Water Supply Plan - City of Miami

Water Facilities Master Plan
Existing Water Supply Facilities
A 3-2
KM2740.Sec3.doc
11/26/2007
3.1.2.2 John E. Preston Wellfield
The seven active wells located in the John E. Preston Wellfield were constructed in
1966 and 1972. Each well is 42 inches in diameter, 107 feet deep and have casing
depths of 66. The capacity of wells No. 1 through No. 6 is 5,000 gallons per minute
(gpm) each and the capacity of well No. 7 is 7,000 gpm. The total wellfield capacity is
53.28 mgd.
Table 3-1: Wellfield Data
Wellfield Data
Wellfield
Hialeah-Preston
Installed Design Capacity
(mgd)
Number of Wells
Preston 53.28 7
Hialeah 12.54 3
Miami Springs 79.30 20
Northwest (a) 149.35 15
Subtotal 294.47 45
Medley Wellfield (b) Alexander Orr
43.20 4
Orr Plant 74.40 10
Snapper Creek 40.00 4
Southwest 161.16 17
West 32.40 3
Subtotal
Existing South Dade
307.96 34
Elevated Tank 4.32 2
Everglades Labor Camp 4.18 3
Leisure City 6.12 4
Naranja 1.15 1
Newton 4.32 2
Subtotal
Proposed South Miami Heights
20.09 12
Caribbean Park 3.00 2
Former Plant 3.00 1
Roberta Hunter Park 10.50 7
Rock Pit Park (Future) N/A 2
Subtotal 16.50 12
MDWASD System Total 639.02 103
(a) Northwest wellfield capacity at 150 mgd when pumps operate at low speed.
(b) Wells in this wellfield had been abandoned. They were recently restored with the
purpose of using them only during an emergency
Source: MDWASD Draft Wellfield Operational Plan, 2007