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Round Valley South Dam Quick Facts

Location: Hunterdon, New Jersey
Coordinates: 40.611233, -74.8455
River: Prescott Brook River
Primary Purpose: Water Supply
Type: Earth Gravity
Commissioned: 1961
Dam Height: 178 ft (54 m)
Dam Length: 1,395 ft (425 m)
Dam Capacity: 196,600 acre-ft (242,502 Ml)
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Round Valley South Dam Map

Round Valley South Dam Information

Round Valley South Dam is an earth gravity dam located in Stanton, Hunterdon, New Jersey.

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

The dam was designed by and commissioned in 1961 and is currently owned by New Jersey Water Supply Authority.

Round Valley South Dam Structure

The Round Valley South Dam is approximately 1,395 feet (425 m) long, 178 feet (54 m) high and has a structural volume of cubic yards (0 cubic metres).

Round Valley South Dam Storage Capacity & Surface Area

The reservoir has a normal storage capacity of 168,000 acre-ft (207,225 Ml) and maximum capacity of 196,600 acre-ft (242,502 Ml).

The surface area of the reservoir is 2,350 acres (951 ha) and the total catchment area is 5 square miles (14 square kilometres).

Round Valley South Dam Spillway

According to the latest available data, the Round Valley South Dam does not have any spillways.

Round Valley South Dam Compared to Five Famous American Dams

Height (ft)
Length (Ft)
Storage Volume (acre-ft)
Drainage Area (sq miles)
 
Round Valley South Dam
Hunterdon, New Jersey
Height (ft)
178
Length (Ft)
1,395
Storage Volume (acre-ft)
196,600
Drainage Area (sq miles)
5
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

Round Valley South Dam Weather

Current Conditions at Round Valley South Dam

Parameter Value
Current Time 21:29
Sunrise 07:13
Sunset 16:32
Temperature (°F) 39
Feels Like (°F) 33
Cloud Coverage (%) 100
Pressure (inHg) 1004
Humidity (%) 92
Wind Speed (mph) 10
Rain (mm) 0

7-Day Forecast for Round Valley South 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 38 62 60 1002 96 20 49 WNW 100 50 heavy intensity rain
Thu 24 37 21 1022 53 19 34 W 80 - scattered clouds
Fri 23 32 20 1039 34 11 25 WNW 0 - clear sky
Sat 21 35 29 1048 29 5 6 E 0 - clear sky
Sun 25 42 32 1043 55 8 15 SE 0 - overcast clouds
Mon 37 47 41 1029 99 6 22 SSE 100 10 moderate rain
Tue 37 54 53 1010 91 18 40 W 100 6 moderate rain
Wed 34 44 34 1027 63 14 31 WNW 0 - scattered clouds

Round Valley South Dam Frequently Asked Questions

In which state is the Round Valley South Dam?

Round Valley South Dam is in New Jersey.

In which county is the Round Valley South Dam?

Round Valley South Dam is in Hunterdon County.

How high is the Round Valley South Dam?

Round Valley South Dam is 178 feet high.

How long is the Round Valley South Dam?

Round Valley South Dam is 1,395 feet long.

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More Dams in Hunterdon County:

Round Valley Dike
Round Valley North Dam
Round Valley P&F Dike
Round Valley South Dam
Spruce Run 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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