Newport Comprehensive Land Use Plan - Existing Conditions | Page 181
13 Infrastructure & Water Supply
Table 13-1 - NWD’s Surface Water Reservoirs
Reservoir
Location
Watson Reservoir
Little Compton
Nonquit Pond
Storage Capacity (MG)
Usable Storage (MG)
1755.1
1677.4
Tiverton
565.3
403.0
St. Mary's Pond
Portsmouth
205.5
189.0
Sisson Pond
Portsmouth
117.0
117.0
Lawton Valley Reservoir
Portsmouth
421.6
421.6
North & South Easton Ponds
Newport
685.1
650.8
Gardiner and Paradise Ponds
Middletown
526.2
458.9
Source: Newport Water Division Water Supply System Management Plan 2014
The water collected from these nine reservoirs is then distributed to two different water treatment plants (WTPs)
located on Aquidneck Island. The two WTPs are Station 1 and the Lawton Valley Water Treatment Plant. Station 1 is
located in Newport and has a total treatment capacity of nine million gallons per day (MGD). The Lawton Valley
Water Treatment Plant (LVWTP), which has a total treatment capacity of seven MGD, is located in Portsmouth. These
two plants combined give the Newport Water Division a total daily capacity of 16 million gallons.
The 2012 figures for daily water consumption were far below the system’s maximum capacity. Table 13-2 details
these statistics.
Table 13-2 - System Wide Water Demand for 2012 (Measured in Million Gallons Daily)
Year
Average Day Demand (ADD)
Maximum Day Demand (MDD)
2012
5.83
9.70
Source: Newport Water Division Water Supply System Management Plan 2014
In 2009, the NWD developed water demand projections for its service area as a basis of establishing the design
capacities of the two water treatment plants. The projections were based on a 5-year and 20 –year planning horizon.
The Planning Departments for all three communities on Aquidneck Island as well as the Naval Station Newport and
Portsmouth Water & Fire District were contacted. Table 13-3 describes the projected future demands on the NWD.
Table 13-3 - NWD Forecasted Water Demands (Measured in Million Gallons Daily)
Forecasted Year
Average Day Demand (ADD)
Maximum Day Demand (MDD)
2018
7.00-7.44
12.40-13.20
2033
7.50-7.96
13.30-14.10
Source: Newport Water Division Water Supply System Management Plan 2014
Draft Existing Conditions (March 2016)
Page 13-3