WATER SHORTAGE RESPONSE PLAN

Transcription

1 WATER SHORTAGE RESPONSE PLAN Utility Advisory Committee 10 March 2015 Philip D. Lusk Deputy Director for Power and Telecommunication Systems Department of Public Works & Utilities City of Port Angeles, WA

2 Water Shortage Declaration The City could declare a shortage in 2015 due to low snow pack and other factors in the Elwha River watershed Three City water shortage declarations since 2002 Stage 2 declaration on July 8, 2003 Reason: Peabody Heights Reservoir taken out of service Stage 3 declaration on September 25, 2005 Reason: Low Elwha River flows Stage 2 declaration on September 26, 2006 Reason: Low Elwha River flows

3 Water Shortage Response Plan Water Shortage Response Plan Stages Stage I Staff alerted that a water conservation promotional campaign may be needed. Stage II Voluntary conservation. Begin public information campaign. Stage III Outdoor restrictions. Voluntary sprinkling restrictions. Intensive public information. Stage IV Mandatory outdoor restrictions. Essential water uses only. Stage V Water rationing.

4 The peninsula s largest watershed 321 square miles of drainage and 70 miles of river tributaries The City obtains its drinking water from two sources A Ranney collector well or from the lower Elwha Water Treatment Plant 4

5 Water Conservation Program The water conservation program has two components to decrease City water use: Supply-side measures for system efficiency Demand-side measures for water conservation Free devices such as low flow showerheads, low flow faucet aerators, and water saving dams for toilets Rebates for downspout disconnects and rain garden installation Working to provide rebates for water-efficient toilets, rain barrels, watering timers, and soil moisture meters

6 20,000 Elwha River Mean Daily Discharge 18,000 16,000 14,000 Cubic Feet per Second 12,000 10,000 8,000 6,000 4,000 2,000 AVERAGE 0 Jan-03 Jan-04 Jan-05 Jan-06 Jan-07 Jan-08 Jan-09 Jan-10 Jan-11 Jan-12 Jan-13 Jan-14 Jan-15 6

7 100,000 Elwha River Mean Daily Discharge (log 10 scale) 10,000 Cubic Feet per Second AVERAGE 1, Jan-03 Jan-04 Jan-05 Jan-06 Jan-07 Jan-08 Jan-09 Jan-10 Jan-11 Jan-12 Jan-13 Jan-14 Jan-15 7

8 100,000 Elwha River Daily Flow ( in log 10 scale) 10,000 Cubic Feet per Second 1, Jan 20-Feb 10-Apr 30-May 19-Jul 7-Sep 27-Oct 16-Dec

9 100,000 Elwha River Daily Flow ( in log 10 scale) 10,000 Cubic Feet per Second 1, Jan 20-Feb 10-Apr 30-May 19-Jul 7-Sep 27-Oct 16-Dec Maxium Average Minimum 9

10 100,000 Elwha River Daily Flow During Critial Months ( in log 10 scale) 10,000 Cubic Feet per Second 1, Jun 21-Jun 11-Jul 31-Jul 20-Aug 9-Sep 29-Sep 19-Oct 8-Nov Maxium Average Minimum 10

11 8.00 City of Port Angeles Daily Water Consumption Cubic Feet per Second /01/03 01/01/04 01/01/05 01/01/06 01/01/07 01/01/08 01/01/09 01/01/10 01/01/11 01/01/12 01/01/13 01/01/14 01/01/15 11

12 10,000 Elwha River Flow vs City Water Consumption ( Mean Daily Comparison During Critial Months in log 10 scale) 1,000 Cubic Feet per Second Jun 21-Jun 11-Jul 31-Jul 20-Aug 9-Sep 29-Sep 19-Oct 8-Nov Minimum Elwha River Flow Maximum City Water Consumption 12

13 100% Elwha River Flow vs City Water Consumption ( Percetage Daily Comparison During Critial Months) 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% 1-Jun 4-Jun 7-Jun 10-Jun 13-Jun 16-Jun 19-Jun 22-Jun 25-Jun 28-Jun 1-Jul 4-Jul 7-Jul 10-Jul 13-Jul 16-Jul 19-Jul 22-Jul 25-Jul 28-Jul 31-Jul 3-Aug 6-Aug 9-Aug 12-Aug 15-Aug 18-Aug 21-Aug 24-Aug 27-Aug 30-Aug 2-Sep 5-Sep 8-Sep 11-Sep 14-Sep 17-Sep 20-Sep 23-Sep 26-Sep 29-Sep 2-Oct 5-Oct 8-Oct 11-Oct 14-Oct 17-Oct 20-Oct 23-Oct 26-Oct 29-Oct 1-Nov 4-Nov 7-Nov 10-Nov Maximum City Water Consumption Minimum Elwha River Flow 13

14 10% Elwha River Flow vs City Water Consumption ( Percentage Daily ZOOM Comparison During Critial Months) 9% 8% 7% 6% 5% 4% 3% 2% 1% 0% 1-Jun 4-Jun 7-Jun 10-Jun 13-Jun 16-Jun 19-Jun 22-Jun 25-Jun 28-Jun 1-Jul 4-Jul 7-Jul 10-Jul 13-Jul 16-Jul 19-Jul 22-Jul 25-Jul 28-Jul 31-Jul 3-Aug 6-Aug 9-Aug 12-Aug 15-Aug 18-Aug 21-Aug 24-Aug 27-Aug 30-Aug 2-Sep 5-Sep 8-Sep 11-Sep 14-Sep 17-Sep 20-Sep 23-Sep 26-Sep 29-Sep 2-Oct 5-Oct 8-Oct 11-Oct 14-Oct 17-Oct 20-Oct 23-Oct 26-Oct 29-Oct 1-Nov 4-Nov 7-Nov 10-Nov Maximum City Water Consumption Minimum Elwha River Flow 14

15 10% Elwha River Flow vs City Water Consumption ( Percentage Daily ZOOM Comparison During Critial Months) 9% 8% 7% 6% 5% 4% 3% 2% 1% 0% 1-Jun 4-Jun 7-Jun 10-Jun 13-Jun 16-Jun 19-Jun 22-Jun 25-Jun 28-Jun 1-Jul 4-Jul 7-Jul 10-Jul 13-Jul 16-Jul 19-Jul 22-Jul 25-Jul 28-Jul 31-Jul 3-Aug 6-Aug 9-Aug 12-Aug 15-Aug 18-Aug 21-Aug 24-Aug 27-Aug 30-Aug 2-Sep 5-Sep 8-Sep 11-Sep 14-Sep 17-Sep 20-Sep 23-Sep 26-Sep 29-Sep 2-Oct 5-Oct 8-Oct 11-Oct 14-Oct 17-Oct 20-Oct 23-Oct 26-Oct 29-Oct 1-Nov 4-Nov 7-Nov 10-Nov Average City Water Consumption Average Elwha River Flow 15

16 Water Shortage Response Plan Summary A water shortage could be declared in 2015 Most likely to occur in mid- to late-september Most likely a response to efforts to preserve fish spawning habitat Compared to declared shortages, less likely to occur and to have smaller impacts Most likely no impact on Seasonal Water Usage Program Summer (1 June to 31 August) uniform consumption rate Recommendations Consider official Stage 1 water shortage declaration Develop prescriptive standards for water shortage declarations Continue and expand water conservation program

17 Phil Lusk Deputy Director of Power and Telecommunications Systems Public Works & Utilities Department