NFRWSP: Conservation/Irrigation Efficiency Methods Briefing Jennifer Gihring SJRWMD February 17, 2015
Water Supply Plan Projected Demand - Estimated Conservation Potential = Net Demand Net Demand Water Available From Traditional Sources - = Alternative Water Supply Projects Needed
Why account for conservation/irrigation efficiency in water supply planning? Means to decrease future demands and reduce the need for alternative water supplies and water resource development. Reduce Demands Extend Available Water Supply Sources
Conservation/Irrigation Efficiency by Use Category Category PS, DSS, & CII Conservation Potential AG Irrigation Efficiency Tool FAWCET with Residential Indoor & Outdoor BMPs and Commercial Indoor BMPs Direct MIL Method LRA, M/D, PG Not calculated
Conservation and Irrigation Efficiency SAC briefed on conservation tools in July 2013 BMPs in the tools help quantify potential conservation & irrigation efficiency. They do not require or limit what water users choose to implement.
Conservation Potential Tool: FAWCET Florida Automated Water Conservation Estimation Tool (FAWCET) Analyzes conservation potential (volume & cost) for indoor residential use, outdoor use, and publicly supplied commercial uses Optimization can run to meet different goals: volume, gpcd, or budget.
How FAWCET Works Join account-level data from utilities to property appraiser parcels. Use account-level data to generate residential load profiles relative to property characteristics. Set starting assumptions/constraints. Linear programming optimization to select the most cost effective BMPs.
Account-Level Data in FAWCET
FAWCET Single Family Indoor Load Profiles 50% 45% Percent of Accounts/Utility (Weighted Average) 40% 35% 30% 25% 20% 15% 10% 5% 0% 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 Gallons/Month
Extrapolating from Load Profiles to Parcels County Property Appraiser Data + 2010 Census + Block Data Load Profiles (from Utility Billing Data) 1. Physical Address 2. Parcel ID 3. DOR Code 4. Just Value 5. Land Square Footage 6. Actual Year Built 7. Total Heated Area 8. Number of Buildings 9. Number of Res Units 1. Avg. HH Population 1. Location ID 2. Meter Size 3. Service Address 4. Parcel ID 5. GIS Join ID 6. Service Type 7. Billing Class 8. Monthly Consumption Scale is key
How FAWCET Works Parcel Data Model input assumptions Optimization tool Summary Report Table and map containing BMP selection, savings, & cost by parcel
Conservation Potential: FAWCET BMPs Indoor Residential Replacement of toilets, showerheads, and faucets Commercial Indoor Spray valves, toilets, showerheads, faucets, & urinals Outdoor Irrigation system audits and improvements Soil moisture sensors
FAWCET Assumptions for NFRWSP Florida Water Star specifications for plumbing fixture BMPs BMP cost limit of $3.00/1,000 gallons BMP participation rate - CFWI values as default; soliciting data from NF utilities/local governments for refinement GPCD constraint - TBD
Example FAWCET Output l
FAWCET: Next Steps Complete initial FAWCET runs in progress. Districts will evaluate and refine draft runs. Conduct revised FAWCET runs. Apply FAWCET runs to projections. Distribute to SAC. Expect to distribute results with revised values in March.
Irrigation Efficiency: Concept For an established 2035 crop scenario (acres/crop type): How much water is used grow those crops with current practices? How much less water would it take to grow those same crops with increased investment in irrigation efficiency BMPs?
Irrigation Efficiency: Tools Direct Mobile Irrigation Lab (MIL) Method Preferred method for NFRWSP Based on measured ag water efficiency data collected by FDACS Florida Automated Ag Resource Model (FAARM) Optimization tool similar to FAWCET Currently in beta status
Irrigation Efficiency: Direct MIL Method Water savings/acre derived for various crops from MIL data Use actual values from post-implementation visits for farms that have implemented BMPs Crops summarized into crop categories Savings/acre multiplied by the 2035 acreage projection and participation rate(s) Provides potential savings (mgd); does not provide cost
Irrigation Efficiency: Direct MIL Example (Central Florida) Net Irrigation Efficiency Potential 10% Participation = 6.8 mgd 50% Participation = 34 mgd 100% Participation = 68 mgd
Direct MIL Details for NFRWSP Created common crop categories for both SRWMD and SJRWMD Revised MIL values with North Floridaspecific data, where available Will report range of values reflecting variable participation rate
Irrigation Efficiency: NFRWSP MIL Data Tree Crops Vegetables Nursery Blueberries & Grapes Field Crops Sod, Pasture, & Grass Citrus Misc. Fruit & Nut Peaches Pecans Cabbage Carrots Cucumbers Melons Peppers Strawberries Watermelons Misc. Vegetables Nursery (Open Field) Ornamentals (Container/ Field Grown) Ferns Blueberries Grapes Beans Corn (all) Cotton Misc/Other Field Crops Peanuts Peas Potatoes Soybeans Tobacco Improved Pasture Sod Note: May shift some crops to be consistent with final ag projections
Irrigation Efficiency: NFRWSP MIL Data by Crop Category Tree Crops Vegetables Nursery Blueberries & Grapes Field Crops Sod, Pasture, & Grass Statewide Values SRWMD Statewide Values Statewide Values SRWMD Statewide Values Status SR drafted values SJR reviewed and concurred
Irrigation Efficiency: Next Steps Finalize MIL input values (SJR & FDACS review) Finalize ag acreage projections & crop categories Apply MIL water savings/acre to projections District/FDACS review SAC review & recommendation
NFRWSP: Conservation and Irrigation Efficiency Questions?