July 21, 2020 Madera County Water and Natural Resources Department - PowerPoint PPT Presentation

Demand Management July 21, 2020 Madera County Water and Natural Resources Department Stephanie Anagnoson and Greg Young

Madera Water District Satellite-based ET Analysis

Madera Water District Cropped acres ~ 3,250

(source: Dept. of Water Resource 2016 Crop Layer) Madera Water District Cropped acres ~ 3,250 One crop: pistachios

Madera Water District Madera Water District GSA Cropped acres: ~ 3,250 14,000 One crop: pistachios Total ET: ~12,000 af/yr 12,000 10,000 8,000 6,000 4,000 2,000 - 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019

(source: Formation Environmental) Madera Water District 2014 Satellite-based ET Madera Water District GSA 14,000 12,000 10,000 8,000 6,000 4,000 2,000 - 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019

(source: Formation Environmental) Madera Water District 2016 Satellite-based ET Madera Water District GSA 14,000 12,000 10,000 8,000 6,000 4,000 2,000 - 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019

(source: Formation Environmental) Madera Water District 2019 Satellite-based ET Madera Water District GSA 14,000 12,000 10,000 8,000 6,000 4,000 2,000 - 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019

Madera County GSA – Chowchilla – West Side Satellite-based ET Analysis

Madera GSA Chowchilla - 2010 West Total acres ~ 30,000

Madera GSA Chowchilla - 2011 West Total acres ~ 30,000

Madera GSA Chowchilla - 2012 West Total acres ~ 30,000

Madera GSA Chowchilla - 2013 West Total acres ~ 30,000

Madera GSA Chowchilla - 2014 West Total acres ~ 30,000

Madera GSA Chowchilla - 2015 West Total acres ~ 30,000

Madera GSA Chowchilla - 2016 West Total acres ~ 30,000

Madera GSA Chowchilla - 2018 West Total acres ~ 30,000

2012 2018 ~3,400 acres

2005 Bare/Grazing Alfalfa? Alfalfa?

2010 Bare/Grazing New Trees/Vines Alfalfa?

2012 New Trees/Vines New Trees/Vines New Trees/Vines

2018 Established Trees/Vines Established Trees/Vines Established Trees/Vines

Madera County GSA Satellite-based ET Analysis

Madera County GSA - Madera Subbasin Madera County GSA - Chowchilla Subbasin 300,000 300,000 250,000 250,000 200,000 200,000 150,000 150,000 100,000 100,000 50,000 50,000 - - 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019

Madera County GSA - Madera Subbasin Madera County GSA - Madera Subbasin 300,000 300,000 ETPrecip estimated ETAW 250,000 250,000 Linear (Series3) 200,000 200,000 AFY 150,000 150,000 100,000 100,000 50,000 50,000 - 0 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019

March 2015

August 2017

2010

2014

2016

2019

April 2010 August 2012 March 2017 August 2018

Benefits and Drawbacks of Allocations Description: Using satellite imagery/meter data, use and track an annual allocation that ramps down over time. Benefits Drawbacks • Gives feedback on water use (as • Administrative burden a tool for better irrigation • Fair amount of accuracy management) checking (needs a year to ramp • Could accompany a rate up) structure • Allows for individual decisions • Provides certainty

Staff Recommendation Staff recommends exploring allocation options with the goal of adopting an allocation by the end of the year. The allocation could be developed with feedback from the Advisory Committee, and would be used simply for feedback during 2021.