AZ vs. CA:12 California Exhibits, Vol. XII; Nos. 1350-1383; 1400-1446; 1501-1518; 1601-1603; 1701-1703

page 106

Average annual inflow to area: (Mean 1922 to 1933) Gila at Kelvin 313,000 acre feet Salt at Granite Reef l,ll_j.6,000 " Unmeasured Inflow (l) 235,000 " Draft on water table (2) 91,000 " Total Average Inflow 1*785*000 acre feet Average annual outflow from area: (Mean 1922 to 1933) Gila below Gillespie Dam l^l+jOOO acre feet Diversions at Gillespie Dam (3) 26,000 " Total Average Outflow 460,000 acre feet Average annual loss and use in Phoenix Area 1,325*000 acre feet Average annual original River losses in Phoenix Area (U) i4-97,OOO " Average annual depletion River water due to irrigation development, representing use, 828,000 in addition to original losses. Average irrigated acreage Phoenix area 390,000 acres Average annual depletion of river water due to irrigation (5) 2.12 acre feet per acre irrigated (1) By comparison of Verde flow at the mouth the average flow from unmeasured tributaries is estimated at 9h% of the long time average. (2) Data prepared by McDonald, chief hydrographer, Salt River Val- ley Water Users Association. (Report appended to Report of T. A. Hayden August 26, 1933* on Water Supply Salt River Project) shows average lowering 1.9 ft. per year on Salt River Project. This lowering estimated to be effective on 1^.00,000 acres. Assumed drainage factor 12/&. (3) Estimated diversions by Gillespie Canal and unmeasured release through Dam (small'amounts) for downstream prior rights. Estimated off-hand, from general knowledge of conditions. (U) Estimated by applying data in Table 31» for "the years 1922 to 1933, to Plate 10. (5) 828,000 divided by 390,000. 106