Holyoke Dam

Holyoke Dam Quick Facts

Location: Hampshire, Massachusetts
Coordinates: 42.213425, -72.602319
River: Connecticut River
Primary Purpose: Hydroelectric
Type: Masonry Concrete Gravity
Commissioned: 1900
Dam Height: 30 ft (9 m)
Dam Length: 1,770 ft (539 m)
Dam Capacity: 26,000 acre-ft (32,070 Ml)
Hazard Potential: Significant
Condition Assessment: Satisfactory
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Holyoke Dam Map

Holyoke Dam Information

Holyoke Dam is a masonry concrete gravity dam located in Holyoke, Hampshire, Massachusetts.

The dam, which is on the Connecticut River, was primarily built for Hydroelectric purposes, but also serves for Recreation benefits.

The dam was designed by and commissioned in 1900 and is currently owned by City of Holyoke Gas and Electric Department.

Holyoke Dam Structure

The Holyoke Dam is approximately 1,770 feet (539 m) long, 30 feet (9 m) high and has a structural volume of cubic yards (0 cubic metres).

Holyoke Dam Storage Capacity & Surface Area

The reservoir has a normal storage capacity of 26,000 acre-ft (32,070 Ml) and maximum capacity of 26,000 acre-ft (32,070 Ml).

The surface area of the reservoir is 2,290 acres (927 ha) and the total catchment area is 8,309 square miles (21,520 square kilometres).

Holyoke Dam Spillway

The dam has a 1020 feet (311 m) wide controlled spillway with a maximum discharge capacity of 251400 cubic feet per second (7119 cubic metres per second).

Holyoke Dam Compared to Five Famous American Dams

Height (ft)
Length (Ft)
Storage Volume (acre-ft)
Drainage Area (sq miles)
 
Holyoke Dam
Hampshire, Massachusetts
Height (ft)
30
Length (Ft)
1,770
Storage Volume (acre-ft)
26,000
Drainage Area (sq miles)
8,309
Hoover Dam
Clark County, Nevada
Height (ft)
730
Length (Ft)
1,244
Storage Volume (acre-ft)
30,237,000
Drainage Area (sq miles)
167,800
Grand Coulee Dam
Okanogan County, Washington
Height (ft)
550
Length (Ft)
5,673
Storage Volume (acre-ft)
9,562,0000
Drainage Area (sq miles)
74,100
Theodore Roosevelt Dam
Maricopa County, Arizona
Height (ft)
357
Length (Ft)
1,208
Storage Volume (acre-ft)
3,411,500
Drainage Area (sq miles)
5,736
Oroville Dam
Butte County, California
Height (ft)
235
Length (Ft)
6,920
Storage Volume (acre-ft)
3,540,000
Drainage Area (sq miles)
3,611
Glen Canyon Dam
Coconino County, Arizona
Height (ft)
216
Length (Ft)
1,565
Storage Volume (acre-ft)
29,875,000
Drainage Area (sq miles)
108,355

Holyoke Dam Weather

Current Conditions at Holyoke Dam

Parameter Value
Current Time 20:51
Sunrise 07:12
Sunset 16:50
Temperature (°F) 13
Feels Like (°F) 5
Cloud Coverage (%) 75
Pressure (inHg) 1032
Humidity (%) 61
Wind Speed (mph) 5
Rain (mm) 0

7-Day Forecast for Holyoke Dam

Day Min Temp (°F) Max Temp (°F) Feels Like (°F) Pressure (inHg) Humidity (%) Wind Speed (mph) Wind Gust (mph) Wind Dir Precip Prob (%) Precip Volume (mm) Weather
Today 5 19 10 1032 48 6 11 W 0 - scattered clouds
Wed 2 20 19 1033 45 3 6 NNW 0 - clear sky
Thu 8 29 16 1024 60 11 21 SSW 0 - overcast clouds
Fri 11 29 19 1021 48 12 24 WNW 0 - few clouds
Sat 6 30 23 1025 48 7 22 SW 0 - clear sky
Sun 22 36 29 1022 55 10 27 WNW 0 - overcast clouds
Mon 24 39 32 1008 79 11 28 SW 24 - light snow
Tue 11 34 25 1002 66 15 32 WNW 100 - light snow

Holyoke Dam Frequently Asked Questions

In which state is the Holyoke Dam?

Holyoke Dam is in Massachusetts.

In which county is the Holyoke Dam?

Holyoke Dam is in Hampshire County.

How high is the Holyoke Dam?

Holyoke Dam is 30 feet high.

How long is the Holyoke Dam?

Holyoke Dam is 1,770 feet long.

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More Dams in Hampshire County:

Holyoke Dam
Knightville Dam
Quabbin Goodnough Dike
Quabbin Spillway Dam
Quabbin Winsor Dam
Tighe Carmody Reservoir Dam

Condition Assessment Classification

Satisfactory

No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.

Fair

No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum

Poor

A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.

Unsatisfactory

A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.

Not Rated

The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.

Not Available

Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High

Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.

Significant

Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.

Low

Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner’s property.

Undetermined

Dams for which a downstream hazard potential has not been designated or is not provided.

Not Available

Dams for which the downstream hazard potential is restricted to approved government users.

Source: National Inventory of Dams

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