Water Supply and Demand Assessment Historic Trends 1985-2006 Phoenix AMA Water Supply and Demand Assessment Historic Trends 1985-2006 Based on the template as of Friday, October 31st.

Phoenix AMA Demand by Source Demand does not include water stored Groundwater demand = riparian + Indian gw + Ag gw + Ag GSF + Industrial gw + muni Gw CAP: Muni cap + muni recov CAP + indust CAP + indust. Recovered CAP + Ag CAP + total Indian CAP SW Demand: Muni Sw + muni spill + muni recov. Sw + Indust SW + Indust recov sw + Ag SW (Dcap, Nf, Spill, other) + Indian Effluent Demand: Muni Direct use eff + muni recov. Effuent + Indust DU eff + indust recov. Effluent + Ag effluent (3 way exchange, other direct use effluent) + Indian effluent

Phoenix AMA Overdraft Demand numbers here are calculated in the same manner as they were in Slide #2. Deficit = Net natural + Incidental Recharge + GRD Replenishment - gw used GRD Replenishment data source is the Annual spreadsheet, kept by OAWS, called “CAGRD Replenishment District Accounting”

Phoenix AMA Demand by Sector Indian Water Use numbers come from: Annually reported deliveries from SRP GRIC Annual reports where use is split between Pinal and Phx AMA Water Settlement information from Statewide Planning.

Phoenix AMA Exempt wells = Number of exempt wells * 2.67 ppH (Maricopa County Occupancy Rate) * 1 acre foot per person (this is too high and should be fixed). Deliveries to individual users are included here. PVNGS deliveries are not included here.

Phoenix AMA ET and precipitation data came from AZMET website.

Phoenix AMA Other includes G5s (Industrial facilites not regulated by any specific conservation program) plus poor quality permits plus drainage and dewatering permits. Also includes PVNGS (approximately 60K acre feet of effluent per year).

Phoenix AMA Canal and other losses strictly based on Irrigation district annual reports, not an AMA wide or district specific percentage.

Phoenix AMA Groundwater supplies = municipal gw + industrial gw + Ag gwtr + Indian gw + riparian + outflow

Phoenix AMA CAP use here does include CAP GSF deliveries (can be significant for SRP ( almost 30,000 ac feet in 2004 but much less when we have adequate surface water) Water stored by the municipal sector is not included here. Recovered water is included here.

Phoenix AMA Effluent use includes direct and recovered. Industrial use includes PVNGS.

Phoenix AMA Does not include Indian use.

Phoenix AMA Indian Water Use numbers come from: Annually reported deliveries from SRP GRIC Annual reports where use is split between Pinal and Phx AMA Water Settlement information from Statewide Planning.

Phoenix AMA Acre feet axis on left refers to annual storage while acre feet axis on right refers to total credits stored to 2006.