BASIN SUPPLIES INFLOWS & OUTFLOWS Total for Year to Date - (acre-feet) Month This Year Last Year Water Purchases from MWD (excludes In Lieu) 7,75 23,96 26,945 Water into MWD Storage Account (excludes In Lieu) SAR & Santiago Creek Flows 5,551 14,666 16,336 (accounts for storage to/from recharge facilities) GWRS Water to Forebay 1,279 19,13 GWRS Water to Mid-Basin Injection Wells 27 394 GWRS Water to Talbert Barrier 1,846 7,267 7,166 OC-44 Water to Talbert Barrier 3 15 Alamitos Barrier Water 19 416 268 Incidental Recharge (estimated) 1,6 4,8 9, Evaporation from Recharge Basins (345) (1,183) (1,184) River Flow Lost to Ocean WATER PRODUCTION WATER RESOURCES SUMMARY September 218 Total Groundwater Recharge 16,594 6,427 77,938 Groundwater Production 26,699 88,998 6,555 MWD Storage Program Withdrawals Total Groundwater Production 26,699 88,998 6,555 BASIN BALANCE Change in Groundwater Storage (1,15) (28,571) 17,383 Change in Groundwater Storage excluding MWD Stored Water (1,15) (28,571) 17,383 Accumulated Overdraft ------ 35,572 31,618 Accumulated Overdraft excluding MWD Storage ------ 37,271 312,342 IN LIEU WATER OCWD In Lieu Purchases (MWD Cyclic Storage) 27,8 MWD In Lieu Storage Total In Lieu 27,8 OTHER KEY INFORMATION 1. MWD Water Deliveries to Producers 8,6 26,538 51,917 2. Basin Production Percentage 76.8% 77.% 77.9% 3. Total Water Demand 36,187 12,236 117,53 4. Total GWRS Production 1,846 17,784 26,65 5. Green Acres Project Water 344 1,49 1,44 6. SAR Water Quality - Total Dissolved Solids (TDS) of SAR below Prado Dam (ppm) 662 ------ 676 - Total Nitrogen of SAR below Prado Dam (ppm) 4.2 ------ 4.9 7. Month-End Water Storage Behind Prado Dam ------ 1 8. Month-End Water Storage in Recharge Facilities 9,228 ------ 11,32 9. Water Storage Change in Recharge Facilities (1,424) (3,351) (3,277) 1. Total Artificial Recharge 14,994 55,627 68,938 11. Monthly Mean Temperature at Santa Ana Fire Station ( F) 73.9 ------ 75.2 12. Rainfall at FHQ (inches)...3 *** Note: Data are preliminary, subject to change 1/11/218
3 Orange County Sanitation District Influent Flows Report 25 Flow (MGD) 2 15 1 5 Plant 1 Influent Plant 2 Influent Total Flow 23 24 25 26 27 28 29 21 211 212 213 214 215 216 217 218 219 5 217-18 Water Demands/Groundwater Pumping + In Lieu/RA Revenue Report Acre-feet (Thousands) 4 3 2 1 Total Water Demand Budgeted Total Pumping Budgeted Total Water Demand Actual Total Pumping Actual + In Lieu Monthly Accumulated Total for the Year Budget Actual Budget Actual Difference Percent Total Water Demand Total Pumping + In Lieu 41,1 36,187 127,1 12,236-6,864 94.6% 31,7 26,699 97,1 88,998-8,12 91.66% RA Revenue $14,16,5 $11,881,33 $43,29,5 $39,64,249 -$3,65,251 91.66% Page 2 of 1
Accumulated Overdraft (TAF) (1) (2) (3) (4) Basin Full 1969 Accumulated Overdraft (5) 1969 1974 1979 1984 1989 1994 1999 24 29 214 219 Calendar Year Overdraft w/o MWD Storage Water Overdraft 6 YTD Change in Groundwater Storage in OCWD Change in Storage (TAF) 4 2-2 -4-6 -8 99- -1 1-2 2-3 3-4 4-5 5-6 6-7 7-8 8-9 9-1 1-11 11-12 12-13 13-14 14-15 15-16 16-17 17-18 18-19 Water Year Page 3 of 1
218-19 217-18 YTD SEP 218-19 217-18 WATER Ground- In Reclaimed Total Total YTD YTD % Diff 218 YTD YTD AGENCY water (1) Lieu Water Import (2) Demand Demand Demand Demand BPP BPP BPP Anaheim 3,529 1,857 5,386 17,6 17,783 96% 65.5% 73.1% 77.8% Buena Park 1,25 223 1,247 4,83 3,996 12% 82.2% 82.1% 73.4% East Orange County 97 97 34 255 119% 1.% 55.7% 89.4% Fountain Valley 799 9 889 2,972 3,82 96% 1.% 1.% 78.8% Fullerton 1,922 545 2,467 7,996 7,771 13% 77.9% 77.5% 79.1% Garden Grove 1,643 49 2,133 6,982 6,46 18% 77.% 74.1% 7.7% Golden State 2,48 458 2,56 7,85 6,92 114% 81.7% 75.6% 69.7% West OC System 1,3 - - 9 1,39 4,216 4,6 14% na na na East OC System 748 - - 449 1,197 3,635 2,842 128% na na na Huntington Beach 1,614 898 2,512 8,176 7,943 13% 64.2% 59.6% 72.6% Irvine Ranch 2,376 1,164 7 3,61 15,65 16,687 94% 97.1% 98.3% 99.% DRWF Clear 622 - - - 622 6,345 2,792 227% na na na DRWF Color 77 - - - 77 2,111 2,19 96% na na na Laguna Beach 185 146 331 1,57 1,53 na 55.9% 49.3% 69.7% La Palma 172 172 556 527 16% 1.% 1.% 1.% Mesa Water (MW) 1,54 93 9 1,686 5,49 5,313 12% 94.4% 95.3% 1.% MW Clear 789 - - - 789 2,636 1,485 178% na na na MW Color 715 - - - 715 2,183 1,577 138% na na na Newport Beach 1,187 57 246 1,49 4,881 4,625 16% 82.9% 73.7% 8.5% Orange 2,56 61 2,667 8,536 8,25 14% 77.1% 74.5% 66.5% OCWD (GAP) 186 186 64 3 2133% 1.% 1.% 1.% Santa Ana 2,14 24 1,132 3,169 1,148 9,728 14% 64.% 65.4% 61.8% Seal Beach 336 336 1,72 1,1 16% 1.% 58.7% 25.2% Serrano 247 286 533 1,457 87 167% 46.3% 52.6% 85.3% Tustin 894 126 1,2 3,266 3,21 12% 87.6% 85.% 91.% Westminster 749 242 991 3,173 3,88 13% 75.6% 78.6% 77.6% Yorba Linda 1,377 63 2,7 6,568 6,149 17% 68.6% 68.3% 7.% SUBTOTAL: 25,959 1,428 8,5 35,437 117,736 114,688 13% 76.3% 77.% 77.9% Other Producers 74 1 75 2,499 2,815 89% (Est ~3% of Subtotal) PRODUCERS WATER USAGE SUMMARY September 218 (AF except BPP) TOTAL: 26,699 1,428 8,6 36,187 12,236 117,53 76.3% 77.% 77.9% OCWD (Talbert Barrier) 1,846 3 1,848 7,282 7,166 OCSD (GAP) na 58 na 58 327 11 Estimated (1) Excludes MWD CUP Withdrawals (2) Includes MWD CUP Withdrawals & In Lieu Water 1/11/218 13:28 Page 4 of 1
35 Annual Groundwater Production 3 Production (TAF) 25 2 15 1 5 Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun 216-17 217-18 218-19 18 YTD Total Demand in OCWD 16 14 Total Demand (TAF) 12 1 8 6 4 2 99- -1 1-2 2-3 3-4 4-5 5-6 6-7 7-8 8-9 9-1 1-11 11-12 12-13 13-14 14-15 15-16 16-17 17-18 18-19 Water Year Groundwater MWD+OCWD In Lieu CUP Withdrawals Import Recycled Water Page 5 of 1
3 Annual Forebay Recharge 25 Recharge (TAF) 2 15 1 5 Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun 216-17 217-18 218-19 9 YTD Artificial Recharge by OCWD 8 7 Recharge (TAF) 6 5 4 3 2 1 99- -1 1-2 2-3 3-4 4-5 5-6 6-7 7-8 8-9 9-1 1-11 11-12 12-13 13-14 14-15 15-16 16-17 17-18 18-19 Water Year SAR & Santiago Purchases CUP Direct GWRS Page 6 of 1
Remarks RIVER SYSTEM 2,662 45 cfs per day average DESILTING SYSTEM OFF-RIVER SYSTEM 114 SAR WARNER SYSTEM 93 SAR OLIVE BASIN - ANAHEIM LAKE 497 MET-CRA, started dewatering 9-11-18 for maintenance MINI-ANA LAKE 113 MET-CRA MILLER BASIN 2,86 MET-CRA KRAEMER BASIN 4,926 MET-CRA LA PALMA BASIN MIRA LOMA No GWRS flow due to pipelining project LA JOLLA BASIN PLACENTIA BASIN RAYMOND BASIN FIVE COVES BASIN 753 na 527 na BURRIS BASIN RIVER VIEW BASIN FLETCHER BASIN SANTIAGO BASINS SANTIAGO CREEK TOTALS 5-YR AVERAGE RECHARGE AREAS REPORT September 218 Percolation (AF) 169 - - 179-12,956 2,321 FLOWS TO RECHARGE AREAS (AF) LOSSES FROM RECHARGE AREAS (AF) Imperial Headgates (estimated) 3,878 Est'd SAR flow past Chapman Ave. GWRS OC-28 (MWD) 7,75 Est'd Santiago Cr. flow to SAR OC-28a (MWD) Est'd flows past Raymond Basin CB-11 CB-18 Est'd local Forebay inflow below Imperial 249 Calc'd evap (inches) Estimated 5.92 Est'd local Santiago inflow (estimated) Est'd evaporative losses 345 Irvine lake releases (OC-13 MWD) Villa Park Dam releases (estimated) Precip at Warner Basin (inches) Precip direct to open water surfaces TOTAL INFLOW 11,877 TOTAL LOSSES 345 STORAGE CHANGES (AF) Facility Begin End Net Deep basins 6,875 5,797-1,78 TOTAL INFLOW 11,877 Santiago Pits 3,778 3,431-346 TOTAL LOSSES 345 River STORAGE CHANGE -1,424 Off-river CALC'D PERCOLATION 12,956 Irvine Lake TOTAL 1,653 9,228-1,424 SUMMARY (AF) Page 7 of 1
DEEP BASINS MONTHLY STATUS September 218 (values in acre-feet) Facility Storage Storage Maximum Total Max Avg Avg W.S. Start End Storage Perc Perc Perc Elev Desilting Ponds 23 23 23 114 na na na Fos-Huckleberry 52 518 63 na na na na Conrock Basin 499 552 66 na na na na Warner Basins 2,82 2,792 2,81 93 na na 238 Olive Pit 183 na Anaheim Lake 1,34 2,3 497 44 17 184 Mini-Anaheim Lk 7 21 113 2 4 221 Miller Basin 75 34 2,86 12 7 28 Kraemer Basin 89 866 1,5 4,926 187 164 211 La Palma Basin 15 na na na Mira Loma 62 na na na La Jolla Basin 16 16 36 753 28 25 23 Placentia Basin 35 na na na na Raymond Basin 2 175 37 527 na na na Five Coves Basins 35 na na na na Burris Pit 74 573 2,67 169 9 6 15 River View Basin 12 - na na na Fletcher Basin 6 - na na na Santiago (Bond) 2,715 2,45 8,69 179 na na 21 Santiago (Blu Dia) 1,63 1,26 5,24 - - - - Totals 1,653 9,228 26,115 1,294 Prado Dam 25, Page 8 of 1
Cumulative Anaheim Field HQ Rainfall 25 2 Rainfall (Inches) 15 1 5 Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Avg. Rain Since 1986 217-18 218-19 8 Temperature at Santa Ana Fire Station Temperature (F ) 75 7 65 6 55 Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun 15-yr. Avg. 217-18 218-19 Page 9 of 1
3 3, 2 6, 1 9, -1 3, -2 2, -3 1, -4 27 28 29 21 211 212 213 214 215 216 217 218 219 Talbert/Lambda Aquifer Mergence Zone Perforated Interval: 71-135 ft. bgs Fountain Valley Groundwater Production Talbert Barrier Injection Mesa Water Groundwater Production Protective Level to Prevent Seawater Intrusion Huntington Beach Groundwater Production Talbert Barrier Injection (A-ft) Water Level Elevation (Feet MSL) Groundwater Production (A-ft) TALBERT BARRIER MONITORING WELL OCWD-M26 4 IRWD Groundwater Production Newport Beach Groundwater Production Page 1 of 1