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 Basin Snow Water Content
% Average
4 NRCS River Basin Snow Water Content
% Average
5 Truckee River Basin Snowpack
220
200
180
160
140
120
100
80
Percent of Average Percent(%) Average of 60
40
20
0 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
6 Lake Tahoe Basin Snow Water Equivalent
7 Truckee River Basin Snow Water Equivalent
8 Thank you! Questions?
Bill Hauck, Senior Hydrologist Email: [email protected] O: (775) 834-8111 M: (775) 250-1333
9 Lake Tahoe Elevation (actual and projected through 2019)
6,230.00
6,229.00
6,228.00
6,227.00
6,226.00 4/03 NRCS Projected GCR (ft) 50% COE 2.4’ / 180% of avg (APR-HIGH) 6,225.00
6,224.00
6,223.00
Elevation in Feet Above Sea level level Sea Above in Feet Elevation 6,222.00
6,221.00
6,220.00 1/1/2014 4/1/2014 7/1/2014 1/1/2015 4/1/2015 7/1/2015 1/1/2016 4/1/2016 7/1/2016 1/1/2017 4/1/2017 7/1/2017 1/1/2018 4/1/2018 7/1/2018 1/1/2019 4/1/2019 7/1/2019 1/1/2020 10/1/2013 10/1/2014 10/1/2015 10/1/2016 10/1/2017 10/1/2018 10/1/2019
10 NRCS River Basin Snow Water Content
% Average
11 The Truckee River System
Pyramid Lake CALIFORNIA NEVADA
Derby Dam Stampede FALLON Independence Lake Boca RENO/SPARKS Lahontan Prosser Reservoir Donner Lake
Carson River Truckee River Lake Tahoe
NORTH
12 Truckee River at Farad (actual and projected through 2019)
6,000 4/03 Projected NRCS Volume at CA/NV State Line (50% COE) 540 KAF (207% of avg)
5,000
4,000
3,000
2,000 Discharge in Cubic Feet Per Second Discharge Per in Cubic Feet
1,000
0 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 1/1/2020 10/1/2018 11/1/2018 12/1/2018 10/1/2019 11/1/2019 12/1/2019
13 Actual Truckee River Flows at Farad vs. Decree Flows
14 USGS Gage at Farad (CA/NV state line) #10346000
15 TMWA Sources in 2018
Groundwater 16%
Surface Water 84%
16 NRCS River Basin Snow Water Content
% Average
17 Thank you! Questions?
Bill Hauck, Senior Hydrologist Email: [email protected] O: (775) 834-8111 M: (775) 250-1333
18 Thank you! Questions?
Bill Hauck, Senior Hydrologist Email: [email protected] O: (775) 834-8111 M: (775) 250-1333
19 Thank you! Questions?
Bill Hauck, Senior Hydrologist Email: [email protected] O: (775) 834-8111 M: (775) 250-1333
20