Storage Tanks — 4.0 MG Combined
BIRDS HILL
100ft ⌀ · 45ft H
100ft ⌀ · 45ft H
78%
1.95 MG
DUNSTER RD
55ft ⌀ · 85ft H
55ft ⌀ · 85ft H
64%
0.96 MG
Charles River Wellfield — 3 Active Wells
MWRA 36" Backup + St. Mary's Booster
MWRA 36" MAIN
METROWEST TUNNEL → ST. MARY ST · CENTRAL AVE
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MWRA FLOW RATE0.00 MGD
ST. MARY'S BOOSTER
CENTRAL AVE · AUTO-COUPLES WITH MWRA
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Zone Isolation Valves (3,400 system-wide)
3.24
DEMAND MGD
3.80
WELL OUTPUT MGD
68
AVG PRESSURE PSI
1,245
HYDRANTS ACTIVE
30K+
RESIDENTS SERVED
Needham Distribution Network
24-Hour Demand Curve (MGD) · Today vs Forecast
System Pressure Trend — 6-Hour Rolling (PSI)
Charles River — USGS Live Feed
SITE 01104200 · WELLESLEY, MA
waterdata.usgs.gov ↗
waterdata.usgs.gov ↗
STATUS
Fetching USGS data…
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AI OVERNIGHT AUTO-FILL
DEMAND PREDICTOR · SCHEDULE OPTIMIZER · NEEDHAM DPW
TONIGHT'S PUMP SCHEDULE
10 PM
WELL-1 55%
12 AM
WELLS 70%
01 AM
WELLS 100%
03 AM
MWRA SUPP.
05:30
TARGET ✓
06 AM
RAMP DOWN
Pattern analysis: Tuesday AM peak (2.1× baseline) expected. Pre-charging both tanks prevents Zone 4 pressure falling below 40 PSI. MassDEP hard minimum: 20 PSI. MWRA supplement staged at 3 AM if wells insufficient.
What-If Scenario Simulator
Live Zone Pressure Gauges
72
PSI
NORTH
68
PSI
CENTRAL
61
PSI
SOUTH
System Event Log
05:42AI Auto-Fill schedule loaded for 22:00–06:00 cycle
04:15Birds Hill refilled to 78% — overnight cycle complete
02:30Well #2 adjusted to 95% — MWRA supplement not needed
00:05All zones above 40 PSI — system nominal