River Basin

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Water Year 2013: Current Conditions and Early Season Outlook in the Colorado River Basin. CRFS November 14, 2012. Entering the Season (what we know now): Coming off one of worst runoff years - Soil Moisture (not good) - Baseflow (not good ) - PowerPoint PPT Presentation

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Water Year 2013: Current Conditions and

Early Season Outlook in the Colorado River Basin

CRFS November 14, 2012

Water Year 2013:Entering the Season (what we know now):

Coming off one of worst runoff years - Soil Moisture (not good) - Baseflow (not good)ENSO Neutral Conditions (no help)

October:Another dry month- Upper Green River Basin near normal

November:Not great so far…

CBRFC Model Soil Moisture11/1/12

USGS Monthly Average StreamflowOctober 2012(includes regulated flows)

Base flows

East River at Almont, COAnimas River at Durango, CO

Yampa River at Steamboat Springs, COGreen at Warren Bridge, WY

OCTNOV

DEC JAN FEB MARAPR

MAYJUN JUL

AUG SEP OCTNOV

DEC0

100200300400500600700800900

Lake PowellUnregulated Monthly Inflow

WY 2002WY 2012

KAF

Regulated Flows

ForecastVolumes

ENSO Neutral

Sources: cpc.ncep.noaa.gov and iri.columbia.edu/climate/ENSO

CPC Forecasts (10/18)

Nov. 13, 20125 Day Precipitation TotalGage/Radar Mosaic

Nov. 13, 20127 Day Precipitation Percent Normal

November 13, 2012

% Current Average

% Seasonal Peak

Upper Green 72 7

Yampa/White 58 7

Duchesne 113 15

Upper Colorado 54 7

Gunnison 58 8

Dolores 63 7

San Juan 70 10

November Precipitation Forecasts

Early Season ESP

10/15/2012

10/17/2012

10/19/2012

10/21/2012

10/23/2012

10/25/2012

10/27/2012

10/29/2012

10/31/2012

11/2/2012

11/4/2012

11/6/2012

11/8/2012

11/10/2012

11/12/2012

0

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Flaming Gorge WY2013Apr-Jul ESP Volume Forecasts

5 day QPF 90%0 day QPF 90%

ESP RUN DATE

KAF

Early Season ESP

10/15/2012

10/17/2012

10/19/2012

10/21/2012

10/23/2012

10/25/2012

10/27/2012

10/29/2012

10/31/2012

11/2/2012

11/4/2012

11/6/2012

11/8/2012

11/10/2012

11/12/2012

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2

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16

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Blue MesaWY2013Apr-Jul ESP Volume Forecasts

5 day QPF 90%0 day QPF 90%

ESP RUN DATE

KAF

Early Season ESP

10/15/2012

10/17/2012

10/19/2012

10/21/2012

10/23/2012

10/25/2012

10/27/2012

10/29/2012

10/31/2012

11/2/2012

11/4/2012

11/6/2012

11/8/2012

11/10/2012

11/12/2012

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Lake Powell WY2013Apr-Jul ESP Volume Forecasts

5 day QPF 90%0 day QPF 90%

ESP RUN DATE

KAF