South Fork Kings GSA GSA Board Technical Workshop January 17, 2019
Agenda 1. General Update 2. Recap of October Meeting 3. Management Actions 4. GSA Role/Responsibility Discussion
GSP Primary Chapters • Basin Setting • Sustainable Management Criteria • Monitoring Networks • Management Actions
SFKGSA Visualization Model & GIS GIS (Web-enabled) Visualization
SFK Groundwater Quality
Tulare Lake Subbasin (TLSB) Local Model Model Boundary Tulare Lake Subbasin Boundaries
Modeled Storage Change within TLSB + cumulative increase from 1990 + Storage increase from previous year -Storage loss from previous year cumulative loss from 1990 Long-Term Net Decline in Groundwater Storage within the TLSB
Projecting Sustainability to 2040 200 100% zero change in storage 95% 100 90% 0 85% Water Level Elevation 80% -100 75% -200 70% 65% -300 Overdraft 60% -400 55% -500 50% SFKGSA 20S20E 07H001M SFKGSA 20S20E28E003M Modeled GW Storage
Projecting Sustainability to 2040 700,000 600,000 Overdraft 500,000 Total Pumping (AF) 400,000 300,000 Sustainable Yield 200,000 100,000 - TLSB SFKGSA Sustainable Yield Overdraft
Thinking in % of Total…… 700,000 100% 90% 600,000 Total Current Pumping (AF) 80% % Current Total Pumping 500,000 70% 60% 400,000 50% 300,000 40% 30% 200,000 20% 100,000 10% - 0% TLSB SFKGSA TLSB SFKGSA Sustainable Yield Overdraft Sustainable Yield Overdraft
Defining Sustainable Yield 100% 90% “Undesirable” Storage Decline 80% = Overdraft Correction (We Are Here) 70% “Undesirable” Subsidence 60% % Total Pumping = Yield Adjustment #1 (could be zero) 50% “Undesirable” Water Quality 40% = Yield Adjustment #2 (could be zero) 30% 20% 10% 0% Sustainable Yield Overdraft
3 Steps to Sustainability 100% 1. Correct overdraft (2040) 90% 80% % Total Current Pumping 70% 60% 2. Maintain Sustainability 50% 40% 30% 3. Adaptive Management 20% 10% 0% SFKGSA Sustainable Yield Overdraft
Overdraft Reduction Allocation/Targets 100% 90% 80% 70% % Total Pumping 60% Overdraft Management Actions “Menu” 50% 2020-2040 40% 30% 20% 10% 0% SFKGSA Sustainable Yield Overdraft
Overdraft Reduction Allocation/Targets 100% Conservation/Reuse Water Export/Import 90% Land Retirement 80% Dry Year Management * 70% % Total Pumping New Storage** 60% On Farm 50% Efficiency Improvement 40% SW Delivery 30% Improvement 20% Surrounding Basin 10% Infow/outflow Improvements 0% SFKGSA S F K GS A Overdraft Management Sustainable Yield Overdraft Actions “Menu”
GSA Implementation Issues Role of GSA/Board Conservation/Reuse Water Import/Export Land Conversion • Overall Approach (GSA) Dry Year Management * – Control versus influence – Carrot versus stick New Storage** On Farm Efficiency • Monitoring Improvement SW Delivery – Verifying each contribution to Improvement overdraft correction Surrounding – Tools for adaptive management Basin Infow/outflow Improvements S F K GS A
Overdraft Reduction Allocation/Targets Boundary Inflow/Outflow Conservation/Reuse Water Import/Export Improvements Land Conversion Dry Year Management * New Storage** • Westside • North Fork Kings On Farm Efficiency • El Rico Improvement • Kaweah/Tule SW Delivery Improvement • Mid-Kings Surrounding Basin Infow/outflow • “A rising tide floats all boats” Improvements S F K GS A
Overdraft Reduction Allocation/Targets SW Delivery Conservation/Reuse Water Import/Export Improvement Land Conversion Dry Year Management * New Storage** • Main Canal Lining • Secondary Canal Lining On Farm Efficiency • Scheduling Improvements Improvement SW Delivery Improvement Surrounding SW Delivery efficiency = less pumping Basin Infow/outflow Minimize impacts to shallow wells Improvements S F K GS A
Overdraft Reduction Allocation/Targets On-Farm Efficiency Conservation/Reuse Water Import/Export Improvement Land Conversion Dry Year Management * New Storage** • BMPs • System Pressurization On Farm Efficiency • Drip Conversion Improvement • Sprinkler conversion SW Delivery Improvement Surrounding Reduced total demand = less pumping Basin Infow/outflow Improvements S F K GS A
Overdraft Reduction Allocation/Targets New Storage Conservation/Reuse Water Import/Export Land Conversion Dry Year • Better use of existing storage Management * • Wet Year Fill New Storage** • Surface Water • Groundwater (aka Recharge) On Farm Efficiency Improvement In order to reduce overdraft, storage volume SW Delivery must be proportional to frequency of wet year Improvement conditions and ability to carry-over Surrounding Basin Increased volume used in-lieu of Infow/outflow Improvements pumping = pumping reduction S F K GS A
Overdraft Reduction Allocation/Targets Dry Year Management Conservation/Reuse Water Import/Export Land Conversion Dry Year • Fallowing – Seasonal crop Management * • Trading – Seasonal --> Permanent New Storage** On Farm Efficiency In order to reduce overdraft, acreage in Improvement fallowing or trading program must be SW Delivery proportional to frequency of dry year Improvement conditions Surrounding Basin Infow/outflow Reduced demand = less pumping Improvements S F K GS A
Overdraft Reduction Allocation/Targets Land Conversion Conservation/Reuse Water Import/Export Land Conversion Dry Year Management * • Permanent retirement (e.g. solar) • Urban/Rural Conversion New Storage** • Short/long term crop conversion On Farm Efficiency Improvement Reduced demand = less pumping SW Delivery Improvement Surrounding Basin Infow/outflow Improvements S F K GS A
Overdraft Reduction Allocation/Targets Water Import/Export Conservation/Reuse Water Import/Export Land Conversion Dry Year Management * • Import more or export less New Storage** • Permanent • Temporary On Farm Efficiency Improvement SW Delivery Improvement Surrounding Basin Infow/outflow Reduces pumping Improvements S F K GS A
Overdraft Reduction Allocation/Targets Conservation/Reuse Conservation/Reuse Water Import/Export Land Conversion Dry Year Management * • Municipal New Storage** • Recreational (e.g. golf course) On Farm Efficiency • Public outreach Improvement SW Delivery • ASR/Indirect Potable Reuse Improvement (IPR) Surrounding Basin Infow/outflow Improvements S F K GS A
Overdraft Reduction Allocation/Targets 100% Conservation/Reuse Water Import/Export 90% Land Conversion 80% Dry Year Management * 70% % Total Pumping New Storage** 60% On Farm 50% Efficiency Improvement 40% SW Delivery 30% Improvement 20% Surrounding Basin 10% Infow/outflow Improvements 0% SFKGSA S F K GS A Overdraft Management Sustainable Yield Overdraft Actions “Menu”
Adaptive Management • 1-year/5-year/10-year reviews Conservation/Reuse Water Import/Export Land Conversion • Data Component Dry Year Management * – GW/SW Monitoring New – Water use Storage** – Water quality On Farm Efficiency – Subsidence Improvement SW Delivery Improvement • “Program” Component – Financial/economic Surrounding Basin – Legal/regulatory Infow/outflow Improvements – Social/Public S F K GS A Overdraft Management Actions “Menu”
Adaptive Management – Mix of actions evolves Water Import/Export Land Conversion Dry Year Management * New Storage** On Farm Efficiency Improvement SW Delivery Improvement Surrounding Basin Infow/outflow Improvements S F K GS A S F K GS A S F K GS A 2020 2030 2040 5% of Goal 45% of Goal 100% of Goal
SFKGSA Implementation Responsibilities • 2-Step Process Conservation/Reuse Water – Overdraft Correction Import/Export Land – Sustainability Management Conversion Dry Year Management * • Overall Approach (GSA) New Storage** – Control versus influence – Carrot versus stick On Farm Efficiency Improvement • Monitoring SW Delivery Improvement – Verifying each contribution to overdraft correction Surrounding – Tools for adaptive management Basin Infow/outflow Improvements S F K GS A
Thank You
Sustainable Yield Allocation 100% Municipal/ 90% Domestic Industrial Riparian 80% Livestock 70% Seasonal % Total Pumping 60% Crop 50% 40% 30% Permane 20% nt Crop 10% 0% 1 SFKGSA Sustainable Yield Allocation Sustainable Yield Overdraft
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