Northern Nevada Water Supply Outlook Northern Nevada Planning - - PowerPoint PPT Presentation

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Northern Nevada Water Supply Outlook Northern Nevada Planning - - PowerPoint PPT Presentation

Northern Nevada Water Supply Outlook Northern Nevada Planning Commission Bill Hauck, Senior Hydrologist April 03, 2019 1 Northern Nevada Water Supply Status and Outlook for 2018 2 NRCS River Basin Snow Water Content % Average 3 NRCS River


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Northern Nevada Water Supply Outlook

Northern Nevada Planning Commission

Bill Hauck, Senior Hydrologist April 03, 2019

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Northern Nevada Water Supply Status and Outlook for 2018

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NRCS River Basin Snow Water Content

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% Average

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NRCS River Basin Snow Water Content

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% Average

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NRCS River Basin Snow Water Content

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% Average

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Truckee River Basin Snowpack

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20 40 60 80 100 120 140 160 180 200 220 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019

Percent of Average (%)

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Lake Tahoe Basin Snow Water Equivalent

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Truckee River Basin Snow Water Equivalent

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Bill Hauck, Senior Hydrologist Email: bhauck@tmwa.com O: (775) 834-8111 M: (775) 250-1333

Thank you!

Questions?

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Lake Tahoe Elevation (actual and projected through 2019)

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Elevation in Feet Above Sea level

6,220.00 6,221.00 6,222.00 6,223.00 6,224.00 6,225.00 6,226.00 6,227.00 6,228.00 6,229.00 6,230.00 10/1/2013 1/1/2014 4/1/2014 7/1/2014 10/1/2014 1/1/2015 4/1/2015 7/1/2015 10/1/2015 1/1/2016 4/1/2016 7/1/2016 10/1/2016 1/1/2017 4/1/2017 7/1/2017 10/1/2017 1/1/2018 4/1/2018 7/1/2018 10/1/2018 1/1/2019 4/1/2019 7/1/2019 10/1/2019 1/1/2020

4/03 NRCS Projected GCR (ft) 50% COE 2.4’ / 180% of avg (APR-HIGH)

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NRCS River Basin Snow Water Content

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% Average

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The Truckee River System

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Lake Tahoe

Donner Lake Prosser Independence Lake Boca Stampede Pyramid Lake Lahontan Reservoir

Derby Dam

FALLON RENO/SPARKS

NORTH

Truckee River

CALIFORNIA NEVADA

Carson River

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Truckee River at Farad (actual and projected through 2019)

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Discharge in Cubic Feet Per Second

1,000 2,000 3,000 4,000 5,000 6,000 10/1/2018 11/1/2018 12/1/2018 1/1/2019 2/1/2019 3/1/2019 4/1/2019 5/1/2019 6/1/2019 7/1/2019 8/1/2019 9/1/2019 10/1/2019 11/1/2019 12/1/2019 1/1/2020

4/03 Projected NRCS Volume at CA/NV State Line (50% COE) 540 KAF (207% of avg)

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Actual Truckee River Flows at Farad vs. Decree Flows

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USGS Gage at Farad (CA/NV state line) #10346000

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TMWA Sources in 2018

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Groundwater 16% Surface Water 84%

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NRCS River Basin Snow Water Content

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% Average

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Bill Hauck, Senior Hydrologist Email: bhauck@tmwa.com O: (775) 834-8111 M: (775) 250-1333

Thank you!

Questions?

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Bill Hauck, Senior Hydrologist Email: bhauck@tmwa.com O: (775) 834-8111 M: (775) 250-1333

Thank you!

Questions?

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SLIDE 20

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Bill Hauck, Senior Hydrologist Email: bhauck@tmwa.com O: (775) 834-8111 M: (775) 250-1333

Thank you!

Questions?