Conn Creek Dam, California, USA

Home / USA / California / Conn Creek Dam

Quick Facts About Conn Creek Dam

Location: Napa, California
Coordinates: 38.4821, -122.3737
River: Conn Creek River
Primary Purpose: Water Supply
Type: Earth
Commissioned: 1946
Dam Height: 125 ft (38 m)
Dam Length: 700 ft (213 m)
Dam Capacity: 31,000 acre-ft (38,238 Ml)

Conn Creek Dam Map

Here is a map of Conn Creek Dam with satellite imagery. You can zoom in and out, toggle full screen mode and even enter street view directly from the map.

Conn Creek Dam Information

Conn Creek Dam is an earthen embankment dam located about 7.5 miles from Yountville, Napa, California.

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

The dam was designed by and commissioned in 1946 and is currently owned by City of Napa.

Conn Creek Dam Structure

The Conn Creek Dam is approximately 700 feet (213 m) long, 125 feet (38 m) high and has a structural volume of 500,000 cubic yards (382,278 cubic metres).

Conn Creek Dam Storage Capacity & Surface Area

The reservoir has a normal storage capacity of acre-ft (0 Ml) and maximum capacity of 31,000 acre-ft (38,238 Ml).

The surface area of the reservoir is 790 acres (320 ha) and the total catchment area is 54 square miles (140 square kilometres).

Conn Creek Dam Spillway

According to the latest available data, the Conn Creek Dam does not have any spillways.

Conn Creek Dam Compared to Four Famous American Dams

Conn Creek Dam
Napa, California
Hoover Dam
Clark County, Nevada
Grand Coulee Dam
Okanogan County, Washington
Theodore Roosevelt Dam
Maricopa County, Arizona
Glen Canyon Dam
Coconino County, Arizona
Height (ft) 125 730 550 357 216
Length (Ft) 700 1,244 5,673 6,920 1,565
Storage Volume (acre-ft) 31,000 30,237,000 9,562,000 3,540,000 29,875,000
Drainage Area (sq miles) 54 167,800 74,100 3,611 108,355

Conn Creek Dam Weather

Current Conditions at Conn Creek Dam

Failed to fetch current weather data.

7-Day Forecast for Conn Creek Dam

Failed to fetch weather forecast data.

Conn Creek Dam Frequently Asked Questions

In which state is the Conn Creek Dam?

Conn Creek Dam is in California.

In which county is the Conn Creek Dam?

Conn Creek Dam is in Napa County.

How high is the Conn Creek Dam?

Conn Creek Dam is 125 feet high.

How long is the Conn Creek Dam?

Conn Creek Dam is 700 feet long.

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