Cobble Mountain Reservoir Dam

Cobble Mountain Reservoir Dam Quick Facts

Location: Hampden, Massachusetts
Coordinates: 42.122035, -72.8916336
River: Little River
Primary Purpose: Water Supply
Type: Earth
Commissioned: 1933
Dam Height: 245 ft (75 m)
Dam Length: 730 ft (223 m)
Dam Capacity: 96,500 acre-ft (119,031 Ml)
Condition Assessment: Satisfactory
Share Cobble Mountain Reservoir Dam:

Cobble Mountain Reservoir Dam Map

Cobble Mountain Reservoir Dam Information

Cobble Mountain Reservoir Dam is an earthen embankment dam located in Hampden County, Massachusetts.

The dam, which is on the Little River, was primarily built for Water Supply purposes, but also serves for benefits.

The dam was designed by and commissioned in 1933 and is currently owned by CITY OF SPRINGFIELD, WATER AND SEWER COMMISSION.

Cobble Mountain Reservoir Dam Structure

The Cobble Mountain Reservoir Dam is approximately 730 feet (223 m) long, 245 feet (75 m) high and has a structural volume of 0 cubic yards (0 cubic metres).

Cobble Mountain Reservoir Dam Storage Capacity & Surface Area

The reservoir has a normal storage capacity of 70,000 acre-ft (86,344 Ml) and maximum capacity of 96,500 acre-ft (119,031 Ml).

The surface area of the reservoir is 1,134 acres (459 ha) and the total catchment area is 45 square miles (116 square kilometres).

Cobble Mountain Reservoir Dam Spillway

According to the latest available data, the Cobble Mountain Reservoir Dam does not have any spillways.

Cobble Mountain Reservoir Dam Compared to Five Famous American Dams

Height (ft)
Length (Ft)
Storage Volume (acre-ft)
Drainage Area (sq miles)
 
Cobble Mountain Reservoir Dam
Hampden, Massachusetts
Height (ft)
245
Length (Ft)
730
Storage Volume (acre-ft)
96,500
Drainage Area (sq miles)
45
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

Cobble Mountain Reservoir Dam Weather

Current Conditions at Cobble Mountain Reservoir Dam

Parameter Value
Current Time 21:48
Sunrise 06:38
Sunset 16:33
Temperature (°F) 34
Feels Like (°F) 24
Cloud Coverage (%) 0
Pressure (inHg) 1027
Humidity (%) 58
Wind Speed (mph) 16
Rain (mm) 0

7-Day Forecast for Cobble Mountain Reservoir 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 34 49 35 1016 51 17 34 NNW 0 - scattered clouds
Wed 25 45 37 1033 29 8 19 NNE 0 - clear sky
Thu 25 43 34 1028 26 7 13 ENE 0 - broken clouds
Fri 31 51 43 1012 29 13 35 NW 0 - overcast clouds
Sat 37 52 41 1009 42 16 42 NW 0 - clear sky
Sun 35 54 48 1016 45 10 30 NW 0 - broken clouds
Mon 42 55 51 1006 65 18 35 WNW 0 - broken clouds
Tue 39 50 39 1013 62 13 36 NW 0 - scattered clouds

Cobble Mountain Reservoir Dam Frequently Asked Questions

In which state is the Cobble Mountain Reservoir Dam?

Cobble Mountain Reservoir Dam is in Massachusetts.

In which county is the Cobble Mountain Reservoir Dam?

Cobble Mountain Reservoir Dam is in Hampden County.

How high is the Cobble Mountain Reservoir Dam?

Cobble Mountain Reservoir Dam is 245 feet high.

How long is the Cobble Mountain Reservoir Dam?

Cobble Mountain Reservoir Dam is 730 feet long.

Share Cobble Mountain Reservoir Dam:

More Dams in Hampden County:

Borden Brook Reservoir Dam
Cherry Valley Dam
Cobble Mountain Reservoir Dam
Conant Brook Dam
Littleville Dam
Ludlow 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

Generated by MPG