Massachusetts Water Resources Authority Water Supply and Source - PowerPoint PPT Presentation

Massachusetts Water Resources Authority

Water Supply and Source Water Management System Yield 860 560 MGD 260 -40 Mar-12 Jun-12 Sep-12 Dec-12 Mar-13 Monthly Yield Long-Term Average

Water Supply and Source Water Management Quabbin Reservoir Levels With Drought Emergency Planning Stages 100 Normal 80 Below Normal Percent Full Warning 60 Below ~55% Drought Emergency Stage 1 40 Below 38% Drought Emergency Stage 2 20 Below 25% Drought Emergency Stage 3 0 Jan-00 Jan-02 Jan-04 Jan-06 Jan-08 Jan-10

Water Supply and Source Water Management Water Transfers/Diversions 400 300 MGD 200 100 0 Mar-12 Jun-12 Sep-12 Dec-12 Mar-13 Quabbin to Wachusett (Transfer) Ware to Quabbin (Diversion)

Quabbin Aqueduct Tunnel Profile

Quabbin Aqueduct Tunnel

Shaft 8 – Lonergan I ntake on the Ware River

Lonergan I ntake Building

Lonergan I ntake

Lonergan I ntake Screens

Ware River Diversion

Shaft 11A Outlet and Shaft 12 Quabbin I ntake

Shaft 11A – Ware River Diversion I nto Quabbin

Water Distribution System Valves Main Line Valves Exercised 1500 FY13 Target = 1,100 1250 # of valves 1000 750 500 250 0 J A S O N D J F M A M J

Water Distribution System Valves 700 Blow-Off Valves Exercised 600 500 # of Valves FY13 Target = 500 400 300 200 100 0 J A S O N D J F M A M J

Deer I sland Operations 30 60% Sludge Detention Time in Digesters 28 58% and Total Solids Destruction 25 23 55% % TS Destroyed 20 53% 18 # Days 15 50% 13 48% 10 8 45% 5 43% 3 0 40% J A S O N D J F M A M J Detention Time, #Days 3 Yr Avg Detention Time, #Days Total Solids Destroyed, % 3 Yr Avg Total Solids Destroyed, %

Deer I sland Operations Digester Gas Production and % Utilized 220,000 100% 98% 210,000 95% 200,000 93% DiGas, SCFH % Utilized 190,000 90% 180,000 88% 85% 170,000 83% 160,000 80% 150,000 78% 140,000 75% J A S O N D J F M A M J Avg Daily DiGas Produced, SCFH 8 Yr Avg Daily DiGas Produced, SCFH % DiGas Utilized