Water Supply Report May 4, 2018

Transcription

1 Water Supply Report May 4, 218

2 BASIN SUPPLIES INFLOWS & OUTFLOWS Total for Year to Date - (acre-feet) Month This Year Last Year Water Purchases from MWD (excludes In Lieu) 42,737 32,92 Water into MWD Storage Account (excludes In Lieu) SAR & Santiago Creek Flows 12,654 69, ,18 (accounts for storage to/from recharge facilities) GWRS Water to Forebay 7,491 63,211 45,852 GWRS Water to Mid-Basin Injection Wells 133 1,17 1,172 GWRS Water to Talbert Barrier 1,266 14,625 25,45 OC-44 Water to Talbert Barrier 13 8 Alamitos Barrier Water Incidental Recharge (estimated) 3,5 27, 49,374 Evaporation from Recharge Basins (215) (2,47) (2,335) River Flow Lost to Ocean (65) (67,933) WATER PRODUCTION WATER RESOURCES SUMMARY March 218 Total Groundwater Recharge 24, ,466 26,16 Groundwater Production 21,16 157, ,333 MWD Storage Program Withdrawals Total Groundwater Production 21,16 157, ,333 BASIN BALANCE Change in Groundwater Storage 3,866 59,249 41,773 Change in Groundwater Storage excluding MWD Stored Water 3,866 59,249 41,773 Accumulated Overdraft , ,228 Accumulated Overdraft excluding MWD Storage , ,43 IN LIEU WATER OCWD In Lieu Purchases (MWD Cyclic Storage) 73,34 MWD In Lieu Storage Total In Lieu 73,34 OTHER KEY INFORMATION 1. MWD Water Deliveries to Producers 4, ,146 49,6 2. Basin Production Percentage 8.9% 79.8% 81.7% 3. Total Water Demand 27,28 31, , Total GWRS Production 8,896 79,9 72,14 5. Green Acres Project Water 144 2,834 2, SAR Water Quality - Total Dissolved Solids (TDS) of SAR below Prado Dam (ppm) Total Nitrogen of SAR below Prado Dam (ppm) Month-End Water Storage Behind Prado Dam , Month-End Water Storage in Recharge Facilities 17, , Water Storage Change in Recharge Facilities 4,3 2,92 1, Total Artificial Recharge 21, ,465 21, Monthly Mean Temperature at Santa Ana Fire Station ( F) Rainfall at FHQ (inches) /12/218

3 3 Orange County Sanitation District Influent Flows Report 25 Flow (MGD) Plant 1 Influent Plant 2 Influent Total Flow Water Demands/Groundwater Pumping/RA Revenue Report Acre-feet (Thousands) Total Water Demand Budgeted Total Pumping Budgeted Total Water Demand Actual Total Pumping Actual Monthly Accumulated Total for the Year Budget Actual Budget Actual Difference Percent Total Water Demand Total Pumping 3,8 27,28 299, 31,583 2, % 24,9 21,16 229,8 157,216-72, % RA Revenue $11,8,5 $9,351,971 $12,261, $69,961,197 -$32,299, % Page 2 of 1

4 Accumulated Overdraft (TAF) (1) (2) (3) (4) Basin Full 1969 Accumulated Overdraft (5) Calendar Year Overdraft w/o MWD Storage Water Overdraft 12 YTD Change in Groundwater Storage in OCWD 1 Change in Storage (TAF) Water Year Page 3 of 1

5 YTD MAR 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 2,994 1,13 4,124 45,24 4, % 72.6% 75.8% 79.6% Buena Park ,911 8, % 87.% 79.3% 8.1% East Orange County % 92.4% 79.% 9.6% Fountain Valley ,487 6, % 69.7% 74.% 96.6% Fullerton 1, ,556 18,933 17,391 19% 78.4% 72.3% 72.% Garden Grove 1, ,645 17,21 15,968 18% 73.9% 71.% 85.6% Golden State 1, ,54 18,157 16,542 11% 9.5% 79.1% 79.2% West OC System ,564 9,915 17% na na na East OC System ,593 6, % na na na Huntington Beach 1, ,916 2,436 18,539 11% 78.7% 77.8% 58.6% Irvine Ranch 3,193 1,21 2 4,46 46,616 44,821 14% 99.9% 99.6% 98.3% DRWF Clear 1, ,712 9,512 2,416 47% na na na DRWF Color ,559 6,427 12% na na na Laguna Beach ,742 2,593 na 47.3% 63.5% 47.4% La Palma ,398 1,565 89% 1.% 1.% 58.7% Mesa Water (MW) 1, ,283 13,347 12,528 17% 97.8% 99.8% 99.2% MW Clear ,541 6,893 51% na na na MW Color ,196 4,877 66% na na na Newport Beach ,15 11,473 9, % 15.8% 77.1% 75.% Orange 1, ,851 2,845 18, % 77.8% 72.1% 84.3% OCWD (GAP) % 1.% 1.% 1.% Santa Ana 2, ,533 26,189 24,447 17% 96.% 74.% 8.9% Seal Beach ,583 2,39 112% 1.% 66.9% 63.8% Serrano ,64 1,78 116% 41.1% 69.9% 76.% Tustin ,149 7, % 98.5% 97.5% 88.6% Westminster ,288 7,623 19% 62.% 74.% 75.5% Yorba Linda ,55 14,987 12,526 12% 7.2% 69.9% 69.6% SUBTOTAL: 2,358 1,298 4,96 26, ,497 27,669 11% 8.9% 79.8% 81.7% Other Producers ,86 6,714 76% (Est ~3% of Subtotal) PRODUCERS WATER USAGE SUMMARY March 218 (AF except BPP) TOTAL: 21,16 1,298 4,966 27,28 31, , % 79.8% 81.7% OCWD (Talbert Barrier) 1,266 1,266 14,638 25,53 OCSD (GAP) na 56 na Estimated (1) Excludes MWD CUP Withdrawals (2) Includes MWD CUP Withdrawals & In Lieu Water 4/12/218 12:25 Page 4 of 1

6 35 Annual Groundwater Production 3 Production (TAF) Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun YTD Total Demand in OCWD 35 3 Total Demand (TAF) Water Year Groundwater MWD+OCWD In Lieu CUP Withdrawals Import Recycled Water Page 5 of 1

7 3 Annual Forebay Recharge 25 Recharge (TAF) Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun YTD Artificial Recharge by OCWD 2 Recharge (TAF) Water Year SAR & Santiago Purchases CUP Direct GWRS Page 6 of 1

8 Remarks RIVER SYSTEM 4, cfs per day average DESILTING SYSTEM OFF-RIVER SYSTEM na 1,525 SAR WARNER SYSTEM 963 SAR OLIVE BASIN - Passive System ANAHEIM LAKE 236 SAR MINI-ANA LAKE na MILLER BASIN 159 SAR KRAEMER BASIN 97 GWRS LA PALMA BASIN MIRA LOMA 5,397 2,93 GWRS LA JOLLA BASIN PLACENTIA BASIN RAYMOND BASIN FIVE COVES BASIN 4 na na BURRIS BASIN RIVER VIEW BASIN FLETCHER BASIN SANTIAGO BASINS SANTIAGO CREEK TOTALS 5-YR AVERAGE FLOWS TO RECHARGE AREAS (AF) LOSSES FROM RECHARGE AREAS (AF) Imperial Headgates (estimated) 16,616 Est'd SAR flow past Chapman Ave. GWRS 7,493 OC-28 (MWD) 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 2 Calc'd evap (inches) Estimated 3.68 Est'd local Santiago inflow (estimated) 1 Est'd evaporative losses 215 Irvine lake releases (OC-13 MWD) Villa Park Dam releases (estimated) Precip at Warner Basin (inches) 3.74 Precip direct to open water surfaces 218 TOTAL INFLOW 24,447 TOTAL LOSSES 215 STORAGE CHANGES (AF) 979 na 3 4,322-19,933 2,321 Facility Begin End Net Deep basins 6,22 6, TOTAL INFLOW 24,447 Santiago Pits 7,195 11,66 3,871 TOTAL LOSSES 215 River STORAGE CHANGE 4,3 Off-river CALC'D PERCOLATION 19,933 Irvine Lake TOTAL 13,218 17,517 4,3 RECHARGE AREAS REPORT March 218 Percolation (AF) SUMMARY (AF) Page 7 of 1

9 DEEP BASINS MONTHLY STATUS March 218 (values in acre-feet) Facility Storage Storage Maximum Total Max Avg Avg W.S. Start End Storage Perc Perc Perc Elev Desilting Ponds na na na na Fos-Huckleberry na na na na Conrock Basin na na na na Warner Basins 2,849 2,86 2, Olive Pit Anaheim Lake , Mini-Anaheim Lk 21 na na na na Miller Basin Kraemer Basin 17 1, La Palma Basin , Mira Loma , La Jolla Basin Placentia Basin 35 na na na na Raymond Basin 37 na na na Five Coves Basins na na na na Burris Pit 1,35 1,95 2, River View Basin 12 na na na na Fletcher Basin 6 3 na na 187 Santiago (Bond) 4,916 7,151 8,69 4, Santiago (Blu Dia) 2,279 3,915 5, Totals 13,218 17,517 26,115 14,876 Prado Dam , Page 8 of 1

10 Cumulative Forebay Rainfall 25 2 Rainfall (Inches) Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun 25-Yr Avg. Rain Temperature at Santa Ana Fire Station Temperature (F ) Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun 15-yr. Avg Page 9 of 1

11 3 3, 2 6, 1 9, -1 3, -2 2, -3 1, Talbert/Lambda Aquifer Mergence Zone Perforated Interval: 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

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13 Orange County Rainfall Report May 2, 218 8:a.m. Costa Mesa Santiago Peak Villa Park Santa Ana AVERAGE LAST YEAR THIS YEAR LAST 24 HRS

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17 ACRE-FEET 6, 5, 4, 3, 2, 1, Jul-17 Fig. 1 OC Water Usage, Monthly by Supply with projection to end of fiscal year Aug-17 Sep-17 Oct-17 Nov-17 6, IRWD&Serrano for IL 6, Dec-17 Jan-18 Surface Water Non-OCWD Groundwater Recycled (Non Potable) projected [3] Import [1] OCWD Basin [2] Rainfall Feb-18 Mar-18 Apr-18 May-18 Jun Rainfall (Inches) [1] Imported water for consumptive use. Includes "In-Lieu" deliveries and CUP water extraction. Excludes "Direct Replenishment" deliveries of spreading water, "Barrier Replenishment" deliveries, and deliveries into Irvine Lake. [2] GW for consumptive use only. Excludes In-Lieu water deliveries and CUP water extraction that are counted with Import. BPP in FY '16-17 is 75%. [3] MWDOC's estimate of monthly demand is based on the projected FY 15-16"Retail" water demand and historical monthly demand patterns. [4] Total water usage includes IRWD groundwater agricultural use and usage by non-retail water agencies.

18 O.C. ACRE-FEET Annual Water Usage (AF) ACRE-FEET 7, 6, 7, 6, 5, 6, 5, 4, 5, 4, 3, 4, 3, 2, 3, 2, 1, 1, 2, 1, - '69 7 Jul-17 Jul Fig. Fig. 1B 2 OC Water Monthly Usage, Water Monthly Usage [1]: by Supply Comparison to Last 4 Fiscal with projection to end of fiscal Years year '71 72 '73 74 Aug-17 '75 76 Aug '77 78 '79 8 Sep Sep-17 '81 82 '83 84 Oct Fig. 1B O.C. Historical Water Usage Oct-17 '85 86 '87 88 Nov '89 9 Nov-17 ' , IRWD&Serrano for IL '93 94 Dec 6, '95 96 Dec-17 '97 98 Jan '99 Jan-18 Feb-18 '1 '3 '5 ' Fiscal Year Feb March 218 FY FY FY FY FY Mar '9 1 Surface Water Non-OCWD Groundwater Recycled (Non Potable) Import [1] OCWD Projected Basin [2] FY Subtotals projected [3] Apr Mar May Apr Jun May Hi, Avg and Low 4, 65 from O.C. Water 6 Reliability Study 3, ACRE-FEET , 6, 5, 2, Jun , Partial Year Average High Temperature (F) YTD Totals 39 4 [1] Sum of Imported water for consumptive use (includes "In-Lieu" deliveries; excludes "Direct Replenishment "and "Barrier Replenishment") and Local water for consumptive use (includes recycled and non-potable water; excludes GWRS production, groundwater pumped to waste, and waste brine from water treatment projects.) Recent months numbers include some estimation.

19 Accumulated Precipitation for the Oct. Sep. water year, through early May 218 This Year to date Average to date Average End of Year % = Percent of Average to Date CA Snowpack on 4/1/218 Colorado Snowpack on 4/3/218 Inches % % 35% 43% 74% 71% ORANGE COUNTY (SANTA ANA) RIVERSIDE (AIRPORT) N. SIERRAS 8 STATION INDEX NORTHERN CALIF. SNOWPACK UPPER BASIN COLORADO PRECIP. UPPER BASIN COLORADO SNOWPACK * The date of maximum snowpack accumulation (April 1st in Northern Calif., April 15th in the Upper Colorado Basin) is used for year to year comparison.

20 prepared by the Municipal Water District of Orange County Million Acre Feet State Water Project, Colorado River, and MWD Reservoir Storage as of April 3, 218 Lake Shasta 92% 17% Million Acre Feet Lake Oroville 69% 84% Million Acre Feet Lake Powell 52% 79% Million Acre Feet San Luis Resv. 87% 97% Lake Mathews 1. 84% Lake Mead Diamond Valley 1. 89%.5. % of Capacity % of Historical Avg Million Acre Feet 4% 56% *Number are Subuject to Change

21 SWP TABLE A ALLOCATION FOR STATE WATER PROJECT CONTRACTORS Final 217:??? 85% 85% 85% Final 217: 85% 1.62 MAF to MWD 45% 6% 6% 45% 6% 6% 6% Final 216: 6% 1.15 MAF to MWD 3% 218: 3%.57 MAF to MWD 3% 15% 2% 2% 2% 2% 2% 2% 15% 15% 2% 15% 1% 1% 15% 2% 1% 1% 15% 5% 5% 5% 5% 5% % % % Nov. Dec. Jan. Feb. Mar. Apr. May Jun. Water Year 214 Water Year 215 Water Year 216 Water Year 217 Water Year 218 Final 215: 2%.38 MAF to MWD Final 214: 5%.9 MAF to MWD

22 3 Historical Colorado Basin April 15th Peak Snow Water Equivalent Snow Water Equivalent (Inches) % 85% 84% 12% 112% 78% 126% 112% 9% 132% 53% Average = 2 Inches 15% 78% 79% 54% 18% 74%

23 6 Historical Northern California April 1st Peak Snow Water Equivalent Snow Water Equivalent (Inches) % 84% 13% 119% 144% 48% 17% 88% 127% 173% 76% 48% Average = 28 Inches 98% 147% 43% % 214 5%

24 Full Accumulated Overdraft of the OCWD Groundwater Basin as of March 218 5, 1, 15, 2, Acre Feet 25, 3, 35, 4, 45, 5, 55, Mar 18 Feb 18 Jan 18 Dec 17 Nov 17 Oct 17 Sep 17 Aug 17 Jul 17 Jun 17 May 17 Apr 17 Mar 17 Feb 17 Jan 17 Dec 16 Nov 16 Oct 16 Sep 16 Aug 16 Jul 16 Jun 16 May 16 Apr 16 Mar 16 Feb 16 Jan 16 Dec 15 Nov 15 Oct 15 Sep 15 Aug 15 Jul 15 Jun 15 May 15 Apr 15 Mar 15 Feb 15 Jan 15 Dec 14 Nov 14 Oct 14 Sep 14 Aug 14 Jul 14 Jun 14 May 14 Apr 14 Mar 14 Feb 14 Jan 14 Dec 13 Nov 13 Oct 13 Sep 13 Aug 13 Jul 13 Accumulated Overdraft (AO) Threshold for Mitigation Against Increasing AO AO with CUP Removed Bottom of Basin Operating Range Jul 16 Aug 16 Sep 16 Oct 16 Nov 16 Dec 16 Jan 17 Feb 17 Mar 17 Apr 17 May 17 Jun 17 AO (AF) 376,31 381,8 43,47 45,635 48,729 46, , ,4 299, , ,468 31,434 AO w/cup removed (AF) 376, ,34 43,223 45,811 48,96 47,9 383, ,4 299, , ,9 312,164 Jul 17 Aug 17 Sep 17 Oct 17 Nov 17 Dec 17 Jan 18 Feb 18 Mar 18 Apr 18 May 18 Jun 18 AO (AF) 38, ,131 36,28 29,8 277, ,56 261, , ,752 AO w/cup removed (AF) 31, ,131 38,7 292, , , , ,188 27,463 Source of data = OCWD monthly Water Resources Report in Board meeting packet

25 Lake Mead Levels: Historical and Projected projection per USBR 24 Month Study Historical Projected 1,225 1,2 Spillway Elevation = 1,221 ft Elevation (Ft) 1,175 1,15 1,125 Surplus Trigger = 1,145 ft 1,1 Shortage Trigger = 1,75 ft 1,75 1,5 Jan 2 Jan 3 Jan 4 Jan 5 Jan 6 Jan 7 Jan 8 Jan 9 Jan 1 Jan 11 Jan 12 Jan 13 Jan 14 Jan 15 Jan 16 Jan 17 Jan 18 Jan 19 Jan 2

26 Lake Powell Levels: Historical and Projected projection per USBR 24 Month Study Historical Projected 3,75 Spillway Elevation = 3,715 ft 3,68 3,655 Elevation (Ft) 3,63 3,65 3,58 3,555 3,53 Jan 2 Jan 3 Jan 4 Jan 5 Jan 6 Jan 7 Jan 8 Jan 9 Jan 1 Jan 11 Jan 12 Jan 13 Jan 14 Jan 15 Jan 16 Jan 17 Jan 18 Jan 19 Jan 2