Reservoirs:
Tighe-Carmody
The Tighe-Carmody Reservoir, constructed in 1957 and located in the Town of Southampton, Massachusetts, is owned and operated by the Holyoke Water Works. The Reservoir has an impound capacity of 4.825 billion gallons and a safe yield of 13.0 million gallons of water per day. The Reservoir drainage area encompasses 9,234 acres of land located throughout Southampton, Westhampton, Huntington and Montgomery, 54% of which or approximately 4,956 acres is owned by the Holyoke Water Works. The Tighe-Carmody Reservoir dam is an earthen embankment type structure, with a structural height of 130 feet and an approximate length of 2,200 feet. The dam is classified by the Massachusetts Department of Conservation and Recreation (DCR) as a Large size structure and a High (Class I) hazard dam.
McLean
The McLean Reservoir, constructed in 1903 and located in the City of Holyoke,
is owned and operated by the Holyoke Water Works. The Reservoir has an impound capacity of 365 million gallons and a safe yield of 0.5 million gallons of water per day.
The Reservoir drainage area is 319 acres, of which 1,320 acres encompassing both the McLean and Ashley Reservoirs is owned by the Holyoke Water Works. The McLean Reservoir dam is an earth fill dam with a total height of 35 feet and an approximate length of 700 feet. The dam is classified by the Massachusetts Department of Conservation and Recreation (DCR) as a Large size structure and a Significant (Class II) hazard dam.
Ashley
The Ashley Reservoir, constructed in 1897 and located in the City of Holyoke, Massachusetts, is owned and operated by the Holyoke Water Works. The Reservoir has an impound capacity of 795 million gallons and a safe yield of 2.1 million gallons of water per day. The Reservoir drainage area is 1,261 acres, of which 1,320 acres encompassing both the Ashley and McLean Reservoirs is owned by the Holyoke Water Works. The Ashley Reservoir dam is an earthen fill dam with a total height of 12 feet and an approximate length of 640 feet. The dam is classified by the Massachusetts Department of Conservation and Recreation (DCR) as an Intermediate size structure and a Significant (Class II) hazard dam.
Whiting Street
The Whiting Street Reservoir, constructed in 1888 and located in the City of Holyoke, Massachusetts, is owned and operated by the Holyoke Water Works. The Reservoir has an impound capacity of 479 million gallons and a safe yield of 1.5 million gallons of water per day. The Reservoir drainage area is 897 acres, of which 367 acres is owned by the Holyoke Water Works. The Whiting Street Reservoir dam is a stone masonry and earthen embankment dam with a height of 19 feet and an approximate length of 1,900 feet. The dam is classified by the Massachusetts Department of Conservation and Recreation (DCR) as a Large size structure and a High (Class I) hazard dam.
Storage Tanks include:
West Heights storage tanks
The two (2) West Heights storage tanks supply water to the West Heights water system. The steel storage tank, constructed in 1992, has a capacity of 2.0 million gallons. The tank is a ground level type with a diameter of 110 feet and an overflow height of 30 feet. The pre-stressed concrete storage tank, constructed in 1961, has a capacity of 1.22 million gallons. The tank is also a ground level type with a diameter of 100 feet and an overflow height of 20 feet.
West Holyoke storage tank
The West Holyoke storage tank supplies water to the West Holyoke water system formerly referred to as the Pequot and Cornet Homes water systems. The tank, constructed in 1986 of welded steel, has a capacity of 0.5 million gallons. The tank is a ground level type with a diameter of 60 feet and overflow height of 20 feet.
Pumping Stations include:
West Heights Pumping Station
The West Heights Pumping Station supplies water to the West Heights water system from three (3) pumps, each driven by a 150 HP electric motor. Each pump has a rated capacity of 1,150 GPM.
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West Holyoke/McLean Transfer Pumping Station
The West Holyoke/McLean Transfer Pumping Station supplies water to the West Holyoke water system and also transfers water from the McLean Reservoir to the Water Treatment Facility for routine or emergency needs. The West Holyoke Station utilizes three (3) pumps, each driven by a 7.5 HP electric motor. Each pump has a rated capacity of 200 GPM. The McLean Transfer Station utilizes three (3) pumps, each with a 100 HP electric motor. Each pump has a rated capacity of 3,425 GPM.
Reduced West Heights Pumping Station
The Reduced West Heights Pumping Station supplies water to a portion of the West Heights water system at a reduced pressure from two (2) Ross altitude type valves. The station is also capable of pumping water into the West Heights water system by one (1) Worthington diesel motor with a rated pump capacity of 1,000 GPM.
Additional Facilities:
Storage and Maintenance Garages
Ground maintenance operations for all four reservoirs and facilities along with equipment storage are provided from two garages. The primary maintenance garage is located at 45 Upland Road and larger equipment storage garage is located at 1 Rock Cut Road.
Water Treatment Facility
The Water Treatment Facility, located adjacent to the McLean Reservoir off Route 202, has the capacity to treat 14.8 million gallons of water per day. This facility is entirely computer-controlled, utilizing a two-step disinfection process to maintain optimal disinfectant concentration in the distribution system and to minimize the formation of disinfection byproducts. The addition of fluoride is used to reduce tooth decay along with soda ash, sodium bicarbonate and a corrosion inhibitor to stabilize pH and reduce red or “rusty” water. The facility houses a fully equipped laboratory to perform daily monitoring and water quality testing. The facility was also designed to accommodate the addition of filtration with minimal disruption to existing operations, if and when that process becomes necessary.